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                                                                     Exhibit 3.2

                              AMENDED AND RESTATED

                                     BYLAWS

                                       OF

                             OPTICON MEDICAL, INC.

                     (hereinafter called the "Corporation")

                                   ARTICLE I
                                    OFFICES

         Section 1. Registered Office. The registered office of the Corporation
shall be in the City of Wilmington, County of New Castle, State of Delaware.

         Section 2. Other Offices. The Corporation may also have offices at such
other places both within and without the State of Delaware as the Board of
Directors may from time to time determine.

                                   ARTICLE II
                            MEETINGS OF STOCKHOLDERS

         Section 1. Place of Meetings. Meetings of the stockholders for the
election of directors or for any other purpose shall be held at such time and
place, either within or without the State of Delaware, as shall be designated
from time to time by the Board of Directors and stated in the notice of the
meeting or in a duly executed waiver of notice thereof.

         Section 2. Annual Meeting. The annual meetings of stockholders shall be
held on such date and at such time as shall be designated from time to time by
the Board of Directors and stated in the notice of the meeting, at which
meetings the stockholders shall elect by a plurality vote a Board of Directors,
and transact such other business as may properly be brought before the meeting.
Written notice of the annual meeting stating the place, date and hour of the
meeting shall be given to each stockholder entitled to vote at such meeting as
the laws of the State of Delaware shall provide.

         Section 3. Special Meetings. Unless otherwise prescribed by law or by
the Certificate of Incorporation, special meetings of stockholders, for any
purpose or purposes, may be called by either (i) the Chairman, if there be one,
or (ii) the President, (iii) any Vice President, if there be one or (iv) the
Secretary and shall be called by any such officer at the request in writing of a
majority of the Board of Directors or the holders of a majority of the
outstanding voting shares. Such request shall state the purpose or purposes of
the proposed meeting. Written notice of a special meeting stating the place,
date and hour of the meeting and the purpose or purposes for which the meeting
is called shall be given to each stockholder entitled to vote at such meeting as
the laws of the State of Delaware shall provide.


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         Section 4. Quorum. Except as otherwise provided by law or by the
Certificate of Incorporation, the holders of one-third of the common stock
issued and outstanding and entitled to vote, present in person or represented by
proxy, shall constitute a quorum at all meetings of the stockholders for the
transaction of business. If such quorum shall not be present or represented at
any meeting of the stockholders, the stockholders entitled to vote, present in
person or represented by proxy, shall have power to adjourn the meeting from
time to time, without notice other than announcement at the meeting, until a
quorum shall be present or represented. At such adjourned meeting, if a quorum
shall be present or represented, any business may be transacted which might have
been transacted at the meeting as originally noticed. If the adjournment is for
more than 30 days, or if after the adjournment a new record date is fixed for
the adjourned meeting, a notice of the adjourned meeting shall be given to each
stockholder entitled to vote at the meeting.

         Section 5. Voting. Unless otherwise required by law, the Certificate of
Incorporation or these Bylaws, any question brought before any meeting of
stockholders shall be decided by the vote of the holders of a majority of the
stock represented and entitled to vote. Each stockholder represented at a
meeting of stockholders shall be entitled to cast one vote for each share of the
common stock entitled to vote held by such stockholder. Such votes may be cast
in person or by proxy but no proxy shall be voted on or after three years from
its date, unless such proxy provides for a longer period. The Board of
Directors, in its discretion, or the officer of the Corporation presiding at a
meeting of stockholders, in his discretion, may require that any votes cast at
such meeting shall be cast by written ballot.

         Section 6. Stock Ledger. The stock ledger of the Corporation shall be
the only evidence as to the stockholders who are entitled to examine the stock
ledger, any list required by the General Corporation Law of the State of
Delaware or the books of the Corporation, or to vote in person or by proxy at
any meeting of stockholders.

         Section 7. Action by Consent of all Stockholders. Any action required
to be taken at any annual or special meeting of the stockholders may be taken
without a meeting, without prior notice and without a vote, if a consent in
writing setting forth the action so taken shall be signed by the holders of
outstanding stock having not less than the minimum number of votes that would be
necessary to authorize or take such action at a meeting at which all shares
entitled to vote thereon were present and voted. Such written consent or
consents shall be filed with the minutes of the Corporation. Prompt notice of
the taking of corporate action without a meeting by less than unanimous written
consent shall be given to those stockholders who have not consented in writing.

