Microphthalmos is a developmental ocular disorder defined as a small eyeball. The condition can be associated with abnormalities of anterior and posterior segments. The most common anterior characteristics include corneal opacities, angle-closure and a shallow anterior chamber and cataract. The main findings of posterior segment are uveal effusion, retinal folds, abnormalities of macular capillar vascularization, absence of foveal depression and peripheral retinoschisis. Three patients with microphthalmos were assisted and their OCT features of posterior segment were analyzed. The first case had uveal effusion syndrome, choroidal and retinal detachment treated with parcial sclerectomy at the four quadrants. The other case presented with neurosensory retinal fold at fovea and papillomacular area in both eyes without involvement of retinal pigment epithelium layer and choriocapillaris. The third patient showed absence of foveal depression. The main diferencial diagnosis for this condition is foveal hypoplasia.
The authors present a case of choroidal osteoma diagnosed in a 62-year-old male patient. A well-defined and slightly elevated lesion located in the posterior pole of the right eye associated with internal vasculature and choroidal neovascularization at its superior and inferior temporal edge were suspicious of the tumor. Confirmation of diagnosis was obtained with A and B ecography and computed tomography. Optical coherence tomography showed high reflectivity through its thickness as well as elevation of the RPE-choriocapillaris complex at the choroidal neovascularization site. Although the literature and the present case show several different tomographical findings, optical coherence tomography can help establishing the diagnosis of choroidal osteoma.
IntroduçãoO estudo da interferometria óptica iniciou-se em 1969 e deu origem aos equipamentos atuais de tomografia de coerência óptica (OCT) (1) . A partir dos anos 90 com contínua progressão, houve grande impulso no conhecimento e na aplicabilidade médica deste método que utiliza uma imagem refletida da luz do laser após atravessar as camadas do tecido, in vivo (2) . Atualmente os aparelhos de tomografia de coerência óptica (OCT) apresentam dados comparativos de normalidade padronizados para comparação entre adultos acima de 18 anos. Abaixo desta Características estruturais maculares de olhos de pré-escolares nascidos prematuros: análise por tomografia de coerência óptica e oftalmoscopia binocular indireta
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