. Laser treatment of diabetic cystoid macularoedema with a grid extended to thefoveal avascular zone

摘要

Cystoid macular oedema (CME) is an important cause of visual impairment in diabetic patients and its treatment is an unsolved problem for ophthalmologists.The typical polycystic aspect of the diabetic CME may be caused either by extramacular exudation or by a leakage from the perifoveal capillaries. Generally, it is reported that grid or focal laser photocoagulation is able to improve the fluorangiographic aspect of CME but this often fails to improve the visual acuity significantly. On the other hand it is reported that CME may resolve spontaneously or fluctuate for months or years before causing severe loss of vision7. When the visual acuity tends to decrease to less than 0.5 a perifoveal grid photocoagulation should be performed, here we present our experience about the use of a perifoveolar laser grid extended to the edge of the foveal avascular zone (FAZ) in reducing CME.