title: Exchange of a posterior chamber phakic intraocular lens in a highly myopic eye.
abstract: A 38-year-old woman had posterior chamber phakic intraocular lens (IOL) implantation as a secondary refractive procedure to correct residual refraction (20/50 with -16.50 -1.50 x 80) in May 1998, 3 years after intrastromal corneal ring segment surgery for high myopia (-30.00 diopters). Ultrasound biomicroscopy revealed an oversized lens, leading to malpositioning. Moreover, the patient remained undercorrected (20/40 with -5.25 -0.75 x 120). Ten months later, the phakic IOL was uneventfully exchanged for a shorter one with the correct dioptric power. It was well placed in the posterior chamber. The patient's visual acuity was 20/30 with -2.25 -0.75 x 145, very close to the refraction in the fellow aphakic eye (20/30 with -2.50 -0.75 x 75). Patient satisfaction with the final visual outcome was high. Accurate ciliary sulcus measurement is critical for proper phakic IOL sizing.
authors.affiliation: São Geraldo Eye Hospital, Federal University of Minas Gerais, Belo Horizonte, Brazil. fct@gold.com.br
authors.forename: F
authors.initials: F
authors.lastname: Trindade
authors.forename: F
authors.initials: F
authors.lastname: Pereira
mesh_terms: D000328:Adult; D000869:Anterior Eye Segment / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007908:Lens, Crystalline; D009216:Myopia / Q000000981:diagnostic imaging / Q000601:surgery*; D017060:Patient Satisfaction; D012086:Reoperation; D014463:Ultrasonography; D014792:Visual Acuity