Penlight test for glare disability of cataracts

Ophthalmic Surg. 1988 May;19(5):356-8.

Abstract

We describe an alternative glare test using a simple penlight. When the glare and decrease in vision created by the penlight were compared on Snellen chart recordings, 92% of eyes within 20/50 or less visual acuity were no longer able to see even the 20/200 Snellen figure. This penlight test is suggested as an adjunct to standard Snellen testing in the evaluation of the cataract surgery patient.

MeSH terms

  • Aged
  • Cataract / physiopathology*
  • Evaluation Studies as Topic
  • Humans
  • Light
  • Lighting
  • Scattering, Radiation
  • Vision Tests* / instrumentation
  • Vision Tests* / standards
  • Vision, Ocular*
  • Visual Acuity