J Korean Ophthalmol Soc.  1995 Oct;36(10):1700-1705.

Laser Interferometric Visual Acuity in Retinal Diseases

Affiliations
  • 1Department of Ophthalmology, School of Medicine, Soonchunhyang University, Seoul, Korea.

Abstract

Laser interferometry is used to evaluate the retinal visual function in the eyes with media opacity. Although interferometric acuity was known to be useful to predict postoperative Snellen acuity following cataract extraction, the results are somewhat confusing in the eyes with retinal diseases. The author measured interferometric acuity in 43 eyes from 32 patients who were affected by retinal diseases involving macula and had clear ocular media. Average interferometric acuity was 0.47. Hahn's acuity was 0.46 and correlation index between two acuities was 0.64 meaning moderate degree of correlation. Interferometric acuities were better than Hahn's acuity in 23 eyes(53.5%) and worse in 12 eyes(27.9%). Our results suggest that in eyes with macular lesion, interferometric acuity is not sufficient to predict Hahn's acuity although it has some degree of correlation. Therefore, in order to predict the postoperative visual acuity in eyes with media opacity and probable macular lesion, it will be necessary to combine other useful modalities.

Keyword

Laser interferometry; Hahn's acuity; interferometric acuity; macular lesion; retinal disease

MeSH Terms

Cataract Extraction
Humans
Interferometry
Retinal Diseases*
Retinaldehyde*
Visual Acuity*
Retinaldehyde
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