Pathologic changes of cone photoreceptors in eyes with occult macular dystrophy

Ayami Nakanishi, Shinji Ueno, Kenichi Kawano, Yasuki Ito, Taro Kominami, Shunsuke Yasuda, Mineo Kondo, Kazushige Tsunoda, Takeshi Iwata, Hiroko Terasaki

研究成果: Article査読

22 被引用数 (Scopus)

抄録

PURPOSE. Occult macular dystrophy (OMD) is an inherited retinal disease characterized by a progressive decrease of vision and appearance of normal fundus. To determine the pathologic features of OMD, we investigated the alternation of the photoreceptors using quantitative image analysis. METHODS. We studied 22 eyes of 11 OMD patients. Three of them had a mutation (R45W) in RP1L1. The relative intensities of the ellipsoid zone in the spectral-domain optical coherence tomography (SD-OCT) images and the density of the cone photoreceptors in the adaptive optics (AO) fundus images of the OMD patients were compared to those of normal controls. RESULTS. The relative intensities of the ellipsoid zone in the SD-OCT images of patients with OMD were significantly lower (P < 0.001) by an average of 16% compared to that of the normal controls. Normal cone mosaics were not observed in the AO images of the macula in the eyes with OMD. The mean ± SD of cone density of the 9 OMD patients was 1970 ± 884 cells/mm2 at 2°, 1124 ± 483 cells/mm2 at 3°, and 1288 ± 715 cells/mm2 at 4° nasal to the fovea. The cone densities at 2°, 3°, and 4° nasal to the fovea of OMD were significantly lower than those of the normal controls (P < 0.001). CONCLUSIONS. A sparse array of cone photoreceptors with significantly reduced density of the macula is one of the morphologic features of OMD.

本文言語English
ページ(範囲)7243-7249
ページ数7
ジャーナルInvestigative Ophthalmology and Visual Science
56
12
DOI
出版ステータスPublished - 01-11-2015
外部発表はい

All Science Journal Classification (ASJC) codes

  • 眼科学
  • 感覚系
  • 細胞および分子神経科学

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