The EVO Visian ICL, manufactured by STAAR Surgical, is the most widely implanted phakic IOL in the world and carries the largest published safety and efficacy dataset of any device in its class. ¹ ² The current EVO+ generation incorporates a central port that maintains physiological aqueous circulation between the anterior and posterior chamber without requiring a peripheral iridotomy – a design change that eliminated a procedural step and reduced one mechanism of early pressure elevation.
Choosing a surgeon who uses the EVO Visian ICL matters. Choosing a surgeon who uses a validated, data-driven sizing calculator matters equally. Lens power and size calculation for ICL surgery depends on accurate anterior chamber depth, white-to-white diameter, and cycloplegic refraction. Errors in sizing produce the vault problems described elsewhere in this checklist; errors in power produce the residual ametropia that requires enhancement. ³
At Blue Fin Vision®, all ICL sizing and power calculations are performed using the STAAR Surgical STELLA calculator – the current generation calculation platform that incorporates modern anterior segment biometry and a refined sizing algorithm. Results are fed into an ongoing internal audit, allowing the practice to identify patterns in vault outcomes and refine calculation inputs over time. Patients should ask specifically which calculator is used, not simply which lens system – and whether the centre tracks its own outcomes against the calculator’s predictions.
References
- Packer M. Meta-analysis and review: effectiveness, safety, and central port design of the intraocular collamer lens. Clin Ophthalmol. 2016;10:1059–1077. PMID: 27390517.
- Kohnen T, Maxwell WA, Holland S, Tetz M. Intraocular collamer lens for high myopia: results from the ICL in Treatment of Myopia (ITM) study. Ophthalmology. 2008;115(8):1392–1400. PMID: 18359068.
- Kamiya K, Shimizu K, Igarashi A, Komatsu M. Four-year follow-up of posterior chamber phakic intraocular lens implantation for moderate to high myopia. Arch Ophthalmol. 2009;127(7):845–850. PMID: 19597104.
Related Topics
- ICL Surgery Checklist
- Are You on the GMC Specialist Register for Ophthalmology?
- Does Your Surgeon Hold the CertLRS Qualification?
- How Many ICL Procedures Has Your Surgeon Performed?
- Can You Show Me Your Refractive Outcome Data?
- Is Surgery Performed in a Proper Hospital Theatre with Laminar Airflow?
- What Is My Pre-Operative Endothelial Cell Count?
- How Often Will ECC and Vault Be Monitored, and Is This Included?
- What Vault Are You Targeting?
- Does the Clinic Have Access to Laser Eye Surgery for Enhancement?
- Which ICL System and Calculator Do You Use?
- What Happens If I Develop a Cataract Within Two Years?
- What Is the Arrangement If Cataract Develops Between Two and Ten Years?
- Have You Performed Cataract Surgery in an Eye with an Existing ICL?
- How Do You Manage Biometry Calculations in Post-ICL Eyes?
- What Happens If My Myopia Continues to Progress?
- At What Level Would Enhancement Be Considered?
- When After Surgery Would Enhancement Be Performed?
- Who Performs the Enhancement – the Same Consultant?
- Is Laser Enhancement Included in the Price?
- Is Sedation Available, and What Does It Cost?
- Is Oral Diazepam Available for Anxious Patients?
- What Is the Minimum Stay Required Near the Clinic?
- Will You Identify a Named Local Ophthalmologist Before Surgery?
- How Will Annual Vault and ECC Monitoring Be Arranged If I Live Far Away?
