Effects of Multicurve RGP Contact Lens Use on Topographic Changes in Keratoconus.
10.3341/kjo.2010.24.4.201
- Author:
Joon Seo HWANG
1
;
Jin Hak LEE
;
Won Ryang WEE
;
Mee Kum KIM
Author Information
1. Department of Ophthalmology, Haenam Genenral Hospital, Jeonnam, Korea.
- Publication Type:Original Article ; Comparative Study
- Keywords:
Contact lenses;
Cornea;
Corneal topography;
Keratoconus
- MeSH:
Adult;
Astigmatism/etiology/pathology/therapy;
*Contact Lenses;
Cornea/*pathology;
*Corneal Topography;
Disease Progression;
Female;
Follow-Up Studies;
Humans;
Keratoconus/complications/pathology/*therapy;
Male;
Prognosis;
Prosthesis Design;
Retrospective Studies;
Time Factors;
Young Adult
- From:Korean Journal of Ophthalmology
2010;24(4):201-206
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: To evaluate the effects of wearing rigid gas permeable (RGP) contact lenses on the topographic changes in keratoconus. METHODS: Seventy-seven keratoconic eyes that wore multicurve RGP contact lenses and 30 keratoconic eyes that wore no contact lenses were retrospectively analyzed. The mean follow-ups were 22.6 and 20.5 months in the lens-wearing and control groups, respectively. Visual acuity, comfort, daily wearing time, and corneal staining were evaluated for both groups. The changes in topographic indices were compared between the lens-wearing and control groups. RESULTS: Multicurve RGP lens corrected logarithm of the minimum angle of resolution visual acuity of the lens-wearing group significantly improved from -0.016+/-0.065 to -0.032+/-0.10 at follow-up (p=0.05). In the lens-wearing group with advanced keratoconus, the Sim Kmax, Sim Kmin, apical power, astigmatic index, and anterior elevation significantly decreased from 57.68+/-4.26 diopter (D), 50.50+/-2.32 D, 62.79+/-5.11 D, 7.20+/-0.55 D and 67.36+/-16.30 microm to 55.51+/-4.28 D, 49.62+/-3.26 D, 60.31+/-5.41 D, 5.90+/-0.51 D and 60.61+/-16.09 microm, respectively (paired t-test, p<0.05). The irregularity index of 3 mm did not significantly change. Meanwhile, in the control group, the apical power and irregularity index increased from 55.56+/-7.25 D and 3.06+/-1.68 D to 57.11+/-7.75 D and 3.25+/-1.71 D, respectively (paired t-test, p=0.008, p=0.01). CONCLUSIONS: Properly fitted multicurve RGP contact lenses are not likely to contribute to the progression of keratoconus.
