Optical Coherence Tomography Of Macular Edema

Objective : To observe the characteristics of optical coherence tomography (OCT) in macular edema, measure the retinal thickness at the central fovea and study the relationship between the thickness and the visual acuity with best correction of affected eyes. Methods : Total of 47 cases (54 eyes) with clinical diagnosis of macular edema by direct, indirect ophthalmoscopy, three mirror contact lens, or fundus fluorescein angiography (FFA) were examined with OCT, the examination focused on the horizontal and vertical planes crossing the central fovea. we studied the correlation between retinal thickness at the central fovea and best-corrected visual acuity of affected eyes. Result : In the 54 eyes, sponge-like retinal swelling was found in 20 eyes (37.10%), macular cystoid edema was found in 26 eyes (48.1%), and serous retinal detachment was found in 8 eyes (14.8%). The retinal thickness at the central fovea of the affected eyes was thicker than that of normal eyes. The statistical analysis showed there was a negative correlation between the thickness at the central fovea and best-corrected visual acuity of affected eyes.(r=-0.569, p=0.000).Conclusion : There were three types of images of OCT in macular edema: sponge-like retinal swelling, macular cystoid edema and serous retinal detachment. The retinal thickness at the central fovea of the affected eyes with macular edema was thicker than that of the normal eyes, and the thicker the fovea under the OCT, the poorer the visual acuity of the afftectd eyes.