                                  ARTICLE III
                                   DIRECTORS

         Section 1. Number and Class of Directors. The number of directors of
the Corporation shall be five (5), and thereafter as shall be as provided from
time to time in the by-laws, provided that no amendment to the by-laws
decreasing the number of directors shall have the effect of shortening the term
of any incumbent director, and provided further than no action shall be taken



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by the directors (whether through amendment of the by-laws or otherwise) to
increase the number of directors as provided in the by-laws from time to time
unless at least eighty percent (80%) of the directors then in office shall
concur in said action. Directors need not be stockholders.

         The board of directors shall be divided into three classes, designated
Class I, Class II and Class III, as nearly equal in number as possible, and the
term of office of directors in one class shall expire at each annual meeting of
stockholders, and in all cases as to each director until a successor shall be
elected and shall qualify, or until his earlier resignation, removal from
office, death or incapacity. Additional directorships resulting from an increase
in number of directors shall be apportioned among the classes as equally as
possible. The initial term of office of directors of Class I shall expire at the
annual meeting of stockholders in 2001, that of Class II shall expire at the
annual meeting of stockholders in 2002, and that of Class III shall expire at
the annual meeting of stockholders in 2003, and in all cases as to each director
until a successor shall be elected and shall qualify, or until his earlier
resignation, removal from office, death or incapacity. At each annual meeting of
stockholders, the number of directors equal to the number of directors of the
class whose term expires at the time of such meeting (or, if less, the number of
directors properly nominated and qualified for election) shall be elected to
hold office until the third succeeding annual meeting of stockholders after
their election.

         Section 2. Removal of Directors. Any Director may be removed, with or
without cause, by a majority vote of the stockholders entitled to vote. The
action for removal can be taken at an annual meeting, special meeting called for
that purpose, or by a consent action.

         Section 3. Vacancies. Vacancies and newly created directorships
resulting from any increase in the authorized number of directors may be filled
by a majority of the directors then in office, though less than a quorum, or by
a sole remaining director.

         Section 4. Duties and Powers. The business of the Corporation shall be
managed by or under the direction of the Board of Directors which may exercise
all such powers of the Corporation and do all such lawful acts and things as are
not by statute or by the Certificate of Incorporation or by these Bylaws
directed or required to be exercised or done by the stockholders.

         Section 5. Meetings. The Board of Directors of the Corporation may hold
meetings, both regular and special, either within or without the State of
Delaware. Regular meetings of the Board of Directors may be held without notice
at such time and at such place as may from time to time be fixed by the Board of
Directors. Special meetings of the Board of Directors may be called by the
Chairman, if there be one, the President, or any two directors. Notice thereof
stating the place, date and hour of the meeting shall be given to each director
either by mail not less than 48 hours before the date of the meeting, by
telephone or telegram on 24 hours notice, or on such shorter notice as the
person or persons calling such meeting may deem necessary or appropriate in the
circumstances.

         Section 6. Quorum. Except as may be otherwise specifically provided by
law, the Certificate of Incorporation or these Bylaws, at all meetings of the
Board of Directors, a majority



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of the entire Board of Directors shall constitute a quorum for the transaction
of business and the act of a majority of the directors present at any meeting at
which there is a quorum shall be the act of the Board of Directors. If a quorum
shall not be present at any meeting of the Board of Directors, the directors
present may adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present.

         Section 7. Actions of Board. Unless otherwise provided by the
Certificate of Incorporation or these Bylaws, any action required or permitted
to be taken at any meeting of the Board of Directors or of any committee thereof
may be taken without a meeting, if all the members of the Board of Directors or
committee, as the case may be, consent thereto in writing, and the writing or
writings are filed with the minutes of proceedings of the Board of Directors or
committee.

