Original Article

Evaluation of Corneal Biomechanical Properties Measured By Ocular Response Analyzer in Cases with Rheumatoid Arthritis


  • Hasan Altinkaynak
  • Necip Kara
  • Ökkes Baz
  • Yonca Çagatay Çelik
  • Ercüment Bozkurt
  • Ahmet Taylan Yazici
  • Ahmet Demirok

Received Date: 12.12.2010 Accepted Date: 08.02.2011 Turk J Ophthalmol 2011;41(3):167-170


To compare the corneal biomechanical properties using an ocular response analyzer (ORA) in patients with rheumatoid arthritis and healthy control subjects.

Material and Method:

Thirty four eyes of 17 healthy individuals (control group) and 34 eyes of 17 patients with RA (study group) were recruited. ORA measurements were performed in all patients. Corneal-compensated intraocular pressure (IOPcc), Goldman related intraocular pressure (IOPg), corneal resistance factor (CRF), and corneal hysteresis (CH) were recorded. Statistical analyses were performed using a t test for independent samples.


In the study group, mean CH was 11.5±2.1 (7.7-16.2) mmHg, mean CRF was 12.1±2.3 (8.2-17) mmHg, IOPg 17.2±4.4 (8.3-25.1) and mean IOPcc was 16.5±4.3 (7.7-24.2) mmHg. In the control group, mean CH was 11.6±1.1 (9.7-13.8) mmHg, mean CRF was (11.8±1.2 (9.8-14.1) mmHg, IOPg 15.9±3.3 (9.4-25.7), and mean IOPcc was 15.4±2.6 (8.8-21.2) mmHg. There were no significant differences in these parameters between the study and control groups (p>0.05).


The biomechanical parameters measured with ORA were not statistical difference in patients with rheumatoid arthritis and age matched healthy individuals. (Turk J Ophthalmol 2011; 41: 167-70)

Keywords: Rheumatoid arthritis, Ocular response analyzer, Corneal hysteresis

Full Text (Turkish)