<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
VISION-SCIENCES, INC. FORM 10-Q FOR THE THREE MONTHS ENDED
SEPTEMBER 30, 1999.
</LEGEND>

<S>                             <C>                     <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          MAR-31-2000             MAR-31-1999             MAR-31-2000             MAR-31-1999
<PERIOD-START>                             JUL-01-1999             JUL-01-1998             APR-01-1999             APR-01-1998
<PERIOD-END>                               SEP-30-1999             SEP-30-1998             SEP-30-1999             SEP-30-1998
<CASH>                                       1,918,739               2,224,863<F3>                   0                       0
<SECURITIES>                                   264,550                 970,608<F3>                   0                       0
<RECEIVABLES>                                1,284,491               1,219,371<F3>                   0                       0
<ALLOWANCES>                                   135,000                 130,000<F3>                   0                       0
<INVENTORY>                                    787,286                 633,571<F3>                   0                       0
<CURRENT-ASSETS>                             4,213,646               5,017,105<F3>                   0                       0
<PP&E>                                       3,345,361               3,244,587<F3>                   0                       0
<DEPRECIATION>                               2,776,068               2,561,713<F3>                   0                       0
<TOTAL-ASSETS>                               5,926,793               7,882,336<F3>                   0                       0
<CURRENT-LIABILITIES>                        2,409,191               2,432,509<F3>                   0                       0
<BONDS>                                              0                       0<F3>                   0                       0
<PREFERRED-MANDATORY>                                0                       0<F3>                   0                       0
<PREFERRED>                                          0                       0<F3>                   0                       0
<COMMON>                                       200,822                 192,119<F3>                   0                       0
<OTHER-SE>                                   3,316,780               5,257,708<F3>                   0                       0
<TOTAL-LIABILITY-AND-EQUITY>                 5,926,793               7,882,336<F3>                   0                       0
<SALES>                                      1,855,393               1,965,061               3,356,565               3,841,796
<TOTAL-REVENUES>                                     0                       0                       0                       0
<CGS>                                        1,382,413               1,545,838               2,671,555               3,110,760
<TOTAL-COSTS>                                        0                       0                       0                       0
<OTHER-EXPENSES>                             1,751,554<F1>                 792,601           3,724,043<F2>           1,535,091
<LOSS-PROVISION>                                     0                       0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0                       0
<INCOME-PRETAX>                            (1,251,627)               (320,976)             (2,976,475)               (714,938)
<INCOME-TAX>                                         0                       0                       0                       0
<INCOME-CONTINUING>                                  0                       0                       0                       0
<DISCONTINUED>                                       0                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0                       0
<CHANGES>                                            0                       0                       0                       0
<NET-INCOME>                               (1,251,627)               (320,976)             (2,976,475)               (714,938)
<EPS-BASIC>                                      (.06)                   (.02)                   (.15)                   (.04)
<EPS-DILUTED>                                    (.06)                   (.02)                   (.15)                   (.04)
<FN>
<F1>INCLUDES $931,000 EQUITY IN LOSS OF 3DV
<F2>INCLUDES $2,022,000 EQUITY IN LOSS OF 3DV
<F3>AMOUNTS ARE AS OF MARCH 31, 1999 (AUDITED)
</FN>


</TABLE>