Riboflavin-UVA corneal collagen cross-linking (CXL) and flat fitting RGP lens in progressive keratoconus
- Details
- Category: #1 (01) 2015
- Published: Monday, 30 November 2015 00:18
- Written by Super User
- Hits: 2831
Mokbel T., Samra W.A.
Mansoura University, Mansoura, Egypt
SUMMARY
Aim. To еvаluаtе the safety, efficacy and possible additive role of flat fitting RGP lens following riboflavin-UVA corneal collagen cross-linking (CXL) in management of progressive keratoconus.
Subject and Method. Prospective comparative study of 30 eyes without RGP lens and 34 eyes fitted with RGP lens with apical bearing (flat fitting) from 2 to 10 weeks postCXL. None of the patients had been wearing contact lens (CL) before CXL. The effect of the CXL without and with RGP lens was measured by the change from the baseline of best spectacle corrected visual acuity (BSCVA), refractive sphere and cylinder, maximal keratometry value (Kmax), simulated keratometry, astigmatism and I-S value. The results of these measurements are reported pre-CXL and at 6-month intervals up to 24 months post-CXL.
Result. In the eyes without CL, none of the study parameters showed a significant change from baseline. Only in the group of eyes fitted with CL post-CXL, several parameters showed a significant improvement: refractive cylinder, I-S value, Kmax, simulated keratometry and astigmatism.
Conclusion. RGP lens with flat fitting can be a safe additive factor in improvement of topographical parameters following CXL.
Keywords: cornea, keratoconus, keratometry, contact lens, collagen cross-linking, dinamic.