Implantable Collamer Lens - Morphological changes induced in the anterior segment

• Autores: Jose N. Galveia, Marta C. Guedes, Ana C. Almeida, Tiago B. Ferreira, Alberto Cardoso
• Localización: Journal of Emmetropia: Journal of Cataract, Refractive and Corneal Surgery, ISSN-e 2171-4703, Vol. 3, Nº. 3, 2012, págs. 147-151
• Idioma: inglés
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• Resumen

  • PURPOSE: To evaluate the changes induced in the anterior segment after implantation of a STAAR® Implantable Collamer® contact lens (ICL) and to develop mathematical models for predicting these changes.

    METHODS: Eighty-two eyes of 52 patients had implantation of an ICL at the Ophthalmology Department, Egas Moniz Hospital (Lisbon, Portugal). Patients were examined preoperatively and at months 1, 6, 12, 24 and 36 postoperatively. The anterior segment was evaluated using a Scheimpflug photography system.

    RESULTS: The mean vault values after the first month were 349.93 μm. They remained stable during the first 24 months of the follow-up period, with a slight tendency to decrease at 36 months which was not statistically significant. We observed a reduction in the anterior chamber angle, depth and volume of 14.23°, 167 μm and 60.44 mm3 , respectively. This reduction remained stable during the follow-up period. Linear regressions performed for anterior chamber angle, depth and volume in function of the vault generated R2 values of 0.12, 0.12 and 0.49, respectively.

    CONCLUSION: The anterior segment stabilizes at the first month postoperatively.

    Linear mathematical models proved inadequate in predicting the changes induced by this intraocular lens.