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蛋白质 视网膜上杆体细胞的功能主暗视,锥体细胞则主明视,杆体细胞对微弱光线之所以敏感,是因为它包含有一种特殊的视素质;视素质是由蛋白质和维生素A合成的,缺乏它便会引起夜盲症、白内障等眼疾。 维生素A 视素质是一种含有维生素A衍生物的复合蛋白质。如果维生素A缺乏或不足,便会使视素质的再生缓慢,不健全,从而使暗适应机能减退,影响夜视;还会引起角膜上皮脱落、增厚和角质化,使这个原来透明的膜变得不透明。
Protein retina rod and rod cells under the function of the main visual acuity, pyramidal cells are the main light, rod cells are sensitive to weak light, because it contains a special visual quality; visual quality is synthesized by the protein and vitamin A, Lack it will cause night blindness, cataracts and other eye diseases. Vitamin A visual quality is a complex protein containing vitamin A derivatives. If vitamin A deficiency or lack of, it will make the visual quality of the slow regeneration, imperfect, so dark adaptation dysfunction, affecting night vision; also cause corneal epithelial shedding, thickening and keratinization, so that the original transparent membrane change Opaque.