         Section 8. Meetings by Means of Conference Telephone. Unless otherwise
provided by the Certificate of Incorporation or these Bylaws, members of the
Board of Directors of the Corporation, or any committee designated by the Board
of Directors, may participate in a meeting of the Board of Directors or such
committee by means of a conference telephone or similar communications equipment
by means of which all persons participating in the meeting can hear each other,
and participation in a meeting pursuant to this Section 7 shall constitute
presence in person at such meeting.

         Section 9. Committees. The Board of Directors may, by resolution passed
by a majority of the entire Board of Directors, designate one or more
committees, each committee to consist of one or more of the directors of the
Corporation. The Board of Directors may designate one or more directors as
alternate members of any committee who may replace any absent or disqualified
member at any meeting of any such committee. In the absence or disqualification
of a member of a committee, and in the absence of a designation by the Board of
Directors of an alternate member to replace the absent or disqualified member,
the member or members thereof present at any meeting and not disqualified from
voting, whether or not he or they constitute a quorum, may unanimously appoint
another member of the Board of Directors to act at the meeting in the place of
any absent or disqualified member. Any committee, to the extent allowed by law
and provided in the resolution establishing such committee, shall have and may
exercise all the powers and authority of the Board of Directors in the
management of the business and affairs of the Corporation; but no such committee
shall have the power or authority to amend the certificate of incorporation,
adopt an agreement of merger or consolidation, recommend to the stockholders the
sale, lease or exchange of all or substantially all of the corporation's
property and assets, recommend to the stockholders a dissolution of the
corporation or a revocation of a dissolution, amend the bylaws of the
corporation, declare a dividend, or issue stock. Each committee shall keep
regular minutes and report to the Board of Directors when required.



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         Section 10. Compensation. The directors may be paid their expenses, if
any, of attendance at each meeting of the Board of Directors and may be paid a
fixed sum for attendance at each meeting of the Board of Directors or a stated
salary as director. No such payment shall preclude any director from serving the
Corporation in any other capacity and receiving compensation therefor. Members
of special or standing committees may be allowed like compensation for attending
committee meetings.

         Section 11. Interested Directors. No contract or transaction between
the Corporation and one or more of its directors or officers, or between the
Corporation and any other corporation, partnership, association or other
organization in which one or more of its directors or officers are directors or
officers, or have a financial interest, shall be void or voidable solely for
this reason, or solely because the director or officer is present at or
participates in the meeting of the Board of Directors or committee thereof which
authorizes the contract or transaction, or solely because his or their votes are
counted for such purpose if (i) the material facts as to his or their
relationship or interest and as to the contract or transaction are disclosed or
are known to the Board of Directors or the committee, and the Board of Directors
or committee in good faith authorizes the contract or transaction by the
affirmative votes of a majority of the disinterested directors, even though the
disinterested directors be less than a quorum; or (ii) the material facts as to
his or their relationship or interest and as to the contract or transaction are
disclosed or are known to the stockholders entitled to vote thereon, and the
contract or transaction is specifically approved in good faith by vote of the
stockholders; or (iii) the contract or transaction is fair as to the Corporation
as of the time it is authorized, approved or ratified, by the Board of
Directors, a committee thereof or the stockholders. Common or interested
directors may be counted in determining the presence of a quorum at a meeting of
the Board of Directors or of a committee which authorizes the contract or
transaction.


                                   ARTICLE IV
                                    OFFICERS

         Section 1. General. The officers of the Corporation shall be chosen by
the Board of Directors and shall be a President, a Secretary and a Treasurer.
The Board of Directors, in its discretion, may also choose a Chairman of the
Board of Directors (who must be a director) and one or more Vice Presidents,
Assistant Secretaries, Assistant Treasurers and other officers. Any number of
offices may be held by the same person, unless otherwise prohibited by law, the
Certificate of Incorporation or these Bylaws. The officers of the Corporation
need not be stockholders of the Corporation nor, except in the case of the
Chairman of the Board of Directors, need such officers be directors of the
Corporation.



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         Section 2. Election. The Board of Directors at its first meeting held
after each annual meeting of stockholders shall elect the officers of the
Corporation who shall hold their offices for such terms and shall exercise such
powers and perform such duties as shall be determined from time to time by the
Board of Directors; and all officers of the Corporation shall hold office until
their successors are chosen and qualified, or until their earlier resignation or
removal. Any officer elected by the Board of Directors may be removed, with or
without cause, at any time by the affirmative vote of a majority of the Board of
Directors. Any vacancy occurring in any office of the Corporation shall be
filled by the Board of Directors. The salaries of all officers of the
Corporation shall be fixed by the Board of Directors.

         Section 3. Voting Securities Owned by the Corporation. Powers of
attorney, proxies, waivers of notice of meeting, consents and other instruments
relating to securities owned by the Corporation may be executed in the name of
and on behalf of the Corporation by the President or any Vice President and any
such officer may, in the name of and on behalf of the Corporation, take all such
action as any such officer may deem advisable to vote in person or by proxy at
any meeting of security holders of any corporation in which the Corporation may
own securities and at any such meeting shall possess and may exercise any and
all rights and powers incident to the ownership of such securities and which, as
the owner thereof, the Corporation might have exercised and possessed if
present. The Board of Directors may, by resolution, from time to time confer
like powers upon any other person or persons.

         Section 4. Chairman of the Board of Directors. The Chairman of the
Board of Directors, if there be one, shall preside at all meetings of the
stockholders and of the Board of Directors. He shall be the Chief Executive
Officer of the Corporation, and except where by law the signature of the
President is required, the Chairman of the Board of Directors shall possess the
same power as the President to sign all contracts, certificates and other
instruments of the Corporation which may be authorized by the Board of
Directors. During the absence or disability of the President, the Chairman of
the Board of Directors shall exercise all the powers and discharge all the
duties of the President. The Chairman of the Board of Directors shall also
perform such other duties and may exercise such other powers as from time to
time may be assigned to him by these Bylaws or by the Board of Directors.

         Section 5. President. The President shall have, subject to the control
of the Board of Directors and, if there be one, the Chairman of the Board of
Directors, general supervision of the business of the Corporation and shall see
that all orders and resolutions of the Board of Directors are carried into
effect. He shall execute all bonds, mortgages, contracts and other instruments
of the Corporation requiring a seal, under the seal of the Corporation, except
where required or permitted by law to be otherwise signed and executed and
except that the other officers of the Corporation may sign and execute documents
when so authorized by these Bylaws, the Board of Directors or the President. In
the absence or disability of the Chairman of the Board of Directors, or if there
be none, the President shall preside at all meetings of the stockholders and the
Board of Directors. If there be no Chairman of the Board of Directors, the
President shall be the Chief Executive Officer of the Corporation. The President
shall also perform such other duties and may exercise such other powers as from
time to time may be assigned to him by these Bylaws or by the Board of
Directors.



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         Section 6. Vice Presidents. At the request of the President or in his
absence or in the event of his inability or refusal to act (and if there be no
Chairman of the Board of Directors), the Vice President or the Vice Presidents
if there is more than one (in the order designated by the Board of Directors)
shall perform the duties of the President, and when so acting, shall have all
the powers of and be subject to all the restrictions upon the President. Each
Vice President shall perform such other duties and have such other powers as the
Board of Directors from time to time may prescribe. If there be no Chairman of
the Board of Directors and no Vice President, the Board of Directors shall
designate the officer of the Corporation who, in the absence of the President or
in the event of the inability or refusal of the President to act, shall perform
the duties of the President, and when so acting, shall have all the powers of
and be subject to all the restrictions upon the President.

         Section 7. Secretary. The Secretary shall attend all meetings of the
Board of Directors and all meetings of stockholders and records of all the
proceedings shall be properly kept or filed, as the case may be.

         Section 8. Treasurer. The Treasurer shall have the custody of the
corporate funds and securities and shall keep full and accurate accounts of
receipts and disbursements in books belonging to the Corporation and shall
deposit all moneys and other valuable effects in the name and to the credit of
the Corporation in such depositories as may be designated by the Board of
Directors. The Treasurer shall disburse the funds of the Corporation as may be
ordered by the Board of Directors, taking proper vouchers for such
disbursements, and shall render to the President and the Board of Directors, at
its regular meetings, or when the Board of Directors so requires, an account of
all his transactions as Treasurer and of the financial condition of the
Corporation. If required by the Board of Directors, the Treasurer shall give the
Corporation a bond in such sum and with such surety or sureties as shall be
satisfactory to the Board of Directors for the faithful performance of the
duties of his office and for the restoration to the Corporation, in case of his
death, resignation, retirement or removal from office, of all books, papers,
vouchers, money and other property of whatever kind in his possession or under
his control belonging to the Corporation.

