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Comparison of Corneal Biomechanical Properties Between the Two Eyes in Unilateral Exfoliation Syndrome Cases
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Original Article
VOLUME: 42 ISSUE: 4
P: 269-273
July 2012

Comparison of Corneal Biomechanical Properties Between the Two Eyes in Unilateral Exfoliation Syndrome Cases

Turk J Ophthalmol 2012;42(4):269-273
DOI: 10.4274/tjo.42.17894
Ali Bülent Çankaya
Alpaslan Anayol
Pelin Yılmazbaş
1. Ulucanlar Göz Egitim Ve Arastirma Hastanesi, Ankara, Türkiye
No information available.
No information available
Received Date: 13.11.2011
Accepted Date: 06.04.2012
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ABSTRACT

Pur­po­se:

To compare the differences in corneal biomechanical parameters between the eyes of patients with unilateral exfoliation syndrome (ES), bilateral ES and normal subjects.

Ma­te­ri­al and Met­hod:

Thirty patients with unilateral ES (Group A), 32 bilateral ES patients (Group B) and 49 healthy subjects (Group C) were included in this cross-sectional, non-interventional study. Corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated intraocular pressure (IOPcc) and Goldmann-correlated IOP (IOPg) were measured using Ocular Response Analyzer (ORA). Central corneal thickness (CCT) was measured with an ultrasonic pachymeter. The differences in ORA parameters between the eyes of the study and control group participants were analyzed.

Re­sults:

In unilateral ES patients, the mean CH values for eyes with and without exfoliation material were 8.6±2.1 mm Hg and 9.1±1.7 mm Hg, respectively (p=0.004). On the other hand, the differences in both mean CRF and CCT between the two eyes in unilateral ES cases were not statistically significant (p>0.05 for both comparisons). IOPcc was significantly higher in ES eyes than in non-ES eyes (19.3±2.9 mm Hg vs. 17.1±2.7 mm Hg) (p 0.05 for all comparisons).

Dis­cus­si­on:

In unilateral ES subjects, CH was found to be significantly lower in the eyes with exfoliation. Further studies are needed to establish the relationships between exfoliation, ocular biomechanics and glaucoma. (Turk J Ophthalmol 2012; 42: 269-73)