A 'SELECTIVE' TEST OF MAGNOCELLULAR FUNCTION IN NORMALS, GLAUCOMA SUSPECTS, AND GLAUCOMA PATIENTS

Patti Fuhr

Abstract

Large fibers of the retina have been associated with magnocellular pathways and are the first to be affected by glaucoma. This study was conducted to determine differences in normals, glaucoma suspects, and glaucoma patients under treatment, with conditions selective for determination of magnocellular function. This test combines peripheral field stimulation (PFS), which has been shown to adversely affect discriminations of targets mediated by the magnocellular pathway, with a central target we have previously found to be selectively affected by PFS. The task of the subjects (all with 20/25 or better visual acuity) was detection of a 1.2 deg., 10 msec. yellow spot (central target) on a 4 deg. BACKGROUND: The background was luminance matched to a surround which was steady or flickered (50% contrast) at 15 Hz (PFS condition). Normals (n=12) showed a significant sensitivity reduction (p CORNEAL RESPONSE AND RECOVERY TO PHOTOREFRACTIVE KERATOPLASTY. I. TRAUMA

Details

Year: 1992

Program Number: Poster 22

Author Affiliation: n/a

Co-Authors: Thomas Kuyk

Co-Author Affiliation: n/a

Room: Great Hall