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Posters

Microscope-induced photic retinopathy in cataract surgery- a case report

Poster Details

First Author: C.Menezes PORTUGAL

Co Author(s):    J.A. Lemos   R. Gonçalves   P. Coelho   J. Serino   B. Cardoso Vieira   R. Carvalho   0   0 0   0 0   0 0   0 0

Abstract Details



Purpose:

To report a clinical case of photic retinopathy in the context of cataract surgery

Setting:

Department of Ophthalmology - Hospital Pedro Hispano, Matosinhos, Portugal

Methods:

Clinical case report.

Results:

Microscope induced photic retinopathy (MIPO) has been correlated with UV-blue light exposure, being the primary locals of photochemical damage the complex RPE-photoreceptors. Past MIPO rates were reported to be as high as 7%, but are less frequent now because of new and safer microscopes and improved and faster cataract surgery techniques. A 77-year-old woman with antecedents of hypertension was proposed for OD cataract phacoemulsification due to a mild corticonuclear cataract. Best corrected visual acuity (BCVA) was 5/10 and the ophthalmological exam, apart from the cataract, was otherwise normal. The surgery lasted 25 minutes and underwent without complications. Three weeks later, the BCVA was 8/10 with -1,00x100º. The patient was satisfied but referred mild central visual field distortion. The ocular examination was normal, with the exception of a round, one disc diameter, macular lesion with RPE atrophy and variable pigment mottling, best appreciated in fluorescein angiography. The latter and the OCT also confirmed the presence of a mild macular edema, which resolved in 6 weeks with the aid of bromfenac bid. A residual scar with severe irregularity of the RPE subsisted. BCVA improved to 10/10 and is still stable 10 months after surgery.

Conclusions:

Despite the development of new and safer illumination surgical devices in recent years, the potential for retinal damage from microscope light illumination exists, even in uncomplicated and short-duration surgeries.

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