Early Morphologic Changes and Functional Abnormalities in Group 2A Idiopathic Juxtafoveolar Retinal Telangiectasis Using Spectral Domain Optical Coherence Tomography and Microperimetry
- Ichiro Maruko (imaruko{at}fmu.ac.jp),
- Tomohiro Iida (iidat{at}fmu.ac.jp),
- Tetsuju Sekiryu (sekiryu{at}fmu.ac.jp),
- Toshiyuki Fujiwara (fujiwara{at}seagreen.ocn.ne.jp)
- Fukushima Medical University School of Medicine
- Fukushima Medical University School of Medicine
- Fukushima Medical University School of Medicine
- Fukushima Medical University School of Medicine
- Published Online First 14 August 2008
Abstract
Aims: To report early morphologic changes and functional abnormalities in group 2A idiopathic juxtafoveolar retinal telangiectasis (IJRT) using spectral domain optical coherence tomography (SD-OCT) and microperimetry.
Methods: Six eyes (three patients; average age, 64 years) with group 2A IJRT were examined using SD-OCT and microperimetry.
Results: On SD-OCT, breaks in the highly reflective line, considered the boundary between the photoreceptor inner and outer segments, at the temporal to the fovea and corresponding to the telangiectasis lesions were observed in all eyes. Highly reflective tissue was observed in the outer retinal layer in five eyes. In three eyes with a right-angle venule, the outer retinal layer was replaced by the highly reflective tissue and was contiguous to the inner retinal layer. Microperimetry showed the reduction of the retinal sensitivity thresholds at the temporal to the fovea in five eyes.
Conclusions: We observed early morphologic alterations in group 2A IJRT in SD-OCT. These finding might be visualization of Müller cell abnormality on SD-OCT. At the same time, the disorder of photoreceptors occurs at the telangiectasis lesions from MP-1. Detailed observation of these abnormalities provides an understanding of the morphologic and functional features of group 2A IJRT.