         Section 9. Assistant Secretaries. Except as may be otherwise provided
in these Bylaws, Assistant Secretaries, if there be any, shall perform such
duties and have such powers as from time to time may be assigned to them by the
Board of Directors, the President, any Vice President, if there be one, or the
Secretary, and in the absence of the Secretary or in the event of his disability
or refusal to act, shall perform the duties of the Secretary, and when so
acting, shall have all the powers of and be subject to all the restrictions upon
the Secretary.

         Section 10. Assistant Treasurers. Assistant Treasurers, if there be
any, shall perform such duties and have such powers as from time to time may be
assigned to them by the Board of Directors, the President, any Vice President,
if there be one, or the Treasurer, and in the absence of the Treasurer or in the
event of his disability or refusal to act, shall perform the duties of the
Treasurer, and when so acting, shall have all the powers of and be subject to
all the restrictions upon the Treasurer. If required by the Board of Directors,
an Assistant Treasurer shall give the Corporation a bond in such sum and with
such surety or sureties as shall be satisfactory to the Board of Directors for
the faithful performance of the duties of his office and for the restoration



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to the Corporation, in case of his death, resignation, retirement or removal
from office, of all books, papers, vouchers, money and other property of
whatever kind in his possession or under his control belonging to the
Corporation.

         Section 11. Other Officers. Such other officers as the Board of
Directors may choose shall perform such duties and have such powers as from time
to time may be assigned to them by the Board of Directors. The Board of
Directors may delegate to any other officer of the Corporation the power to
choose such other officers and to prescribe their respective duties and powers.

                                   ARTICLE V
                                     STOCK

         Section 1. Form of Certificates. Every holder of stock in the
Corporation shall be entitled to have a certificate signed, in the name of the
Corporation (i) by the Chairman of the Board of Directors, the President or a
Vice President and (ii) by the Treasurer or an Assistant Treasurer, or the
Secretary or an Assistant Secretary of the Corporation, certifying the number of
shares owned by him in the Corporation.

         Section 2. Signatures. Where a certificate is counter-signed by (i) a
transfer agent other than the Corporation or its employee, or (ii) a registrar
other than the Corporation or its employee, any other signature on the
certificate may be a facsimile. In case any officer, transfer agent or registrar
who has signed or whose facsimile signature has been placed upon a certificate
shall have ceased to be such officer, transfer agent or registrar before such
certificate is issued, it may be issued by the Corporation with the same effect
as if he were such officer, transfer agent or registrar at the date of issue.

         Section 3. Lost Certificates. The Board of Directors may direct a new
certificate to be issued in place of any certificate theretofore issued by the
Corporation alleged to have been lost, stolen or destroyed, upon the making of
an affidavit of that fact by the person claiming the certificate of stock to be
lost, stolen or destroyed. When authorizing such issue of a new certificate, the
Board of Directors may, in its discretion and as a condition precedent to the
issuance thereof, require the owner of such lost, stolen or destroyed
certificate, or his legal representative, to advertise the same in such manner
as the Board of Directors shall require and/or to give the Corporation a bond in
such sum as it may direct as indemnity against any claim that may be made
against the Corporation with respect to the certificate alleged to have been
lost, stolen or destroyed.

         Section 4. Transfers. Stock of the Corporation shall be transferable in
the manner prescribed by law and in these Bylaws. Transfers of stock shall be
made on the books of the Corporation only by the person named in the certificate
or by his attorney lawfully constituted in writing and upon the surrender of the
certificate therefor, which shall be cancelled before a new certificate shall be
issued.

