Clinicopathologic correlation of laser lesion expansion after treatment of choroidal neovascularization.

The clinicopathologic features of photocoagulation lesion expansion after two separate sessions of krypton red laser for choroidal neovascularization (CNV) in an eye with age-related macular degeneration are presented. The area of expansion is characterized by retinal pigment epithelial atrophy and loss of the photoreceptor cell layer. A thin margin of retinal pigment epithelium hypopigmentation and variable photoreceptor cell layer degeneration also borders the lesion in some areas.