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

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Serramito Blanco, María y Carpena Torres, Carlos y Carballo Álvarez, Jesús y Piñero, David Pablo y Lipson, Michael y 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

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




Resumen

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.


Tipo de documento:Artículo
Información Adicional:

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

Palabras clave:Scleral lenses; Keratoconus; Corneal curvature; Corneal aberrations; Anterior chamber; Corneal thickness
Materias:Ciencias Biomédicas > Medicina > Oftalmología
Ciencias Biomédicas > Óptica y optometría > Lentes de contacto
Ciencias Biomédicas > Óptica y optometría > Óptica oftálmica
Código ID:48440
Depositado:19 Jul 2018 07:39
Última Modificación:19 Jul 2018 07:39

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