Evaluation of Phakic Posterior Chamber Intraocular Implantable Contact Lens for High Myopia

Purpose: To evaluate efficacy, predictability and safety of the surgical correction of high myopia using the phakic posterior chamber implantable collamer lens. Design: A prospective, nonrandomized, non-comparative interventional case series. Participants: Twenty seven eyes of fifteen patients aged from 20 to 46 years having high myopia were included. Intervention: STAAR modified collamer implantable contact lenses (version 4) were implanted for correction of high myopia. Main Outcome Measures: Uncorrected visual acuity (UCVA) best-corrected visual acuity (BCVA), intraocular pressure, lens opacity analysis, postoperative inflammation and distance between the ICL and crystalline lens assessed at slit-lamp and other postoperative complications. Results: The mean postoperative spherical equivalent (SE) was -0.629±0.98 D (range -2.25 to +1.25) for 27 eyes with mean preoperative SE -16.667 ±3.43 D (range 10-22 D). 74.07% of eyes had SE ± 1.00 D. The mean postoperative UCVA was 0.58+0.22 Snellen decimal visual acuity (from 0.2-1.00 Snellen visual acuity). 25.9% had IOP >21 mmHg at 1 month interval. 11.11 % had lens opacity with 3.7% having significant lens opacity requiring surgery. Conclusion: The implantation of modified collamer posterior chamber implantable contact lenses for high myopia shows adequate safety, predictability and stability. The main concerns over potential cataract formation and changing anterior segment dimensions still exist and needs long term follow-up. No financial disclosure of author in STAAR ICL.