Histopathology of krypton red laser panretinal photocoagulation. A clinicopathologic correlation.
The histopathologic appearance of five-day-old and 14-day-old krypton red laser-created panretinal photocoagulation lesions in the diabetic human eye is described. The five-day-old lesions were examined near the equator. The 14-day-old lesions were near the temporal arcades and optic disc. Both groups of laser lesions showed a similar degree of damage and occlusion in the lamina choriocapillaris and deeper choroidal vessels. The 14-day-old posterior laser lesions showed outer retinal damage, whereas the five-day-old peripheral lesions showed full-thickness retinal involvement, probably because the peripheral retina is approximately half the thickness of the posterior retina. The five-day-old lesions showed no evidence of repair, whereas the 14-day-old lesions showed an adhesion formed with tight junctions binding Müller's fibers to retinal pigment epithelium.
D003930:Diabetic Retinopathy / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007726:Krypton; D053685:Laser Therapy; D008028:Light Coagulation; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D012163:Retinal Detachment / Q000473:pathology / Q000601:surgery*; D013997:Time Factors
D007726:Krypton