In vivo transmission assessment of the human eye

ISSOLIO LUIS; DE PAUL ANÍBAL; SÁNCHEZ ROBERTO

New York

Conferencia; 16th Annual Optical Society Fall Vision Meeting; 2016

The Optical Society (OSA)

Purpose: Estimate transmission of human eye in vivo through double-pass (DP) technique.Methods: DP images were recorded on an artificial eye for different power of the laser beam using a DP system. The intensity values of a peripheral area (25 to 35 arc min) were averaged for each image and a linear relationship between the amount of scattered energy around the central area and the laser power was found. By placing neutral filters and diffusion filters in front of the artificial eye, it can be seen that the slopes of the lines (PNR) are arranged according to the transmittance of these filters. When the reflectance of the artificial retina used is changed, results are the same. From these findings it was possible to obtain a calibration function that determines the transmittance of the eye through the slope PNR. Ten eyes of volunteer subjects were assessed in a second series of measures.Results: We could find overall transmittance values about 35 to 45% on the eyes of volunteers.Discussion: Transmittance values are lower than those found in the literature (around 80%), although the latter does not include the transmittance of the retina, relatively low because it is a tissue that absorbs much of the light.