The mean amplitude and latency in mVEP responses between normal control group were 183±11nV, 95±8ms, and in senile cataract group were 177±10nV, 96± 8ms respectively, there were no significant difference between two groups (P>0.05). The mean amplitude and latency of cataract with glaucoma 138±7nV, 99±6ms were significantly different comparing to both control and senile cataract group (P<0.05). After surgery, the am-plitude and latency were 276±11nV and 93±8ms respec-tively, which did not change significantly comparing to the normal eyes (P<0.05), their visual function got no obvious damage and visual recovery were better (BCVA≥0.8). While those with central amplitude 221±6nV and latency 105±7ms that were significantly deviated from control group (P<0.05), and their visual function were seriously damaged and visual recovery were much poorer (BCVA<0.3).
CONCLUSION:
mVEP waveform might enable us to evaluate objective visual function detection before cataractsurgery. A subject with visual function damage, their mVEP responses to stimulation were severely changed when it compared to controls.