RESUMO
PURPOSE: To compare anisometropic hypermetropic amblyopic and strabismic amblyopic responses to pattern electroretinogram (PERG) and pattern visual evocated potential (PVEP). MATERIALS AND METHODS: Fifty-six patients - 18 hypermetropic anisometropic amblyopic children (mean age 9.70±2.5 years), 19 strabismic amblyopic children (mean age 10.30±2.6 years) and 19 normal emetropic subjects (mean age 10.10±2.2 years) - were enrolled in this study. After routine ophthalmic examination, PERG and PVEP were recorded in response to checks reversed at the rate of two reversals/second stimulating macular area. RESULTS: The difference between hypermetropic anisometropic amblyopia and strabismus amblyopia with respect to P100/P50/N95 wave latencies (P=0.055/0.855/0.132) and P100/P50/N95 amplitudes (P=0.980/0.095/0.045) was not statistically significant. However, there was a significant statistical difference between strabismic amblyopia group and controls for P100/P50/N95 latencies (P=0.000/0.006/0.004). CONCLUSION: Our findings indicated that despite clinical differences between anisometropic amblyopic and strabismic amblyopic patients, no differences were found in the responses of PVEP and PERG. The abnormal components of the PVEP and PERG in amblyopic subjects could reflect a retinal dysfunction in the visual pathway.
RESUMO
Objetivo: Apresentação de dois casos atípicos de coriorretinopatia cerosa central idiopática (CSCI). Local: Departamento de Oftalmologia, Hospital Universitário Clementino Fraga Filho. Faculdade de Medicina da Universidade Federal do Rio de Janeiro - UFRJ. Métodos: Dois pacientes do sexo masculino, com queixa de importante redução da acuidade visual, foram submetidos à propedêutica oftalmológica para investigação diagnóstica. Resultados: Os pacientes apresentavam duas diferentes formas atípicas de evolução de CSCI. Conclusões: A epiteliopatia pigmentária retiniana difusa, como uma manifestação incomum de CSCI, deve ser considerada como diagnóstico diferencial em pacientes portadores de maculopatias bilaterais em faixas etárias mais elevadas.