Elsevier

Vision Research

Volume 31, Issue 10, 1991, Pages 1837-1840
Vision Research

Transmission of light across the adult and neonatal eyelid in vivo

https://doi.org/10.1016/0042-6989(91)90031-YGet rights and content

Abstract

Light transmission characteristics of the human adult and neonatal eyelid were measured in vivo. Light was delivered via a grating monochromator through a fibre-optic mounted onto a contact lens placed under the eyelid, and detected using a photodiode on its external skin surface. Data from 5 adult and 9 preterm neonatal subjects indicate that the eyelid acts as a predominantly red-pass filter, with mean transmissions at 700 nm of 14.5% in the adult and 21.4% in the neonate, declining to ⩽3% in both groups below 580 nm. The relevance of this data to clinical electrophysiology and to estimates of retinal irradiance is discussed.

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