Relationship between distribution of tapetum fibrosum and retinal pigment epithelium in the sheep eye.
作者： Aya SHINOZAKI , Yoshinao HOSAKA , Tomohiro IMAGAWA , Masato UEHARA
DOI: 10.1292/JVMS.09-0413
关键词:
摘要: The tapetum lucidum is a light-reflective device improving visual sensitivity in mesopic vision. There have been few studies on tapetal distribution and its relationship with degree of pigmentation the retinal pigment epithelium (RPE). In present study, sheep's eyes were used for macroscopical observation tapetum, then histological sections posterior eyecups made to analyze thickness RPE. Macroscopically, available light, was located dorsal eye fundus optic disc showed an L-shape horizontally elongated nasal part dorsally expanded temporal part. photographs flash, area more triangular shape. histologically consisted layers dense collagen fibers thicker than maximum approximately 70 μm. similar shape flash light. RPE divided into three types, nonpigmented, transitional, pigmented areas. nonpigmented It suggested that 55% covered functional under natural light condition. L-shaped high-density ganglion cells.
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