کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2699140 | 1144140 | 2014 | 5 صفحه PDF | دانلود رایگان |

• Soft contact lenses are a viable option for good vision and comfort in a significant proportion of KeraRing ICRS implanted eyes.
• Piggy-back system is a good option for the eyes at the more advanced keratoconus stages after intracorneal ring segments implantation.
• After 1 month's wearing of each type of contact lens there were no significant effects produced on corneal surface integrity or on the topographic map in any of the eyes.
PurposeTo assess the feasibility of fitting a lathed soft toric contact lens (STCL) after the implant of intrastromal corneal ring segments (ICRSs) to treat keratoconus.MethodsSix months after ICRS implantation, 47 eyes of 47 patients (18–45 years) were fitted with a STCL. In each eye, we determined refractive error, uncorrected (UDVA) and corrected distance visual acuity (CDVA), and keratometry and asphericity measures. The outcome of STCL fitting was defined according to CDVA as successful (≤0.2 logMAR) or unsuccessful (>0.2 logMAR). Patients in the unsuccessful group were refitted with a piggy-back (PB) system. The above variables and the change in CDVA observed after STCL and PB lens fitting from spectacle CDVA were compared in the two groups.ResultsSTCL fitting was successful in 75%, 66.66% and 0% of the ICRS implanted eyes with stages I–III keratoconus, respectively. Spectacle-CDVA was 1.5 lines better and mean corneal power was 3.62D lower in the successful STCL group. In this group, the difference in cylinder axis between spectacles and STCL was 24.25° lower. PB refitting achieved a PB-CDVA ≤0.2 logMAR in all cases. A similar difference in the CDVA change achieved by contact lenses versus spectacles was observed in the successful STCL and PB refitted groups.ConclusionSTCL fitting is a feasible option in a large proportion of patients implanted with ICRS. When these lenses are unsatisfactory, a PB system is a good alternative.
Journal: Contact Lens and Anterior Eye - Volume 37, Issue 5, October 2014, Pages 377–381