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Toric ICL V4c® in the correction of myopia and astigmatism: efficacy, predictability and safety

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Session Details

Session Title: Posterior chamber Phakic IOLS for correction of Myopia

Session Date/Time: Monday 15/09/2014 | 08:00-10:30

Paper Time: 08:47

Venue: Capital Hall B

First Author: : R.Massa PORTUGAL

Co Author(s): :    I. Casal   M. Lume   R. Salgado   M. Brochado     

Abstract Details


To analyze the efficacy, predictability and safety of a posterior chamber phakic intraocular lens -Toric ICL v4c®- in patients with moderate to high myopia and astigmatism.


Ophthalmology Department of Centro Hospitalar do Porto – Hospital de Santo António in Oporto, Portugal.


We reviewed the clinical files including ophthalmological evaluations complemented with ancillary exams such as Orbscan®, Pentacam ®, specular miscroscopy and ultrasound biomicroscopy of 15 patients (19 eyes) who underwent an implantation of a Toric ICL v4c®. The mean age was 32.4 +/- 5.6 years (varying from 24 to 41 years old). Mean horizontal corneal diameter evaluated by Orbscan® was 11.85 mm (varying from 11.4 to 12.8 mm) and mean anterior chamber depth was 3.12 +/-0.28mm. Emmetropia was the target postoperative spherical equivalent refraction. Mean “follow-up” was 12 months (varying from 4 to 20 months). Statistical analysis was performed with SPSS version 20.0.


Mean preoperative intraocular pressure (IOP) was 12+/-2 mmHg with an increase of 0.08+/-0.30 mmHg postoperatively (p=0.23).Mean preoperative endotelial cell count was 2969 cells/mm2 (from 2398 to 3731 cells/mm2) with a reduction of 170+/-70 cells/mm2 postoperatively (p=0.10). Mean of preoperative best corrected visual acuity (BCVA) was 0.21 +/- 0.19 log MAR with an increase to a mean postoperative BCVA of 0.11+/-0.12 logMAR (p=0.00) Mean preoperative astigmatism was -2.47+/-0.87 D with a decrease to -0.58+/-0.74 D postoperatively (p=0.00). Mean preoperative spherical equivalent was -9.37 +/- 4.21 D and decreased to -0.26+/-0.48 D (p=0.00) postoperatively with 60% of eyes within +/-0.50D of emmetropia. Mean preoperative anterior chamber angle was 36.3+/-3.05° (varying from 29.3 to 41.4°) with a change to 23.9+/-4.12° (from 18.8 to 32.4°) postoperatively (p=0.00). Mean vault was 295 +/-154 µm (from 100 to 500 µm). Complications such as ocular hypertension/glaucoma and cataract were not verified in these patients.


Posterior chamber phakic lens Toric ICL v4c is effective , predictable and safe in the correction of moderate to high myopia and astigmatism. Developments in the determination of its size may already improve its characteristics.

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