Experimental evaluation of the injection force exerted in intraocular lens delivery with syringe-type injectors

Cabeza-Gil, I. (Universidad de Zaragoza) ; Ríos-Ruiz, I. (Universidad de Zaragoza) ; Calvo, B. (Universidad de Zaragoza)

Resumen: The process of intraocular lens (IOL) delivery within the capsular bag during cataract surgery is crucial, as the integrity of the IOL, the injector and the ocular structures should be preserved at all times. This study aims to obtain the main parameters that affect the injection force exerted in the ejection of an intraocular lens (IOL) through syringe-type injectors. For that purpose, ejection tests were carried out in vitro, measuring the resistance force throughout the entire delivery process. The effect of IOL material, haptic design, IOL thickest area and ophthalmic viscosurgical device (OVD) was studied by ejecting seven IOLs with four syringe-type injectors of different sizes, 3.0, 2.2 and 1.8 mm. In all injectors, plate hydrophilic IOLs present the lowest resistance forces; hydrated C-loop hydrophobic IOLs present higher forces and the C-loop hydrophobic IOL in dry conditions presents the highest resistance forces. All IOLs could be properly delivered with an injector size of 2.2 mm, making injector sizes of 3.0 mm outdated. The injector size of 1.8 mm damaged several IOLs. IOL material and cartridge nozzle size were the most influential parameters in IOL delivery. IOL thickest area was also relevant but in a lesser extent whereas IOL haptic design was not as relevant.

Idioma: Inglés

DOI: 10.1016/j.jmbbm.2021.104793

Año: 2021

Publicado en: Journal of the Mechanical Behavior of Biomedical Materials 124 (2021), 104793 [8 pp.]
ISSN: 1751-6161

Factor impacto JCR: 4.042 (2021)

Categ. JCR: ENGINEERING, BIOMEDICAL rank: 48 / 98 = 0.49 (2021) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, BIOMATERIALS rank: 27 / 46 = 0.587 (2021) - Q3 - T2

Factor impacto CITESCORE: 6.6 - Materials Science (Q1) - Engineering (Q1)

Factor impacto SCIMAGO: 0.746 - Biomedical Engineering (Q2) - Biomaterials (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FSE/T24-20R
Financiación: info:eu-repo/grantAgreement/ES/DGA-IIU/1408-2018
Financiación: info:eu-repo/grantAgreement/ES/MCIU/DPI2017-84047-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/PRE2018-084021
Financiación: info:eu-repo/grantAgreement/ES/UZ/ICTS NANBIOSIS-U13 Unit-CIBER-BBN

Tipo y forma: Article (Published version)

Área (Departamento): Área Mec.Med.Cont. y Teor.Est. (Dpto. Ingeniería Mecánica)