Corneal topography changes after a 15 second pause in blinking

J. Németh, Béla Erdélyi, Béla Csákány

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Purpose: To examine the effect of a short pause in blinking on the quantitative topographic parameters of the corneal surface. Setting: Refractive corneal surgery unit of a university eye hospital. Methods: Using a TMS-1 instrument (Computed Anatomy, Inc.), corneal topographic parameters were measured 5 and 15 seconds after a complete blink in 12 healthy subjects. The main outcome measures were changes in the surface regularity index (SRI) and the surface asymmetry index (SAI). Results: During the pause in blinking, the mean SRI value increased from 0.18 ± 0.19 (SD) to 0.30 ± 0.19 (P <.02) and the SAI from 0.21 ± 0.08 to 0.24 ± 0.10 (P = .079, not statistically significant). There were no significant changes in the values for potential visual acuity, corneal refractive power, or astigmatism. Conclusion: The results indicated a significant change in corneal topography during even a short pause in blinking. In follow-up studies using corneal topography, all measurements should be done at a fixed time after a complete blink.

Original languageEnglish
Pages (from-to)589-592
Number of pages4
JournalJournal of Cataract and Refractive Surgery
Volume27
Issue number4
DOIs
Publication statusPublished - Apr 2001

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Corneal Topography
Blinking
Refractive Surgical Procedures
Astigmatism
Visual Acuity
Anatomy
Healthy Volunteers
Outcome Assessment (Health Care)

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Corneal topography changes after a 15 second pause in blinking. / Németh, J.; Erdélyi, Béla; Csákány, Béla.

In: Journal of Cataract and Refractive Surgery, Vol. 27, No. 4, 04.2001, p. 589-592.

Research output: Contribution to journalArticle

Németh, J. ; Erdélyi, Béla ; Csákány, Béla. / Corneal topography changes after a 15 second pause in blinking. In: Journal of Cataract and Refractive Surgery. 2001 ; Vol. 27, No. 4. pp. 589-592.
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