A 51-year-old woman had persistent left-eye floaters for more than 2 decades that had recently become more bothersome.
2
Examination and multimodal imaging showed a mobile, free-floating pigmented vitreous cyst with a translucent lumen and no attachment to the optic disc or peripheral retina.
3
The patient had no intraocular inflammation, and serologic testing for parasitic infection was negative.
4
After pars plana vitrectomy, histopathology showed a cyst wall lined by pigmented cuboidal epithelial cells, supporting an iris or ciliary body pigmented epithelium origin.
5
At 2 weeks after surgery, symptoms had improved and visual acuity increased from 20/60 to 20/25; the single-case report does not establish outcomes beyond this patient.
