Publication: Visual outcome in Keratoconus with spherical rigid gas permeable contact lens
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Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Medicine
Abstract
Abstract
Introduction: Keratoconus is a bileteral asymetric progressive ecteria of cornea commonly associated with vernal keratoconjunctivitis and Atopic dermatitis. Rigid gas permeable (RGP) contact lens is the first choice for refractive correction in keratoconic eyes. The visual outcome in Keratoconus with spherical RGP contact lens along with the mean age of presentation, gender predominance, ethnicity, associated conditions, refractive error and corneal astigmatism was evaluated.
Methods: The records of the Keratoconus patients attending cornea and contact lens clinic for last 6 years were reviewed and analyzed using SPSS-14 software. Data on laterality, race, age, gender, refractive error, visual acuity (VA), associated conditions and contact lens parameters were obtained. A total of 22 patients with 38 keratoconic eyes were included in the study.
Results: The mean age of Keratoconus presentation was 18.11 ± 4.45 years. Sixteen cases (72.73 %) were bilateral; 6 (27.27 %) were unilateral. Mean uncorrected visual acuity (UCVA) was 0.86 ± 0.40 Log MAR. Mean spectacle visual acuity was 0.54 ± 0.38 Log MAR. Mean visual acuity with spherical RGP contact lenses was 0.08 ± 0.14 Log MAR. The difference between mean spectacle visual acuity and mean VA with spherical RGP contact lens was statistically significant (p < 0.001).
Conclusion: In all stages of Keratoconus, improvement in visual acuity with spherical RGP contact lens was highly significant.
Key words: Contact Lenses, Keratoconus, Visual Acuity
Description
Chaudhary M1, Kandel H 2, Adhikari P3
1MD, Associate Professor, B. P. Koirala Lions Center for ophthalmic Studies, Institute of Medicine, Maharajgunj Medical Campus, Kathmandu, Nepal
2MSc PHEC, Optometry, Flinders University, Adelaide, Australia
3PhD, Queensland University of Technology, Brisbane, Australi
Keywords
Contact Lenses, Keratoconus, Visual Acuity