Background/aims: A prospective study evaluating the impact of ICRS implantation on the quality of life of patients with keratoconus using the NEI-RQL (National Eye Institute Refractive Error Quality of life) instrument.
Methods: Sixty-nine eyes of 42 keratoconus patients were implanted with the Keraring (Mediphacos, Belo Horizonte, Brazil). All patients self-administered the NEI-RQL before and 4½ to 8 months after surgery. We evaluated and analysed the results, along with best spectacle-corrected visual acuity, refraction, contrast sensitivity, corneal topography and aberrometry.
Results: There was a significant improvement in all NEI-RQL scales and the overall scale. The greatest improvements were noted in “Clarity of vision”, “far vision”, “near vision”, “activity limitations”, “appearance” and “satisfaction with correction”, ranging from 25 to 50 preoperatively to 80 to 90 after surgery. BSCVA and binocular BSCVA improved significantly and there was a significant decrease in keratometric values, from 50.22D preoperatively to 46.27D postoperatively. Contrast sensitivity function improved postoperatively, especially at the frequency of 6 cpd. Low-order RMS improved after surgery, but high-order RMS did not.
Conclusion: ICRS implantation improves not only the quantitative metrics such as visual acuity and refraction, but also has a positive impact on patients’ quality of life.