AIM:To discuss the change of stereopsis and pattern visual evoked potential(P-VEP)in amblyopia before and after the treatment.

METHODS: According to the type of amblyopia, forty-one patients(68 eyes)were divided into strabismic group(7 eyes of 4 patients), anisometropic group(11 eyes of 11 patients)and ametropic group(50 eyes of 26 patients). Uncorrected visual acuity, best-corrected visual acuity, P-VEP, simultaneous perception, range of fusion and stereoacuity were examined before and after the treatment, which including laser therapy, CAM training, red light flashing, stereoacurity training and IF-pulse treatment of computer.

RESULTS: Before the treatment, the abnormal rate of simultaneous perception and range of fusion were both 51.2%, while stereoacuity was 80.5%, which means stereoacuity was damaged most commonly in amblyopia. Visual acuity was improved after the treatment: cure rate was 63%; progress rate was 31%; total efficiency rate was 94%.There was a statistical difference between ametropic group and strabismic or anisometropic group in term of efficiency rate. Stereopsis was significantly promoted(P<0.01)and the P100 latency was significantly shortened(P<0.05).

CONCLUSION: After the treatment of amblyopia, visual acuity and stereopsis were both promoted and the P100 latency was shortened.