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                                                                  EXHIBIT 10.3.3

                            SECOND AMENDMENT TO THE
                        VNUS MEDICAL TECHNOLOGIES, INC.
                                1995 STOCK PLAN

                    This Second Amendment to the VNUS Medical Technologies, Inc.
1995 Stock Plan (the "First Amendment") is adopted as of March 18, 1999 by the
Board of Directors (the "Board") of VNUS Medical Technologies, Inc., a Delaware
corporation (the "Company").

                                    RECITALS

             WHEREAS, the Company wishes to increase the maximum aggregate
number of shares of common stock which may be issued upon exercise of options
under the VNUS Medical Technologies, Inc. 1995 Stock Plan, as amended by that
certain First Amendment to the VNUS Medical Technologies, Inc. 1995 Stock Plan
(as amended, the "Plan"); and

             WHEREAS, pursuant to Section 14 of the Plan, the Board may amend
the Plan from time to time;

             NOW THEREFORE, BE IT RESOLVED, that the Plan be amended as follows,
effective as of March 18, 1999:

             1. Stock Subject to the Plan. The first paragraph of Section 3 of
the Plan is hereby amended in its entirety to read as follows:

             "3. Stock Subject to the Plan. Subject to the provisions of Section
        12 of the Plan, the maximum aggregate number of Shares that may be
        optioned and sold under the Plan is 3,600,000 shares of Common Stock.
        The Shares may be authorized, but unissued, or reacquired Common Stock."

             2. This Second Amendment shall be and hereby is incorporated in and
forms a part of the Plan.

             3. Except as hereby amended, the Plan remains in full force and
effect.

             4. Capitalized terms used herein and not otherwise defined shall
have the meaning ascribed to them in the Plan.

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                                                                    EXHIBIT 10.9

                        CHARTER FOR THE AUDIT COMMITTEE
                           OF THE BOARD OF DIRECTORS
                       OF VNUS MEDICAL TECHNOLOGIES, INC.

                             PURPOSE AND OBJECTIVES

     The Audit Committee is a committee of the Board of Directors (the "Board")
which will make such examinations as are necessary to monitor the corporate
financial reporting and the internal and external audits of VNUS Medical
Technologies, Inc., a Delaware corporation (the "Company"), and to provide to
the Board the results of its examinations and recommendations derived therefrom,
to outline to the Board improvements made, or to be made, in internal accounting
controls, to nominate independent auditors, and to provide to the Board such
additional information and materials as it may deem necessary to assist the
Board in fulfilling its fiduciary responsibilities and making the Board aware of
significant financial matters that require Board attention.

The objectives of the Audit Committee are as follows:

     o    to help directors discharge their fiduciary responsibilities regarding
          the financial condition of the Company;

     o    to provide communication between directors and external auditors;

     o    to ensure the external auditors' independence; and

     o    to maintain the credibility and objectivity of financial reports.

     In addition, the Audit Committee will undertake those specific duties and
responsibilities listed below and such other duties as the Board from time to
time prescribes.

                                  CONSTITUTION

     The Audit Committee of the Board shall be comprised of such number of
members as is determined from time to time by the Board; provided, however, that
the committee shall at all times consist of at least three members. All members
of the Audit Committee shall be independent directors of the Company.

     The members of the Audit Committee will be selected from the members of the
Board who are not employees of the Company. The Board shall provide for
alternate Audit Committee members who shall be entitled to attend committee
meetings in the absence of the members of the Audit Committee.

     Members of the Audit Committee shall be able to read and understand
fundamental financial statements, including a company's balance sheet, income
statement and cash flow statement (or shall be able to do so within a reasonable
time after appointment to the Audit Committee).

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     At least one member of the Audit Committee must have past employment
experience in finance or accounting, requisite professional certification in
accounting, or any other comparable experience or background which results in
the individual's financial sophistication.

     A quorum of the Audit Committee shall be a majority of the members of the
Audit Committee.

     The members of the Audit Committee shall choose a Chairman.

     The Audit Committee shall meet at least two (2) times per year or more
frequently as circumstances require. The Audit Committee may ask members of
management or others to attend the meeting and provide pertinent information as
necessary.

     The Audit Committee will meet separately with the Chief Executive Officer
and the Chief Financial Officer of the Company at least annually to review the
financial affairs of the Company. The Audit Committee will meet with the
external auditors of the Company, at such times as it deems appropriate, to
review the external auditor's examination and management report.

     The external auditors shall be ultimately accountable to the Audit
Committee and the Board.

                                RESPONSIBILITIES

     In meeting their responsibilities, the Audit Committee should address each
of the following matters:

     EXTERNAL AUDITORS

     1.   Together with the Board, select, evaluate, and where appropriate,
          replace the external auditor (or nominate the external auditor to be
          proposed for shareholder approval in any proxy).

     2.   Approve the compensation for external auditors, as negotiated by
          management.

     3.   Notify the external auditor that the external auditor's ultimate
          accountability is to the Audit Committee and the Board.

     4.   Confirm and ensure the independence of the external auditor.

          (a)  Obtain from the external auditors a formal written statement
               delineating all relationships between the auditor and the
               Company, consistent with Independence Standards Board Standard
               No. 1.

