Central corneal pachymetry in patients undergoing laser in situ keratomileusis

Francis W. Price, Daniel L. Koller, Marianne O. Price

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

Objective: To report the preoperative ultrasonic central pachymetric measurements on a large group of eyes undergoing laser-assisted in situ keratomileusis (LASIK) surgery for myopia and myopic astigmatism, to determine whether central corneal thickness is correlated with other geometric features of the eye or is correlated with age or gender, and to discuss the resulting limitations on possible ablation depths. Design: Prospective, multisite, cross-sectional study. Participants: Eight hundred ninety-six eyes in 450 patients from 21 to 66 years of age. Main Outcome Measures: Central corneal thickness and its correlation to intraocular pressure, corneal curvature, axial length, horizontal corneal diameter, refraction, age, and gender. Results: The mean central corneal thickness was 550 μm with a standard deviation of 33 and a range of 472 to 651 μm. The lower 25th quantile was 528 μm. The central corneal pachymetry correlated with the mean manual keratometric measurement (P = 0.0001), simulated keratometry (Sim K) (P = 0.0001), and intraocular pressure (P = 0.0001). Central corneal thickness did not correlate with axial length, age, gender, horizontal corneal diameter, and refraction. Conclusion: This clinical study shows there is a substantial range of central corneal thickness in normal myopic eyes. With LASIK, there is a general concern that one should not thin the cornea further than a given amount. Because this study shows wide variability in central corneal thickness, it is prudent to measure pachymetry before surgery and gear treatment plans accordingly. Possible treatment limits relative to corneal thickness are discussed.

Original languageEnglish
Pages (from-to)2216-2220
Number of pages5
JournalOphthalmology
Volume106
Issue number11
StatePublished - Nov 1 1999

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Corneal Pachymetry
Laser In Situ Keratomileusis
Intraocular Pressure
Astigmatism
Myopia
Ultrasonics
Cornea
Cross-Sectional Studies
Outcome Assessment (Health Care)
Therapeutics

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Price, F. W., Koller, D. L., & Price, M. O. (1999). Central corneal pachymetry in patients undergoing laser in situ keratomileusis. Ophthalmology, 106(11), 2216-2220.

Central corneal pachymetry in patients undergoing laser in situ keratomileusis. / Price, Francis W.; Koller, Daniel L.; Price, Marianne O.

In: Ophthalmology, Vol. 106, No. 11, 01.11.1999, p. 2216-2220.

Research output: Contribution to journalArticle

Price, FW, Koller, DL & Price, MO 1999, 'Central corneal pachymetry in patients undergoing laser in situ keratomileusis', Ophthalmology, vol. 106, no. 11, pp. 2216-2220.
Price FW, Koller DL, Price MO. Central corneal pachymetry in patients undergoing laser in situ keratomileusis. Ophthalmology. 1999 Nov 1;106(11):2216-2220.
Price, Francis W. ; Koller, Daniel L. ; Price, Marianne O. / Central corneal pachymetry in patients undergoing laser in situ keratomileusis. In: Ophthalmology. 1999 ; Vol. 106, No. 11. pp. 2216-2220.
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