Abstract
Aim:The aim was to report morphological and functional outcomes following modified early treatment diabetic retinopathy study (ETDRS) laser in diabetic macular edema (DME).Materials and Methods:Structural and functional changes using spectral domain optical coherence tomography (OCT) and microperimetry (MP) were studied before and 4 months after laser in 37 eyes with clinically significant macular edema (ME) requiring modified ETDRS laser treatment. Paired t-test was used to compare pre and postlaser outcomes P < 0.05 was considered statistically significant.Results:Central foveal thickness showed a significant reduction after laser P = 0.004. There was a significant reduction in mean retinal thickness (MRT) and retinal volume in all the quadrants of ETDRS except for the temporal and nasal quadrants in outer 6 mm ring. Maximum reduction in MRT was seen in eyes with DME having neurosensory detachment (382.66 μ to 292.61 μ). Retinal sensitivities reduced in all quadrants following laser, however, fixation patterns showed improvements. The change in VA was positively correlated to change in MRT (r = 0.468, P = 0.032).Conclusion:Laser not only causes structural benefits such as reduction of retinal thickness and volume, it also causes improvement of fixation patterns.
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