Corneal biomechanical changes following toric soft contact lens wear

Radaie-Moghadam, S. and Hashemi, H. and Jafarzadehpur, E. and Yekta, A. A. and KhabazKhoob, M. (2016) Corneal biomechanical changes following toric soft contact lens wear. Journal of Ophthalmic and Vision Research, 11 (2). pp. 131-135.

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Abstract

Purpose: To determine the effect of using toric soft contact lenses on corneal biomechanical properties. Methods: We enrolled 33 healthy patients with mean age of 23.18 ± 4.06 and minimal cylinder power of 1 D (-1.98 ± 0.808 SD) and negative history of contact lens use; keratoconic patients were excluded from the study. Toric soft contact lenses (BIOFINITY, Comfilcon A, Coopervision, Southampton, UK) were fitted in all participants. The Ocular Response Analyzer (Reichert Ophthalmic Instruments, Depew, New York, USA) was used to measure corneal hysteresis (CH), corneal resistance factor (CRF), and the Pentacam HR (Oculus, Inc., Lynnwood, WA, USA) was used to measure central corneal thickness (CCT) and mean keratometry (K mean) before and one week, one month, and three months after using the toric soft contact lenses. Results: CH and CRF were decreased significantly one month after using the contact lens; mean CH decreased from 9.99 ± 1.44 to 9.59 ± 1.54 mmHg, and mean CRF decreased from 9.96 ± 1.71 to 9.63 ± 1.73 mmHg (P = 0.013 and P = 0.017, respectively). Mean CCT and K mean did not show a significant change during the period of toric soft contact lens use. Conclusion: CH and CRF decreased significantly one month after fitting toric soft contact lenses while CCT and K mean did not change significantly. Corneal biomechanical parameters may alter with toric soft contact lens use and such changes may have implications with long-term use such lenses. © 2016 Journal of Ophthalmic and Vision Research.

Item Type: Article
Additional Information: Cited By :2 Export Date: 16 February 2020 Correspondence Address: Jafarzadehpur, E.; Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, No. 96, Esfandiar Blvd., Valiasr Street, Iran; email: jafarzadehpour.e@iums.ac.ir
Uncontrolled Keywords: Corneal Hysteresis Corneal Resistance Factor Toric Soft Contact Lens
Subjects: WW Ophthalmology
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib4 lib4
Date Deposited: 01 Mar 2020 05:34
Last Modified: 01 Mar 2020 05:34
URI: http://eprints.mums.ac.ir/id/eprint/13147

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