Conjunctival pigmentation after 23-gauge microincisional vitrectomy surgery |
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Authors: | Park D H Shin J P Kim S Y |
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Institution: | Department of Ophthalmology, School of Medicine, Kyungpook National University, Chung-gu, Daegu, South Korea. |
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Abstract: | AimTo investigate cases with conjunctival pigmentation originating from sclerotomy sites after 23-gauge microincisional vitrectomy surgery (MIVS).MethodsThis is a retrospective study comprised of 185 eyes from 185 consecutive patients who underwent 23-gauge MIVS. The authors investigated the incidence and the clinical factors associated with conjunctival pigmentation, including indication of vitrectomy and surgical procedures.ResultsEight eyes (4.3%) from 185 eyes showed conjunctival pigmentation after surgery within 7 days postoperatively. Light microscopic examination of excised tissue showed infiltration of abundant dark brownish colored melanophages with surrounding scattered, finely granular, melanin pigments. C3F8 gas tamponade (OR, 9.4; 95% CI, 1.9–44.5; P=0.005) was significantly associated with conjunctival pigmentation. The mean surface area (21.26±2.21?mm2) of three eyes with C3F8 tamponade was significantly larger than that of five eyes (2.51±0.73?mm2) without tamponade (P=0.025). Neither leakage nor hypotony was found.ConclusionsIntraocular melanin pigments could prolapse through the sclerotomy site and cause conjunctival pigmentation after 23-gauge MIVS. Thus, preoperative warning is necessary in patients with 23-gauge MIVS. |
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Keywords: | melanophage microincisional vitrectomy surgery pigmentation sclerotomy |
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