Universidad Complutense de Madrid
E-Prints Complutense

Posterior cornea and thickness changes after scleral lens wear in keratoconus patients

Impacto

Downloads

Downloads per month over past year

Serramito Blanco, María and Carpena Torres, Carlos and Carballo Álvarez, Jesús and Piñero, David Pablo and Lipson, Michael and Carracedo Rodríguez, Juan Gonzalo (2018) Posterior cornea and thickness changes after scleral lens wear in keratoconus patients. Contact Lens and Anterior Eye . ISSN 1367-0484

[img]
Preview
PDF (Postprint)
Creative Commons Attribution Non-commercial No Derivatives.

409kB

Official URL: https://doi.org/10.1016/j.clae.2018.04.200




Abstract

Purpose: To evaluate the changes in the corneal thickness, anterior chamber depth and posterior corneal curvature and aberrations after scleral lens wear in keratoconus patients with and without intrastromal corneal ring segments (ICRS).
Methods:Twenty-six keratoconus subjects (36.95 ± 8.95 years) were evaluated after 8 h of scleral lens wear. The subjects were divided into two groups: those with ICRS (ICRS group) and without ICRS (KC group). The study variables evaluated before and immediately after scleral lens wear included corneal thickness evaluated in different quadrants, posterior corneal curvature at 2, 4, 6 and 8 mm of corneal diameter, posterior corneal aberrations for 4, 6 and 8 mm of pupil size and anterior chamber depth.
Results: There was a statistically significant corneal thinning (p < 0.05) in the inferior region of the KC group and in the superior region of the ICRS group. No change (p > 0.05) in the anterior chamber depth was found. The KC group showed a steepening (p < 0.05) in the temporal quadrant and a flattening that mainly affected to the superior-nasal quadrant. The ICRS group showed a steepening (p < 0.05) that mainly affected to the superior-nasal quadrant. Regarding posterior corneal aberrations, only changes (p < 0.05) in Z4 for 8 mm and Z8 for 4 mm were found in the KC group.
Conclusions: Short-term scleral lens wear showed a thinning of the cornea and changes in the posterior corneal curvature affects different regions in keratoconus patients with and without ICRS.


Item Type:Article
Additional Information:

Corrected proof.
Received 20 December 2017, Revised 16 April 2018, Accepted 18 April 2018, Available online 1 May 2018.

Uncontrolled Keywords:Scleral lenses; Keratoconus; Corneal curvature; Corneal aberrations; Anterior chamber; Corneal thickness
Subjects:Medical sciences > Medicine > Ophtalmology
Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Visual perception
ID Code:48440
Deposited On:19 Jul 2018 07:39
Last Modified:01 May 2019 23:01

Origin of downloads

Repository Staff Only: item control page