Effect of cataract on automated perimetry

Byron L Lam, W. L M Alward, H. E. Kolder

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Humphrey visual fields (30-2 program) were performed on 24 otherwise healthy patients before and after cataract extraction to examine the effect of cataract on automated visual fields. All patients met reliability index criteria and recovered visual acuity of 20/25 or better. The effect of learning associated with repeated testing was controlled with visual fields of the fellow eye. Although a greater absolute threshold recovery occurred in the central region of the visual field after cataract extraction, the percent of threshold recovery did not vary across the visual field except for the most peripheral testing points, which demonstrated less recovery. Thus, cataracts depress an automated visual field fairly uniformly. Clinical grading of cataracts by a single experienced clinician was generally a poor predictor of visual field loss. Only the presence of posterior subcapsular plaque in the visual axis and the preoperative visual acuity correlated significantly with postoperative central threshold recovery. Pattern standard deviation remained unchanged after cataract removal, confirming it as a useful way of estimating visual loss from cataracts.

Original languageEnglish
Pages (from-to)1066-1070
Number of pages5
JournalOphthalmology
Volume98
Issue number7
StatePublished - Jan 1 1991
Externally publishedYes

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Visual Field Tests
Visual Fields
Cataract
Cataract Extraction
Visual Acuity
Learning

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Lam, B. L., Alward, W. L. M., & Kolder, H. E. (1991). Effect of cataract on automated perimetry. Ophthalmology, 98(7), 1066-1070.

Effect of cataract on automated perimetry. / Lam, Byron L; Alward, W. L M; Kolder, H. E.

In: Ophthalmology, Vol. 98, No. 7, 01.01.1991, p. 1066-1070.

Research output: Contribution to journalArticle

Lam, BL, Alward, WLM & Kolder, HE 1991, 'Effect of cataract on automated perimetry', Ophthalmology, vol. 98, no. 7, pp. 1066-1070.
Lam BL, Alward WLM, Kolder HE. Effect of cataract on automated perimetry. Ophthalmology. 1991 Jan 1;98(7):1066-1070.
Lam, Byron L ; Alward, W. L M ; Kolder, H. E. / Effect of cataract on automated perimetry. In: Ophthalmology. 1991 ; Vol. 98, No. 7. pp. 1066-1070.
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