RESUMEN
OBJETIVO: Avaliar a acurácia e a precisão da retinoscopia sem lentes neutralizadoras na hipermetropia experimental de olho artificial. MÉTODOS: Observação da projeção da faixa do retinoscópio em olho artificial preparado para apresentar hipermetropias de +1,00 D a +8,00 D. A movimentação da faixa é feita simultaneamente com a variação da sua largura, deslocando a luva do retinoscópio até a obtenção da neutralização do movimento. O retinoscópio foi preparado para dois modos de medida: com escala milimétrica sob a luva e com acoplamento a potenciômetro ligado a multímetro de leitura digital em ohms (Ù). Oito médicos oftalmologistas realizaram 1200 retinoscopias em cada modo de medida, num total de 2400. Calculou-se a média e o desvio padrão das observações. Para comparar os resultados em mm e em ohms (Ù) calculou-se o coeficiente de variação (CV) a partir dos desvios padrão das observações em cada modo. RESULTADOS: Pelos modos descritos foi possível estimar hipermetropias até +4,00 dioptrias. CONCLUSÃO: A acurácia e a reprodutibilidade experimentais foram boas na identificação de hipermetropias até +4 ,00 D.
OBJECTIVE: Evaluate accuracy and reproducibility of streak retinoscopy without neutralising lenses in experimental hyperopia of an artificial eye. METHODS: Observe a Welsh Allynretinoscope streak through the pupil of an artificial eye prepared do show hyperopia from +1,00 D to +8,00 D. The streak was moved while varying its width by sliding the sleeve upwards until neutralisation point. The retinoscope was fitted either with a millimetre scale under the sleeve or with a multimetre connected to a rheostat driven by a spool snugly fastened around the sleeve. Multimetre readings were taken in ohms (Ù). Eight ophthalmologists performed 1200 in each mode totalysing 2400 readings. Average and standard deviation of the readings in each mode were determined, as well as the variation coefficient in order to allow comparison of results in millimetre and Ù. RESULTS: Based on the proposed method it was possible to estimate hyperopia up to +4,00 D. CONCLUSION: Accuracy and reproducibility in experimental hyperopia of an artificial eye was feasible up to +4,00 D.
Asunto(s)
Ojo Artificial , Hiperopía , Retinoscopía/métodos , Ensayo ClínicoRESUMEN
We describe a case of chronic conjunctivitis related to phthiriasis palpebrarum. A 36 year-old female presented with gradual pruritus and painless ocular hyperaemia over the previous 3 months. On examination, nasal pterygium, conjunctival hyperaemia, oedema, and mild hypertrophy of the palpebral margin were observed. A slit-lamp examination revealed numerous creamy oval structures approximately 1 mm in diameter localised in the middle area of the lashes, and bloody crusts and a semi-transparent deposit were present in the superior palpebral margin. Based on the observation of numerous nits at the base of the eyelashes and the ectoparasite in the palpebral margin, a diagnosis of phthiriasis palpebrarum was made. The patient was referred to an infectologist for evaluation of other sexually transmitted diseases and examination of other body areas. She was successfully treated with oral ivermectin, shampoo for ciliary hygiene and artificial tears. Other recommendations to avoid re-infestation were made, such as changing, washing and sterilising clothes, towels and sheets daily. This report emphasizes the importance of the correct diagnosis and management of this disease, considered as sexually transmitted.
