Abstract
OBJETIVO: Analisar os achados clínico-oftalmológicos de portadores de nevo de Ota. MÉTODOS: Análise retrospectiva dos prontuários de pacientes com nevo de Ota. Foram registrados dados demográficos, localização do nevo e época do seu aparecimento, história familiar de manchas similares, olho acometido, achados ectoscópicos (classificação de Tanino), biomicroscópicos, fundoscópicos e campimétricos. RESULTADOS: Foram incluídos 14 pacientes, seis (47,0%) homens e oito (53,0%) mulheres com média de idade de 21,7±17,5 anos. Dez (71%) pacientes eram feodérmicos, três (21,4%) leucodérmicos e um (7,1%) [...]
Highlights
Nevus of Ota (“nevus fusco-coeruleus ophthalmomaxillaris” or ocular dermic melanocytosis) is a clinical condition characterized by blue-dark pigmentation, green-blue, violet, or tan spots in the eyes and/or on the face’s skin and lids
The nevus of Ota appears at birth but can occur in puberty or during pregnancy.[3]. In the ocular region, the spots with the aforementioned colorations can be found on the conjunctiva and episclera, sclera, cornea, iris, choroid, retina, extra ocular muscles, retrobulbar fat and periostium.[3]. Nevus of Ota can be associated with various ocular abnormalities such as congenital glaucoma, Duanes syndrome and melanoma.[4,5,6] For some authors, glaucoma is frequently associated with nevus of Ota in blacks.[7,8] Malignant alterations may occur in nevus of Ota with the appearance of melanoma affecting the skin, orbit, iris, ciliary body, choroid and brain.[4,5,6]
A new classification of nevus of Ota based on the response to laser treatment has been determined.[10]. This new classification allows for the prediction of the clinical outcome of laser treatment.[10]
Summary
Nevus of Ota (“nevus fusco-coeruleus ophthalmomaxillaris” or ocular dermic melanocytosis) is a clinical condition characterized by blue-dark pigmentation, green-blue, violet, or tan spots in the eyes and/or on the face’s skin and lids. Nevus of Ota has been classified in various manners.[8,9,10] In 1939, Tanino[8] proposed a histological classification of the nevus of Ota into five types based on the locations of the dermal melanocytes. They are either [1] superficial, [2] superficial dominant, [3] diffuse, [4] deep dominant, and [5] deep. This new classification allows for the prediction of the clinical outcome of laser treatment.[10]
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