         Section 5. Record Date. In order that the Corporation may determine the
stockholders entitled to notice of or to vote at any meeting of stockholders or
any adjournment thereof, or



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entitled to express consent to corporate action in writing without a meeting, or
entitled to receive payment of any dividend or other distribution or allotment
of any rights, or entitled to exercise any rights in respect of any change,
conversion or exchange of stock, or for the purpose of any other lawful action,
the Board of Directors may fix, in advance, a record date, which shall not be
more than 60 days nor less than 10 days before the date of such meeting, nor
more than 60 days prior to any other action. A determination of stockholders of
record entitled to notice of or to vote at a meeting of stockholders shall apply
to any adjournment of the meeting; provided, however, that the Board of
Directors fix a new record date for the adjourned meeting.

         Section 6. Beneficial Owners. The Corporation shall be entitled to
recognize the exclusive right of a person registered on its books as the owner
of shares to receive dividends, and to vote as such owner, and to hold liable
for calls and assessments a person registered on its books as the owner of
shares, and shall not be bound to recognize any equitable or other claim to or
interest in such share or shares on the part of any other person, whether or not
it shall have express or other notice thereof, except as otherwise provided by
law.

                                   ARTICLE VI
                                    NOTICES

         Section 1. Notices. Whenever written notice is required by law, the
Certificate of Incorporation or these Bylaws, to be given to any director,
member of a committee or stockholder, such notice may be given by mail,
addressed to such director, member of a committee or stockholder, at his address
as it appears on the records of the Corporation, with postage thereon prepaid,
and such notice shall be deemed to be given at the time when the same shall be
deposited in the United States mail. Written notice may also be given personally
or by facsimile, telegram, telex or cable.

         Section 2. Waivers of Notice. Whenever any notice is required by law,
the Certificate of Incorporation or these Bylaws, to be given to any director,
member of a committee or stockholder, a waiver thereof in writing, signed, by
the person or persons entitled to said notice, whether before or after the time
stated therein, shall be deemed equivalent thereto.

                                  ARTICLE VII
                               GENERAL PROVISIONS

         Section 1. Dividends. Dividends upon the common stock of the
Corporation, subject to the provisions of the Certificate of Incorporation, if
any, may be declared by the Board of Directors at any regular or special
meeting, and may be paid in cash, in property or in shares of the common stock.
Before payment of any dividend, there may be set aside out of any funds of the
Corporation available for dividends such sum or sums as the Board of Directors
from time to time, in its absolute discretion, deems proper as a reserve or
reserves to meet contingencies, or for equalizing dividends, or for repairing or
maintaining any property of the Corporation, or for any proper purpose, and the
Board of Directors may modify or abolish any such reserve.



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         Section 2. Disbursements. All checks or demands for money and notes of
the Corporation shall be signed by such officer or officers or such other person
or persons as the Board of Directors may from time to time designate.

         Section 3. Fiscal Year. The fiscal year of the Corporation shall be
fixed by resolution of the Board of Directors.

         Section 4. Corporate Seal. The corporate seal shall have inscribed
thereon the name of the Corporation, the year of its organization and the words
"Corporate Seal, Delaware." The seal may be used by causing it or a facsimile
thereof to be impressed or affixed or reproduced or otherwise.

                                  ARTICLE VIII
                                INDEMNIFICATION

         The Corporation shall indemnify any director, officer, employee or
agent of the Corporation or any person serving at the request of the Corporation
as a director, officer, employee or agent of another corporation, partnership,
joint venture, trust or other enterprise to the fullest extent permitted by the
Delaware General Corporation Law and provided for in the Certificate of
Incorporation.

                                   ARTICLE IX
                                   AMENDMENTS

         Section 1. Amendments. These Bylaws may be altered, amended or
repealed, in whole or in part, or new bylaws may be adopted by the stockholders
or by the Board of Directors, provided, however, that notice of such alteration,
amendment, repeal or adoption of new bylaws be contained in the notice of such
meeting of stockholders or Board of Directors as the case may be. All such
amendments must be approved by either the holders of a majority of the
outstanding common stock entitled to vote or by a majority of the entire Board
of Directors then in office.

         Section 2. Entire Board of Directors. As used in this Article IX and in
these Bylaws generally, the term "entire Board of Directors" means the total
number of directors which the Corporation would have if there were no vacancies.

                                   ARTICLE X
                                    ADOPTION

         These Amended and Restated Bylaws were adopted by the sole stockholder
of the Corporation on June 26, 2000.





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