Comparison of iris-claw and posterior chamber collagen copolymer phakic intraocular lenses in keratoconus
| Autor: | Fidan Abdulla G, Jorge L. Alió, Pablo Peña-García, Ghassan Zein, Sabat K Abu-Mustafa |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Keratoconus Phakic Intraocular Lenses genetic structures Visual Acuity Iris Spherical equivalent Phakic intraocular lens Refraction Ocular Young Adult Lens Implantation Intraocular Ophthalmology Medicine Humans Phakic iol Iris claw Dioptre Retrospective Studies Implantable collamer lens medicine.diagnostic_test business.industry Corneal Topography Middle Aged Corneal topography medicine.disease eye diseases Sensory Systems Treatment Outcome Optometry Surgery Female sense organs business |
| Zdroj: | Journal of cataract and refractive surgery. 40(3) |
| ISSN: | 1873-4502 |
| Popis: | To evaluate the visual and refractive outcomes, predictability, and stability of phakic intraocular lens (pIOL) implantation in keratoconic eyes and compare the results of 2 pIOL models.Vissum Instituto Oftalmologico, Alicante, Spain.Retrospective case series.An iris-claw (Artiflex) or collagen copolymer posterior chamber pIOL (PC pIOL) (Implantable Collamer Lens) was implanted in eyes with stable keratoconus. The main outcome measures were postoperative changes from the preoperative manifest refraction, uncorrected (UDVA) and corrected (CDVA) distance visual acuities, corneal topography, and endothelial cell count. Alpins vectorial analysis was performed.Twenty eyes received an iris-claw pIOL and 28 eyes, a PC pIOL. The mean spherical equivalent was -9.31 diopters (D) ± 4.20 (SD) (range -20.75 to -2.75) preoperatively and -0.46 ± 0.88 D (range -3.25 to 1.00 D) postoperatively (P.001). No patient lost lines of CDVA. The mean decimal UDVA was 0.08 ± 0.09 preoperatively and 0.71 ± 0.26 postoperatively and the mean decimal CDVA, 0.77 ± 0.24 and 0.87 ± 0.98, respectively (P.001). The mean efficacy index was 0.90 ± 0.26 and the mean safety index, 1.19 ± 0.29. The mean efficacy index was not statistically different between the PC pIOL (0.88 ± 0.28) and the iris-claw pIOL (0.96 ± 0.22) (P=.058). Refraction was stable during the follow-up.Phakic IOL implantation is a suitable refractive surgical option for stable keratoconus. It may be especially indicated for the management of high ametropia and showed good efficacy and safety. Refractive and keratometric stability was confirmed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|