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Intraocular pressure measurements values in patients who have had uneventful deep anterior lamellar keratoplasty
Author(s) -
DOMINIKA J,
WYLEGALA E
Publication year - 2009
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2009.3333.x
Subject(s) - ophthalmology , intraocular pressure , medicine , significant difference , goldmann applanation tonometer , mean difference , confidence interval
Purpose To effect of central corneal thickness (CCT) and graft site thickness ( GS) in patients who have had uneventful deep anterior lamellar keratoplasty (DALK) using “ big bubble” technique, on intraocular pressure (IOP) measurements, investigated using two different techniquesRetrospective cross sectional study from May 2008 to April 2009 on Ophthalmology Department of District Railway Hospital in Katowice, Poland. Methods Patients 40 after DALK, at least 12 months prior to testing. Control group: 30 patients. IOP was determined by Goldman applanation tonometer (GAT) and iCARE (IC) rebound tonometer. CCT and GS were assessed by Anterior Segment OCT (Visante OCT). Mean GAT and IC IOP were calculated for: DALK and control. Agreement between results from IC and GAT were assessed using the Bland‐Altman method. The deviations of IC readings from GAT, corrected for CCT were calculated using a linear regression model. Results In DALK mean CCT was 470.6 +/‐ 39 µm and in control 550.9 +/‐ 29 µm. Mean IOP +/‐ SD in DALK 16.5 +/‐11.1mmHg in control 16.7 +/‐ 4.2mmHg for IC. Mean IOP using GAT for studied group was 15.7 +/‐ 2.4mmHg and for control 13.2 +/‐ 2.6 mmHg. IC IOP was significant higher than GAT (P < .005). Difference between IOP and CCT and GS were not statistically significant (P = .53). Correlations between IOP and CCT were not significant in these cohorts (P > .09). Agreement between IC and GAT was assessed. Conclusion IOP measured by IC was consistently higher when compared with GAT, this difference was greatest with thicker CCT but not with thicker GS. Falsely underrated IOP in DALK was not demonstrated.