Treatment of Proliferative Diabetic Retinopathy:a Comparison of Krypton Green,Krypton Yellow and Krypton Red Lasers

Objective To investigate the therapeutic effect of the krypton green,krypton yellow or krypton red laser in the treatment of proliferative diabetic retinopathy(PDR). Methods Two hundred and forty-three eyes of 167 PDR patients were assigned randomly to receive either krypton green,krypton yellow or krypton red laser treatment,to investigate the changes in the vision and neovessels. Results There was no statistical difference among krypton green,krypton yellow and krypton red laser treatment for PDR(P0.05) in visual improvement,and also between krypton green with krypton red laser in neovessels loss,but there was statistical difference between krypton yellow with krypton green or krypton red laser in it. Conclusions The three kinds of krypton lasers all have therapeutic effect on PDR,but the krypton green and krypton red lasers should be preferred.