Asymptomatic Unexplained Visual Field Loss Diagnosed as Early Retinitis Pigmentosa without Pigmentation: A Case Report.
10.3341/jkos.2016.57.8.1325
- Author:
Changhwan LEE
1
;
Moohwan CHANG
;
Sungeun KYUNG
Author Information
1. Department of Ophthalmology, Dankook University Hospital, Dankook University Medical College, Cheonan, Korea. kseeye@hanmail.net
- Publication Type:Case Report
- Keywords:
Constricted central visual field;
Early retinitis pigmentosa (RP) without pigmentation;
Electroretinogram;
Macular optical coherence tomography
- MeSH:
Adult;
Atrophy;
Constriction;
Female;
Fluorescein Angiography;
Humans;
Pigmentation*;
Retinaldehyde;
Retinitis Pigmentosa*;
Retinitis*;
Tomography, Optical Coherence;
Visual Field Tests;
Visual Fields*
- From:Journal of the Korean Ophthalmological Society
2016;57(8):1325-1332
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: We report a case of asymptomatic unexplained visual field loss diagnosed as early retinitis pigmentosa (RP) without pigmentation. CASE SUMMARY: A 33-year-old woman was referred to us with a constricted visual field (C24-2) before laser-assisted in-situ keratomileusis surgery. The visual field test (C30-2) revealed significantly decreased sensitivity between 15 to 25 degrees in both eyes. Close fundus examination revealed a subtle greyish retinal atrophic lesion along the vascular arcade and fluorescein angiography revealed a window defect in accordance with a retinal atrophic lesion in both eyes. Optical coherence tomography showed decreased retinal thickness around the macula. Electroretinogram revealed decreased b waves in rod response. Based on these findings, we diagnosed the patient with early RP without pigmentation. CONCLUSIONS: The possibility of early RP without pigmentation presenting as slight atrophy around the macula without significant pigmental degeneration should also be considered if a patient presents with peripheral visual field constriction without other symptoms. The ophthalmologist should ensure that the location of the visual field defect matches the location of the lesion. In addition, a detailed fundus examination with macular optical coherence tomography can be helpful to diagnose such a lesion.
