title: A new biaspheric contact lens for severe astigmatism following penetrating keratoplasty.
abstract: We conducted a study of 26 consecutive post penetrating keratoplasty patients (32 eyes) fit with a Boston Envision biaspheric rigid gas permeable contact lens with limited parameters. The lens was successfully worn by 81% of those fit. Eighty-nine percent of patients' eyes had visual acuity equal to or better than their best possible spectacle acuity, and lens related complications were minimal.
authors.affiliation: Department of Ophthalmology, University of Maryland Medical School, Baltimore.
authors.forename: B M
authors.initials: BM
authors.lastname: Weiner
authors.forename: V S
authors.initials: VS
authors.lastname: Nirankari
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001251:Astigmatism / Q000209:etiology / Q000628:therapy*; D003261:Contact Lenses; D003315:Cornea / Q000502:physiology; D003316:Corneal Diseases / Q000601:surgery; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D015948:Keratoplasty, Penetrating / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011446:Prospective Studies; D014792:Visual Acuity