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Implantable collamer lens
Cataract & Refractive Surgery
Key Points
- •The ICL is the most widely implanted phakic IOL worldwide - over 4 million implantations; made of biocompatible Collamer (collagen + HEMA)
- •The EVO ICL (V4c) has a central 0.36 mm KS-AquaPORT that allows aqueous flow, eliminating the need for peripheral iridotomy and reducing cataract risk
- •Vault (250–750 µm) is the single most critical post-operative parameter - measured by anterior segment OCT; low vault → cataract, high vault → glaucoma
- •ICL sizing is based on sulcus-to-sulcus (STS) distance measured by UBM or AS-OCT - correct sizing determines vault and outcomes
- •Major advantage over LASIK: reversibility (ICL can be removed), no corneal tissue removal, preserved accommodation, no dry eye, and superior optical quality for high myopia
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- Definition
- Epidemiology
- Aetiology and causes
- Pathogenesis
- Classification
- Risk factors and associations