Bilateral Late-Onset Pigment Dispersion Syndrome following Implantable Collamer Lens Surgery: A Case Report

We report a case of bilateral pigment dispersion syndrome after 13 years of uncomplicated implantable collamer lens (ICL) surgery.

A 53-year-old woman was referred from her optometrist to our glaucoma clinic due to early superonasal visual field loss in both eyes. She was asymptomatic with no changes in visual acuity and had undergone bilateral ICL implantation 13 years ago to correct her high myopia. Clinical examination revealed pigment deposition on the corneal endothelium, iris transillumination defects, and iris vaulting at the areas of contact with the ICL. Gonioscopy showed open angles with significant pigmentation of the trabecular meshwork. The diagnosis of pigment dispersion syndrome secondary to ICL implantation was made, and subsequent follow-up visits demonstrated normal intraocular pressure IOP and stable visual fields.

Pigmentary dispersion syndrome can occur several years after ICL implantation. This case report emphasizes the need for long-term follow-up and monitoring after ICL surgery.