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Macular edema mostly central after cataract surgery

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After cataract surgery, most macular edema occurs in the central macular region, according to a study. The edema was associated with the presence of leaking sites, mostly in the vascular regions of the central macula.

Conceição L. Lobo Pedro M. Faria, MD, and colleagues at University Hospital in Coimbra, Portugal, studied 32 eyes of 32 patients who had undergone uneventful phacoemulsification with implantation of a foldable IOL. Follow-up was at weeks 3, 6, 12 and 30. Retinal thickness, retinal leakage and optical coherence tomography were assessed during follow-up.

Thirteen eyes (41%) showed an increase in retinal thickness that reached a maximum at 6 weeks. At the last follow-up, seven eyes had macular edema, but all eyes had good visual acuities, the authors reported. The researchers frequently found leaking sites in the vascular area of the macula, indicative of abnormal blood-retinal barrier permeability, they said.

The study is published in the April issue of Journal of Cataract & Refractive Surgery.