Ocular Biometry and Cornea Biomechanics in Hypermetropic Anisometropia

• Published in: Türk Oftalmoloji Dergisi
• Main Authors: Ebru Demet Aygıt, Zeynep Alkın, Birsen Gökyiğit, Hülya Güngel, Ahmet Demirok
• Format: Article
• Language: English
• Published: Turkish Ophthalmology Society 2014-01-01
• Subjects: Hypermetropia; anisometropic ambliyopia; ocular response analyzer; ocular biometry; corneal biomechanical properties
• Online Access: http://www.oftalmoloji.org/article_2350/Ocular-Biometry-And-Cornea-Biomechanics-In-Hypermetropic-Anisometropia
• ISSN: 1300-0659; 2147-2661

Objectives: To evaluate ocular biometric parameters including anterior chamber depth (ACD), corneal curvature (CC), central corneal thickness (CCT), horizontal corneal diameter, and corneal biomechanical properties using ocular response analyzer (ORA) in eyes with hypermetropic anisometropia and to compare the results with those obtained for the healthy eyes of the patients. Materials and Methods: Sixty-four eyes of 32 patients followed with the diagnosis of hypermetropic anisometropia-related ambliyopia were included in the study. Group 1 (n=32) consisted of eyes with hypermetropic anisometropia, and group 2 (n=32) consisted of healthy eyes of the same patients. Cycloplegic refraction, best-corrected visual acuity (BCVA), corneal topography, axial length (AL) measurement, biomicroscopy, and fundus examinations were performed. Corneal hysteresis (CH), corneal resistance factor (CRF), and Goldmann-correlated intraocular pressure (IOPg) measurements were recorded. Results: Mean age of the patients was 9.5±2.4; 13 were male and 19 were female. Mean spherical equivalent was +5.42±1.8 D and +1.9±1.28 D in group 1 and group 2, respectively (p<0.001). Mean AL was 21.6±1.1 mm in group 1 and 22.6±0.9 mm in group 2 (p<0.001). No statistical difference was found between the groups in terms of ocular biometric parameters except AL such CCT, CC, ACD, horizontal corneal diameter and ORA measurements including CH, CRF, and GIBg (respectively, p=0.87, p=0.27, p=0.22, p=0.81, p=0.75, p=0.69, p=0.13). Conclusion: No difference was found between hypermetropic anisometropic and healthy eyes regarding ocular biometric parameters and corneal biomechanical properties. (Turk J Ophthalmol 2014; 44: 23-6)