**Exhibit 31.2**

**LASERSIGHT INCORPORATED**

**Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934**

| I, Zhaokai Tang, the principal financial officer of   LaserSight Incorporated, certify that:                                                                                                                                                                                                                                                                              |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                                                                                                                                                                                                                                                                                                                                                                      |   |
| 1.   I have reviewed this quarterly report on Form   10-QSB of LaserSight Incorporated;                                                                                                                                                                                                                                                                         |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
| 2.   Based on my knowledge, this report does not   contain any untrue statement of a material fact or omit to state a material   fact necessary to make the statements made, in light of the circumstances   under which such statements were made, not misleading with respect to the   period covered by this report;                                         |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
| 3.   Based on my knowledge, the financial statements,   and other financial information included in this report, fairly present in all   material respects the financial condition, results of operations and cash   flows of the small business issuer as of, and for, the periods presented in   this report;                                                 |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
| 4.   The small business issuer’s other certifying   officer(s) and I are responsible for establishing and maintaining disclosure   controls and procedures (as defined in Exchange Act Rules 13a-15(e) and   15d-15(e)) for the small business issuer and have:                                                                                            |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
|                                                                                                                                                                                                                                                                                                                                                                      |           a)     Designed such disclosure controls and procedures, or caused such disclosure   controls and procedures to be designed under our supervision, to ensure that   material information relating to the small business issuer, including its   consolidated subsidiaries, is made known to us by others within those   entities, particularly during the period in which this report is being   prepared; |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
|                                                                                                                                                                                                                                                                                                                                                                      |           b)     Evaluated the effectiveness of the small business issuer’s disclosure   controls and procedures and presented in this report our conclusions about   the effectiveness of the disclosure controls and procedures, as of the end of   the period covered by this report based on such evaluation; and |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
|                                                                                                                                                                                                                                                                                                                                                                      |           c)     Disclosed in this report any change in the small business issuer’s internal   control over financial reporting that occurred during the small business   issuer’s most recent fiscal quarter (the small business issuer’s fourth   fiscal quarter in the case of an annual report) that has materially affected,   or is reasonably likely to materially affect, the small business issuer’s   internal control over financial reporting; and |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
| 5.   The small business issuer’s other certifying   officer(s) and I have disclosed, based on our most recent evaluation of   internal control over financial reporting, to the small business issuer’s   auditors and the audit committee of the small business issuer’s board of   directors (or persons performing the equivalent functions): |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
|                                                                                                                                                                                                                                                                                                                                                                      |           a)     All significant deficiencies and material weaknesses in the design or   operation of internal control over financial reporting which are reasonably   likely to adversely affect the small business issuer’s ability to record,   process, summarize and report financial information; and |
|                                                                                                                                                                                                                                                                                                                                                                      |   |
|                                                                                                                                                                                                                                                                                                                                                                      |           b)     Any fraud, whether or not material, that involves management or other   employees who have a significant role in the small business issuer’s internal   control over financial reporting. |