Abstract | PURPOSE: To assess the effect of corneal astigmatism on intraocular pressure (IOP) measurements using an Ocular Response Analyzer (ORA) and a Goldmann applanation tonometer ( GAT). METHODS: We prospectively examined 59 normal eyes of 59 healthy volunteers (18 men, 41 women; age, mean +/- standard deviation, 40.5 +/- 14.2 years; age range, 19-68 years). We quantitatively assessed the values of corneal-compensated intraocular pressure (IOPcc) and Goldmann-correlated intraocular pressure ( IOP(G)) using an ORA (Reichert Ophthalmic Instruments). We also measured the IOP using a GAT ( GAT-IOP). The amount of corneal astigmatism was assessed with an autokeratometer. We carried out these measurements three times, and the mean value obtained was used for statistical analysis. RESULTS: The mean IOPcc, IOP(G), and GAT-IOP were 14.7 +/- 2.6, 14.0 +/- 2.8, and 14.2 +/- 1.7 mmHg respectively. The mean corneal astigmatism was 0.94 +/- 0.55 D. We found no significant correlation between IOPcc and corneal astigmatism (Pearson's correlation coefficient r = -0.04, p = 0.79), or between IOP(G) and corneal astigmatism (r = 0.09, p = 0.52). However, we found a weak, but significant, correlation between GAT-IOP and corneal astigmatism (Pearson's correlation coefficient r = 0.34, p = 0.009). CONCLUSIONS:
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Authors | Mana Hagishima, Kazutaka Kamiya, Fusako Fujimura, Tetsuya Morita, Nobuyuki Shoji, Kimiya Shimizu |
Journal | Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie
(Graefes Arch Clin Exp Ophthalmol)
Vol. 248
Issue 2
Pg. 257-62
(Feb 2010)
ISSN: 1435-702X [Electronic] Germany |
PMID | 19787365
(Publication Type: Clinical Trial, Journal Article)
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Topics |
- Adult
- Aged
- Astigmatism
(diagnosis)
- Corneal Diseases
(diagnosis)
- Female
- Humans
- Intraocular Pressure
- Male
- Middle Aged
- Prospective Studies
- Severity of Illness Index
- Tonometry, Ocular
(instrumentation, methods)
- Young Adult
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