角膜
解剖
结膜
结缔组织
基质
生物
上皮
镜头(地质)
角膜内皮
人口
医学
神经科学
免疫组织化学
免疫学
古生物学
环境卫生
遗传学
作者
Miguel González‐Andrades,Pablo Argüeso,Ilene K. Gipson
出处
期刊:Essentials in ophthalmology
日期:2019-01-01
卷期号:: 3-12
被引量:6
标识
DOI:10.1007/978-3-030-01304-2_1
摘要
The cornea is a uniquely translucent, avascular tissue located on the anterior segment of the eye. It is surrounded and maintained by the adjacent corneoscleral limbus and the connective tissue of the conjunctiva with its adnexa. It plays a vital role in visual function by providing (1) the major refractive component of the visual system, (2) a translucent tissue that allows light passage to the lens and retina, and (3) a barrier that protects the eye from fluid loss and the external environment. These crucial functions result from the structure of the cornea, which is composed of three anatomical layers: epithelium, stroma, and endothelium. The limbus is the reservoir for the adult stem cell population that replenishes the cornea and is the site of termination of the vasculature and entry of the nerves that provide an extraordinarily rich innervation environment.
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