title: Irregular Corneas: Improve Visual Function With Scleral Contact Lenses.
abstract: OBJECTIVE
  To assess visual function in patients with irregular cornea who do not tolerate gas permeable (GP) corneal contact lenses and are fitted with GP scleral contact lenses (Rose K2 XL).
  
  
  METHODS
  In this prospective study, we analyzed 15 eyes of 15 patients who did not tolerate GP corneal contact lenses and were fitted with scleral contact lenses (Rose K2 XL). We assessed visual function using visual acuity and the visual function index (VF-14); we used the VF-14 as an indicator of patient satisfaction. The measurements were taken with the optical correction used before and 1 month after the fitting of the Rose K2 XL contact lenses. We also recorded the number of hours lenses had been worn over the first month.
  
  
  RESULTS
  Using Rose K2 XL contact lenses, visual acuity was 0.06±0.07 logMAR. In all cases, visual acuity had improved compared with the measurement before fitting the lenses (0.31±0.18 logMAR; P=0.001). VF-14 scores were 72.74±12.38 before fitting of the scleral lenses, and 89.31±10.87 after 1 month of lens use (P=0.003). Patients used these scleral lenses for 9.33±2.99 comfortable hours of wear.
  
  
  CONCLUSIONS
  Both visual acuity and VF-14 may improve after fitting Rose K2 XL contact lenses in patients with irregular corneas. In addition, in our patients, these lenses can be worn for a longer period than GP corneal contact lenses.
authors: Cruces University Hospital, Barakaldo, Spain.
authors: Beatriz
authors: B
authors: de Luis Eguileor
authors: Jaime
authors: J
authors: Etxebarria Ecenarro
authors: Alaitz
authors: A
authors: Santamaria Carro
authors: Raquel
authors: R
authors: Feijoo Lera
mesh_terms: D000328:Adult; D000368:Aged; D003261:Contact Lenses; D005260:Female; D006801:Humans; D007640:Keratoconus / Q000150:complications*; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011446:Prospective Studies; D012030:Refractive Errors / Q000209:etiology / Q000503:physiopathology / Q000534:rehabilitation*; D012590:Sclera; D014792:Visual Acuity / Q000502:physiology