Chorioretinal Anastomosis and Retinal Detachment with Laser Photocoagulation Treated Incontinentia Pigmenti

The objective of this study was to describe a case of incontinentia pigmenti in which chorioretinal anastomosis occurred after laser photocoagulation, which was ultimately complicated by tractional and rhegmatogenous detachment. This was an observational case report. A 2-month-old was referred to ophthalmology for a rash characteristic of incontinentia pigmenti due to concern for ocular involvement and was found to have peripheral avascular retina with early neovascularization. Following several rounds of panretinal photocoagulation, a chorioretinal anastomosis was noted on follow-up fluorescein angiography in the left eye. Subsequently, a tractional retinal detachment formed and was treated initially with a lens sparing pars plana vitrectomy, endolaser, and scleral buckle. Despite treatment, it progressed to a combined tractional/rhegmatogenous detachment and was deemed inoperable. Chorioretinal anastomosis is a rare complication of laser photocoagulation.