Optical coherence tomography findings in optic disk melanocytoma
Kırk dokuz yaşında erkek hasta yakını görememe şikâyetiyle kliniğimize başvurdu. Her iki gözde uzak görme keskinliği, ön segment bulguları ve göz içi basıncı normal bulundu. Sağ gözde fundus muayenesi normal iken sol gözde hemen hemen optik diskin tamamını çevreleyen zeminden kabarık pigmente bir lezyon tespit edildi. Görme alanı muayenesi (HFA II versiyon 740 Humphrey Instruments, Inc SanLeandro, CA, Santral 30-2 Eşik Test) sağ gözde normaldi fakat sol gözde kör nokta genişlemesi tespit edildi. Optik koherens tomografi (OKT) incelemesinde altında optik gölgelenme yapan yansıtıcılığı yüksek bir tabaka izlendi. OKT melanositomun gerçek boyutlarını belirlemede ve hastalığın takibinde faydalı bir yöntemdir. Ayrıca hastalıkla ilişkili subretinal sıvı, kistoid retinal ödem, retinal traksiyon ve epiretinal membran gibi durumları tespit etmede de yeri vardır. Bu vakayı melanositomun OKT bulgularını vurgulamak için sunuyoruz.
Optik disk melanositomun optik koherens tomografi bulguları
A 49 years old male patient admitted to hospital with difficulty in reading. Distant visual acuity, anterior segment examination, and intraocular pressure measurements were normal in his both eyes. The fundus examination was normal in his right eye but in the left eye a pigmented lesion overlying and surrounding the optic disk was detected. Visual field examination (HFA II version 740 Humphrey Instruments, Inc SanLeandro, CA, Central 30-2 Threshold Test) was unremarkable in his right eye but an enlarged blind spot was detected in his left eye. Optical coherence tomography (OCT) scans showed high reflectance layer with optical shadowing behind it. OCT is a useful device in describing the actual size of melanocytoma and its follow up. OCT has a role to find out associated subretinal fluid, cystoid retinal edema, retinal traction and epiretinal membrane. We are presenting this case to emphasize the OCT findings of melanocytoma.
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