人类婴儿视网膜敏感度与视紫红质的关系。

The relationship of retinal sensitivity and rhodopsin in human infants.

作者信息

Fulton A B, Hansen R M

机构信息

Department of Ophthalmology, Children's Hospital and Harvard Medical School, Boston, MA 02115.

出版信息

Vision Res. 1987;27(5):697-704. doi: 10.1016/0042-6989(87)90066-6.

DOI:10.1016/0042-6989(87)90066-6

PMID:3660630

Abstract

During dark adaptation after full field, greater than or equal to 90% bleaches recovery of sensitivity and regeneration of rhodopsin were studied using electroretinographic and pupillographic techniques in both 10-week-old infants and adults. The courses of scotopic sensitivity recovery and rhodopsin regeneration of infants and adults were similar and were reasonably well fit by single exponentials having tau = 400 sec. For both infants and adults log scotopic sensitivity was linearly related to the proportion of rhodopsin present during dark adaptation. It is concluded that by age 10 weeks human distal retinal processes that occur after photolysis are equivalent to those of adults.

摘要

在全视野暗适应过程中，采用视网膜电图和瞳孔描记技术，对10周龄婴儿和成人大于或等于90%漂白后敏感性恢复及视紫红质再生情况进行了研究。婴儿和成人的暗适应敏感性恢复过程及视紫红质再生过程相似，且用τ = 400秒的单指数曲线能较好拟合。对于婴儿和成人，暗适应期间暗视觉敏感性对数与视紫红质所占比例呈线性相关。得出的结论是，到10周龄时，光解后发生的人类视网膜远端过程与成人相当。