AIM: To investigate the methods, effect and complication of treating different types of after cataract withNd:YAG laser.

METHODS: A total of 360 patients 382 eyes with different types of after cataract were treated by Nd:YAG laser. The complication and visual acuity were observed. Laser parameters in three groups of one-level, two-lever, three-level membrane were recorded. Laser parameters in four groups of senile cataract, congenital cataract, complicated cataract and traumatic cataract were statistically analyzed.

RESULTS: The best-corrected visual acuity had significant difference after laser treatment(P<0.05). The average total laser energy and pulse had significant difference comparing with senile and traumatic group(P<0.05). The complications included high intraocular pressure in 7 eyes(1.8%)and the damage of lens in 26 eyes(7.7%).

CONCLUSION:Nd:YAG laser is a safe and effective method for after cataract. Three-level membrane in traumatic cataract is in majority. Single dose energy, total pulse and total laser energy are all big. Different therapic laser parameter according to different patients and timely treatment of complication can improve effect and safety.