Corneal biomechanics following Epi-LASIK

Denise S. Ryan, Charles D. Coe, Robin S. Howard, Jayson D. Edwards, Kraig Bower

Research output: Contribution to journalArticle

Abstract

PURPOSE: To evaluate corneal biomechanical changes following epi-LASIK. METHODS: In this prospective study of 51 patients, corneal hysteresis (CH), corneal resistance factor (CRF), and intraocular pressure (IOP) were assessed using the Ocular Response Analyzer (ORA, Reichert Technologies) preoperatively and at 1, 3, 6, and 12 months after epi-LASIK. Repeated measures analysis of variance (ANOVA) was used to compare changes over time (alpha=.05). Intraocular pressure was also measured by Goldmann applanation tonometry. RESULTS: Corneal hysteresis decreased from 10.22±1.65 mmHg preoperatively to 8.17±1.25 mmHg at 1 month, 8.46±1.44 mmHg at 3 months, 8.63±1.31 mmHg at 6 months, and 8.53±1.49 mmHg at 12 months. Corneal resistance factor decreased from 10.01±1.80 mmHg preoperatively to 7.82±1.68, 8.03±1.85, 7.77±1.50, and 7.80±1.66 mmHg at 1, 3, 6, and 12 months, respectively. Repeated measures ANOVA showed a significant change over time for both CH and CRF (P

Original languageEnglish (US)
Pages (from-to)458-464
Number of pages7
JournalJournal of Refractive Surgery
Volume27
Issue number6
DOIs
StatePublished - Jun 2011
Externally publishedYes

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Laser In Situ Keratomileusis
R Factors
Biomechanical Phenomena
Intraocular Pressure
Analysis of Variance
Manometry
Prospective Studies
Technology

ASJC Scopus subject areas

  • Ophthalmology
  • Surgery

Cite this

Corneal biomechanics following Epi-LASIK. / Ryan, Denise S.; Coe, Charles D.; Howard, Robin S.; Edwards, Jayson D.; Bower, Kraig.

In: Journal of Refractive Surgery, Vol. 27, No. 6, 06.2011, p. 458-464.

Research output: Contribution to journalArticle

Ryan, DS, Coe, CD, Howard, RS, Edwards, JD & Bower, K 2011, 'Corneal biomechanics following Epi-LASIK', Journal of Refractive Surgery, vol. 27, no. 6, pp. 458-464. https://doi.org/10.3928/1081597X-20110112-01
Ryan, Denise S. ; Coe, Charles D. ; Howard, Robin S. ; Edwards, Jayson D. ; Bower, Kraig. / Corneal biomechanics following Epi-LASIK. In: Journal of Refractive Surgery. 2011 ; Vol. 27, No. 6. pp. 458-464.
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