          (b)  Actively engage in a dialogue with the external auditor with
               respect to any disclosed relationships or services that may
               impact the objectivity and independence of the auditor.

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          (c)  Take, or recommend that the full Board take, appropriate action
               to oversee the independence of the outside auditor.

     5.   Consider the external auditors' audit scope and plan.

     6.   Consider with management and the external auditors the rationale for
          employing audit firms other than the principal external auditors on
          financial accounting and reporting issues.

     7.   Review with the external auditors the coordination of audit effort to
          assure completeness of coverages, reduction of redundant efforts and
          the effective use of audit resources.

     8.   Review with the external auditors any impact on the financial
          statements of any new or proposed changes in accounting principles or
          regulatory requirements.

     9.   Consider and review with the external auditors:

          (a)  The adequacy of the company's internal controls including
               computerized information system controls and security.

          (b)  Any related significant findings and recommendations of the
               external auditors together with management's responses thereto.

     10.  Meet with the external auditors in executive sessions to discuss any
          matters that the committee members or the external auditors believe
          should be discussed privately with the Audit Committee.

     11.  Determine the need for and arrange to conduct the scope and findings
          of any such audit, and discuss the audit with members of management,
          if necessary.

     FINANCIAL REPORTING

     1.   Review with management and the external auditors at the completion of
          the annual examination:

          (a)  The Company's annual financial statements and related footnotes.

          (b)  The external auditors' audit of the financial statements and
               their report thereon.

          (c)  Any significant changes required in executing the external
               auditor's audit plan.

          (d)  Any serious difficulties or disputes with management encountered
               during the course of the audit.

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          (e)  Other matters related to the conduct of the audit which are to be
               communicated to the committee under generally accepted auditing
               standards.

          (f)  Nature of management advisory services (including fees) provided
               by the independent public accountant during the year under audit.

     2.   Review with management and the external auditors any public interim
          financial reporting.

     3.   Review filings with SEC or other regulatory bodies which contain the
          Company's financial statements and consider whether the information
          contained in these documents is consistent with the information
          contained in the financial statements.

     GENERAL RESPONSIBILITIES

     1.   Review, assess, and if necessary, update the Audit Committee's charter
          annually.

     2.   Review and make recommendations to the Board regarding approval of any
          conflicts of interest between management and the Company.

     3.   Inquire of management and the external auditors about the significant
          risks or exposures and assess the steps management has taken to
          minimize such risk to the Company.

     4.   Review policies and procedures with respect to the senior officers'
          expense accounts.

     5.   Review legal and regulatory matters that may have a material impact on
          the financial statements.

     6.   Meet with management in executive session to discuss any matters that
          the committee members or management believes should be discussed
          privately with the Audit Committee.

     7.   Report committee actions to the Board with such recommendations as the
          committee may deem appropriate.

     8.   The Audit Committee shall have the power to conduct or authorize
          investigations into any matter within the Audit Committee's scope of
          responsibilities. The Audit Committee shall be empowered to retain
          independent counsel, accountants, or others to assist it in the
          conduct of any investigation.

     9.   The Audit Committee will perform such other functions as assigned by
          law, the Company's charter or bylaws, or the Board.

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     In addition to the above responsibilities, the Audit Committee will
undertake such other duties as the Board delegates to it, and will report, at
least annually, to the Board regarding the Committee's examinations and
recommendations.

                                     REPORTS

     1.   The Audit Committee will report its summaries of recommendations to
          the Board which will be incorporated as a part of the minutes of the
          Board meeting at which those recommendations are presented.

     2.   The Audit Committee will prepare an annual "Audit Committee Report"
          for inclusion in the company's annual meeting proxy statement, stating
          the following:

          (a)  Whether the Audit Committee has reviewed and assessed the audited
               financial statements with management.

          (b)  Whether the Audit Committee has discussed with the external
               auditors the matters required to be discussed by SAS 61.

          (c)  Whether the Audit Committee has received written disclosures from
               the independent auditors required by Independence Standards Board
               Standard No. 1, and has discussed with the auditors the auditors'
               independence.

          (d)  Whether, based on its discussions with management and the
               auditors, the Audit Committee recommended to the Board that the
               financial statements be included in the Annual Report on Form
               10-K.

                                     MINUTES

     The Audit Committee will maintain written minutes of its meetings, which
minutes will be filed with the minutes of the meetings of the Board.

                                      OTHER

     In the exercise of its oversight responsibilities, it is not the duty of
the Audit Committee to plan or conduct audits or to determine that the Company's
financial statements fairly present the Company's financial position and results
of operation and are in accordance with generally accepted accounting
principles. Instead, such duties remain the responsibility of management and the
outside auditor. Nothing contained in this charter is intended to alter or
impair the operation of the "business judgment rule" as interpreted by the
courts under the Delaware General Corporation Law. Further, nothing contained in
this charger is intended to alter or impair the right of the members of the
Audit Committee under the Delaware General Corporation Law to rely, in
discharging their responsibilities, on the records of the Company and on other
information presented to the Audit Committee, Board or Company by its officers
or employees or by outside experts such as the outside auditory.

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