Accession Number:

ADA511514

Title:

Review of Efforts to Develop a Low-Luminance-Level Disability Glare Tester

Descriptive Note:

Final rept.

Corporate Author:

ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL

Report Date:

2009-09-01

Pagination or Media Count:

68.0

Abstract:

This report describes USAARLs efforts to develop a disability glare tester that could be used for predicting night vision problems resulting from post refractive surgery, particularly for U. S. Army aviators. The nature complexity of the problem are reviewed, along with current methods for assessing disability glare. The best current techniques focus on measuring evaluating the effects of forward scatter in the eye. While elegant, forward scatter measurements alone do not reliably predict night vision problems due to aberrations induced by refractive surgery. Low-level efforts to develop a procedure that can predict night vision problems resulting from aberrations induced by refractive surgery have been pursued at USAARL for many years. The latest efforts focus on developing hybrid procedures that use an alternating spot threshold, with d without a pupil-sparing glare annulus pedestal, a single spot threshold combined with a single-spot increment threshold procedure to obtain an indication of both blur intraocular forward scatter. Further refinement testing of these techniques is necessary to determine the efficacy of the approaches.

Subject Categories:

  • Anatomy and Physiology
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE