The effect of soft contact lens thickness in visual function after intracorneal ring segments surgery

• Published in: Contact lens & anterior eye 2018-04, Vol.41 (2), p.180-186
• Main Authors: Carracedo, G., Canales, J., Gonzalez, P., Recchioni, A., Carpena-Torres, C., Carballo-Álvarez, J.
• Format: Article
• Language: English
• Subjects: Aberrometry; Adult; Contact lenses; Contact Lenses, Hydrophilic; Corneal Stroma - physiopathology; Corneal Stroma - surgery; Corneal Topography; Cross-Sectional Studies; Double-Blind Method; Female; Humans; Intracorneal rings; Keratoconus; Keratoconus - physiopathology; Keratoconus - surgery; Male; Middle Aged; Prospective Studies; Prostheses and Implants; Prosthesis Fitting; Prosthesis Implantation; Visual Acuity - physiology; Visual function; Young Adult
• ISSN: 1367-0484; 1476-5411
• DOI: 10.1016/j.clae.2017.09.020

•The soft contact lens thickness role in the visual function has never been studied.•More soft contact lens thickness improves visual quality after intrastromal rings.•The rigidity of the soft contact lenses do not influence the aberrations correction. To study the influence of soft contact lens (SCL) central thickness and material in keratoconus on visual function after intracorneal ring segment (ICRS) surgery. A pilot, experimental, prospective, cross-sectional and double-blind study was performed. Fourteen keratoconus patients with age range of 34.75±9.22years (7 males and 7 females) with ICRS implanted were involved in the study. Two different SCL materials [Hioxifilcon A (G-5X/p-GMA/HEMA) and Lucifilcon A (silicone-hydrogel)] with four different central thicknesses (0.1, 0.2, 0.3 and 0.4mm) were fitted in one eye per patient, selected randomly. High and low corrected distance visual acuity (CDVA) and contrast sensitivity (CS), corneal topography and corneal and total aberrometry were measured. Corneal spherical like, coma like and root mean square (RMS) decreased significantly for 0.3 and 0.4mm in both SCL materials (p