High Myopia in Transpupillary Thermotherapy Treated Retinoblastoma – CASE REPORT
Abstract
Background: Transpupillary LASER Thermotherapy (TTT) is typically used in retinoblastoma (RB) to salvage vision.1 The children are often young and the focus is typically to manage the tumour without much attention being placed on assessment of visual acuity.
Children who are treated with LASER for retinopathy of prematurity have been found to have higher incidence of myopia.2 he follow up schedule in such young children with RB is usually designed to review regression or to ensure there are no new tumours or metastasis, and visual acuity assessment is not routinely done in early life. Because of the young age of children who are treated with TTT for RB, it is not clear whether they also more susceptive to developing myopia. A previous study on refractive errors in children treated for retinoblastoma reported more hyperopia in posteriorly located tumours, it was however was not related to treatment provided.3 Macula tumours were found to mostly have poor prognosis while visual outcome had no correlation Reese-Ellsworth classification not Excluding Reese-Ellsworth group VB diseases.4 It was also reported that despite laser application directly to the fovea, 57% of patients with macular retinoblastoma retained 20/80 or better vision.5
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