Anterior Corneal Curvature and Aberration Changes After Scleral Lens Wear in Keratoconus Patients With and Without Ring Segments

Eye & Contact Lens
Maria Serramito-BlancoGonzalo Carracedo

Abstract

To evaluate changes in the anterior corneal curvature and aberrometry after scleral contact lens wear in keratoconus (KC) subjects with and without intracorneal ring segments (ICRS). Twenty-six subjects diagnosed with keratoconus were selected to participate in the study. Subjects were divided into 2 groups, those with ICRS (KC-ICRS group) and those without ICRS (KC group). Subjects were instructed to wear 16.5-mm scleral lenses for 8 hours. Topographic and aberrometric parameters were evaluated before lens wear and immediately after lens removal. Anterior corneal curvature was evaluated at corneal diameters of 2, 4, 6, and 8 mm, and corneal aberrations were measured at 4-, 6-, and 8-mm pupil diameters. The mean age of subjects was 36.95±8.95 years. In KC group, there was a statistically significant flattening of the central corneal curvature, from 6.98 to 7.09 mm (P<0.05). No changes were found in the central corneal curvature in the KC-ICRS group. The KC group showed anterior corneal curvature flattening, mainly in the nasal quadrant. The KC-ICRS group showed flattening primarily in the inferior hemisphere. In the KC group, spherical aberration for 6-mm pupil increased significantly. In the KC-ICRS group, changes in aberratio...Continue Reading

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Citations

May 22, 2020·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Mukesh KumarStephen J Vincent
Jul 25, 2020·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Alejandra ConsejoStephen J Vincent
Jun 13, 2020·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Stefaan Van NuffelElke O Kreps
Jun 4, 2020·Current Opinion in Ophthalmology·Kyeong Hwan Kim, Shahzad I Mian
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Melissa BarnettPhilip B Morgan
Mar 30, 2021·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Deborah S JacobsFiona Stapleton

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