Abstract

Conventional methods of measuring retinal function are dependent on the optics of the eye. Therefore, an optical opacity such as a cataract that obstructs the normal optical transmission of light can prevent measurement of retinal function. In some cases a laser interferometer designed to bypass the effects of the optics of the eye may be employed to measure retinal function without interference due to the optical components. In this study we compare contrast sensitivity functions determined by laser interferometry and conventional display methods for cataract and normal eyes. Comparison of laser and monitor contrast sensitivity functions indicates that for these cataract patients interferometric measurements show a normal retinal function, whereas similar measures using the traditional display system (monitor) show considerable loss of visual function. The extent to which contrast sensitivity was limited by the lens of the eye is indicated by the ratio of laser and monitor contrast thresholds. In general, the laser interferometry technique demonstrates that relatively minor cataracts decrease the contrast transfer function of the eye’s optics over a range of spatial frequencies.

© 1988 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Spatial contrast sensitivity: effects of age, test–retest, and psychophysical method

Kent E. Higgins, Myles J. Jaffe, Rafael C. Caruso, and Francisco M. deMonasterio
J. Opt. Soc. Am. A 5(12) 2173-2180 (1988)

Use of displacement threshold hyperacuity to isolate the neural component of senile vision loss

David B. Elliott, David Whitaker, and Penny Thompson
Appl. Opt. 28(10) 1914-1918 (1989)

Quantifying the effect of straylight on photopic contrast sensitivity

Clemente Paz-Filgueira and Elisa M. Colombo
J. Opt. Soc. Am. A 35(7) 1124-1130 (2018)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription