Comparison of Treatments in Diabetic Macular Edema

"Laser Parameters of grid photocoagulation Diffuse diabetic macular edema is treated by a grid pattern of laser. The grid is applied to areas of retinal thickening with diffuse leakage or capillary non-perfusion.~Spot size: 50-100 micron is utilized. The burn intensity for grid laser: barely visible (light grey). Power of laser burn is between 80-100 mw depending on the condition of the laser, the opacities in the media and background pigmentation.~Laser burns should be placed at least one burn width apart, wider if thickening is less severe. If necessary, the grid can extend up to 2 disc diameters superiorly, inferiorly, and temporally from the centre of the macula. One should avoid treating within 500 microns of the disc margin or the centre of the macula.~Duration of about 0.05-0.1 sec is used Number of spots- 100-500"

twice daily e/d bromfenac 0.09% for 6 weeks

Observation group. No intervention done. Only eye drop carboxymethyl cellulose 0.5% to be instilled thrice a day for 6 weeks.