Document Detail

Effect of corneal curvature and corneal thickness on the assessment of intraocular pressure using noncontact tonometry in patients after myopic LASIK surgery.
MedLine Citation:
PMID:  16331036     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate the effect of corneal curvature and corneal thickness on the assessment of intraocular pressure (IOP) using noncontact tonometry (NCT) in patients after myopic LASIK surgery. METHODS: All patients who had myopic LASIK in a university-based eye clinic between February 2002 and May 2002 were retrospectively analyzed. Preoperative NCT was compared with postoperative NCT, postoperative corneal thickness, and postoperative corneal curvature. RESULTS: The difference between the mean preoperative NCT (15.46 +/- 2.50 mm Hg) and postoperative NCT (6.30 +/- 1.57 mm Hg) was significant (9.16 +/- 1.96 mm Hg, P < 0.010). Preoperative NCT significantly correlated with postoperative NCT (P < 0.001), postoperative corneal thickness (P = 0.006), and postoperative anterior corneal curvature (P < 0.010). CONCLUSIONS: Both corneal thickness and anterior corneal curvature affect IOP assessment in patients with myopic LASIK. Although correction formulas can be used to estimate the actual IOP, alternative methods should be investigated to assess IOP independent of corneal thickness and curvature.
Arthur C K Cheng; Dorothy Fan; Emily Tang; Dennis S C Lam
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cornea     Volume:  25     ISSN:  0277-3740     ISO Abbreviation:  Cornea     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2005-12-06     Completed Date:  2006-02-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8216186     Medline TA:  Cornea     Country:  United States    
Other Details:
Languages:  eng     Pagination:  26-8     Citation Subset:  IM    
Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, University Eye Center, Hong Kong Eye Hospital, 147K Argyle Street, People's Republic of China.
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MeSH Terms
Body Weights and Measures
Cornea / pathology*,  surgery,  ultrasonography
Intraocular Pressure / physiology*
Keratomileusis, Laser In Situ*
Middle Aged
Myopia / surgery*
Postoperative Period
Retrospective Studies
Tonometry, Ocular*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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