Viual Dyfunction After Panretinal Photocoagulation in Patient With evere Diabetic Retinopathy and Good Viion

Purpoe To compare macular thickne and bet-corrected viual acuity (BcVA) before and after panretinal photocoagulation (PRP) in patient with evere diabetic retinopathy and good viual acuity (VA) to identify factor that predict pot-operative viual function. Deign Propective, non-comparative, interventional cae erie. Method ixty-four conecutive patient with evere non-proliferative diabetic retinopathy or with non-high-rik proliferative diabetic retinopathy whoe VA wa 20/20 or better before PRP were tudied. ixty-four eye of 64 patient underwent catter PRP in four eion every other week. Macular thickne wa meaured by optical coherence tomography (OCT), and VA wa meaured before and periodically after PRP. Reult During the 24-week obervation period, patient were claified into three group according to change in VA during the pot-operative period. In group A, VA wa maintained at pre-operative level in 54 (84%) eye during the 24 week after PRP. In group B, VA initially decreaed in three eye but ubequently recovered to baeline during the obervation period; in group C, VA did not recover during follow-up in even eye. There wa no ignificant difference in pre-operative foveal thicknee among the three group, but parafoveal thickne wa <260 μm in group A, ranged from 270 to 280 μm in group B, and wa >300 μm in group C. Concluion For eye with evere diabetic retinopathy and good VA, PRP did not affect pot-operative VA in more than 80% of patient. Patient whoe pre-operative parafoveal thickne wa >300 μm had a wore viual prognoi.