Dynamics of ocular surface topography in healthy subjects

Béla Erdélyi, Béla Csákány, Gábor Rödönyi, Alexandros Soumelidis, Zsolt Lang, J. Németh

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Our topography system is an enhancement of a standard TMS-1 corneal topograph instrument (Computed Anatomy Inc., New York, NY, USA). Topographic images are captured at a rate of 4 s-1, allowing the recording of a series of 120 images in 30 s after a complete blink. In this prospective preliminary study 15 healthy volunteers were examined. The main outcome measures were the time profile of changes in surface regularity index (SRI), surface asymmetry index (SAI) and simulated keratometry values (K1, K2). After a blink there was a tendency for improvement in ocular surface regularity. Later trends were less clear. Our topography system makes possible the detailed evaluation of tear-film dynamics in the post-blink period. The new technique may play an important role in the diagnosis of various tear-film abnormalities; the results may also have significant implications in the planning of refractive surgeries.

Original languageEnglish
Pages (from-to)419-425
Number of pages7
JournalOphthalmic and Physiological Optics
Volume26
Issue number4
DOIs
Publication statusPublished - Jul 2006

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Keywords

  • Complete blink
  • Corneal topography
  • Ocular surface
  • Tear film dynamics

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems
  • Health Professions(all)

Cite this

Dynamics of ocular surface topography in healthy subjects. / Erdélyi, Béla; Csákány, Béla; Rödönyi, Gábor; Soumelidis, Alexandros; Lang, Zsolt; Németh, J.

In: Ophthalmic and Physiological Optics, Vol. 26, No. 4, 07.2006, p. 419-425.

Research output: Contribution to journalArticle

Erdélyi, B, Csákány, B, Rödönyi, G, Soumelidis, A, Lang, Z & Németh, J 2006, 'Dynamics of ocular surface topography in healthy subjects', Ophthalmic and Physiological Optics, vol. 26, no. 4, pp. 419-425. https://doi.org/10.1111/j.1475-1313.2006.00389.x
Erdélyi, Béla ; Csákány, Béla ; Rödönyi, Gábor ; Soumelidis, Alexandros ; Lang, Zsolt ; Németh, J. / Dynamics of ocular surface topography in healthy subjects. In: Ophthalmic and Physiological Optics. 2006 ; Vol. 26, No. 4. pp. 419-425.
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