A New Fitting Approach for Providing Adequate Comfort and Visual Performance in Keratoconus: Soft HydroCone (Toris K) Lenses

Eye & Contact Lens
Koray Gumus, Nisa Kahraman

Abstract

To evaluate the comfort and visual performance of soft HydroCone (Toris K) silicone hydrogel lenses in keratoconus patients. Fifty eyes of 50 keratoconic patients who were fitted with the Toris K lens were included in the study. All patients were evaluated at baseline and after 2 weeks of lens wear. Uncorrected and best-corrected visual acuities were measured. Corneal topography, ocular aberrations, and point spread function (PSF) were obtained using NIDEK-OPD Scan. Comfort level and visual performance in daytime and nighttime conditions were scored from 0 to 5 after 2 weeks of lens wear. Best-corrected visual acuity was significantly better with the Toris K lens (P<0.001). Mean increase in visual acuity with the lens was 4.5 lines. Mean K1, K2, and Kmax values significantly decreased with the lens (P<0.001). Both total and higher-order root-mean-square errors were significantly corrected with the Toris K lens (P<0.001 and P=0.038, respectively). A significant correction of total coma and trefoil aberrations was achieved with the lens. Also, PSF values were significantly increased with the lens (P<0.001). Although comfort scores in 46 eyes (92.0%) were classified as good/excellent, only 4 eyes (8.0%) had moderate comfort scores...Continue Reading

References

Jan 1, 1984·Survey of Ophthalmology·J H KrachmerM W Belin
Mar 11, 1998·Survey of Ophthalmology·Y S Rabinowitz
Jul 7, 1993·Current Opinion in Ophthalmology·Y S Rabinowitz
Jun 26, 2007·Journal of Cataract and Refractive Surgery·Aylin Ertan, Joseph Colin
Oct 24, 2007·American Journal of Ophthalmology·Kazuno NegishiKazuo Tsubota
Sep 10, 2008·Eye & Contact Lens·Loretta B Szczotka-Flynn, Shamil Patel
Dec 4, 2008·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Jason D MarsackRaymond A Applegate
Aug 18, 2010·Korean Journal of Ophthalmology : KJO·Joon Seo HwangMee Kum Kim
Oct 14, 2011·Cornea·Melissa Barnett, Mark J Mannis
Jan 25, 2012·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Amit JinabhaiClare O'Donnell
Dec 21, 2013·Eye·A E DavidsonS J Tuft
Oct 17, 2014·Eye & Contact Lens·Omür O Uçakhan, Betül Bayraktutar
Dec 9, 2014·American Journal of Ophthalmology·Vito RomanoLuigi Fontana
Jan 6, 2015·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Ye WuLongqian Liu

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Citations

Feb 13, 2018·Journal of Ophthalmology·L Rico-Del-ViejoA Lorente-Velázquez
Jul 3, 2019·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Amit Navin Jinabhai
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Deborah S JacobsFiona Stapleton

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