Acetazolamide-induced Bilateral Choroidal Effusion Following Insertion of a Phakic Implantable Collamer Lens

Purpose: To present the case of a 28-year-old man with acetazolamide-induced bilateral choroidal effusion after uneventful surgery of the second eye in delayed sequential bilateral insertion of an implantable collamer lens for hyperopia.

Methods: Case report.

Results: Surgery of the left eye was uneventful, and the implantable collamer lens was implanted 3 weeks later in the right eye. Twenty-four hours after surgery, the patient presented with bilateral shallow anterior chamber, vault 0, and myopic shift (-8 diopters) in both eyes. B-scan ultrasound showed choroidal thickening in both eyes, which was consistent with choroidal effusion syndrome. A causal relationship was suspected with oral acetazolamide, which had been prescribed after surgery. When the drug was stopped, the condition improved slowly and resolved completely within 5 days.

Conclusions: Choroidal effusion should be included in the differential diagnosis of shallow anterior chamber after implantation of an implantable collamer lens.