PURPOSE: To describe findings of spectral domain optical coherence tomography (SD-OCT) in the diagnosis of occult macular dystrophy (OMD). MATERIALS AND METHODS: Five visually disturbed patients who had shown normal findings in full field electroretinogram (ERG), fundus photography and fluorescein angiography but abnormal findings in multifocal ERG had undergone SD-OCT. The morphologic changes in retina and macular thickness were detected and imaged by SD-OCT. We analysed the results of SD-OCT including macular thickness, inner segment and outer segment (IS/OS) boundary and external limiting membrane (ELM). RESULTS: Mean age was 41.6 (22-63) in three male and two female patients in this study. Mean central foveal thickness was 142.9 (76-161) μm. All patients had shown decreased bowing of IS/OS boundary, and five of nine eyes were noted with disrupted IS/OS boundary of the photoreceptors according to SD-OCT. The interruption of external limiting membrane was noted in three of nine eyes. CONCLUSIONS: Spectral domain optical coherence tomography findings are useful in diagnosing OMD. Morphologic changes of the retina including deformity of the OS/IS boundary of the photoreceptors, disruption of the ELM and decreased foveal thickness may be important characteristics to consider when determining the pathophysiology and diagnosing criteria of OMD.
PURPOSE: To describe findings of spectral domain optical coherence tomography (SD-OCT) in the diagnosis of occult macular dystrophy (OMD). MATERIALS AND METHODS: Five visually disturbed patients who had shown normal findings in full field electroretinogram (ERG), fundus photography and fluorescein angiography but abnormal findings in multifocal ERG had undergone SD-OCT. The morphologic changes in retina and macular thickness were detected and imaged by SD-OCT. We analysed the results of SD-OCT including macular thickness, inner segment and outer segment (IS/OS) boundary and external limiting membrane (ELM). RESULTS: Mean age was 41.6 (22-63) in three male and two female patients in this study. Mean central foveal thickness was 142.9 (76-161) μm. All patients had shown decreased bowing of IS/OS boundary, and five of nine eyes were noted with disrupted IS/OS boundary of the photoreceptors according to SD-OCT. The interruption of external limiting membrane was noted in three of nine eyes. CONCLUSIONS: Spectral domain optical coherence tomography findings are useful in diagnosing OMD. Morphologic changes of the retina including deformity of the OS/IS boundary of the photoreceptors, disruption of the ELM and decreased foveal thickness may be important characteristics to consider when determining the pathophysiology and diagnosing criteria of OMD.
Authors: Ferenc B Sallo; Tunde Peto; Catherine Egan; Ute E K Wolf-Schnurrbusch; Traci E Clemons; Mark C Gillies; Daniel Pauleikhoff; Gary S Rubin; Emily Y Chew; Alan C Bird Journal: Invest Ophthalmol Vis Sci Date: 2012-11-29 Impact factor: 4.799