Diseño y caracterización de un nuevo sistema de estabilización de lentes blandas tóricas individualizadas
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2026
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13/06/2025
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Universidad Complutense de Madrid
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Abstract
El uso de una lente de contacto tórica individualizada y estabilizada sin prisma de balastro, no sólo proporciona una adecuada función visual (agudeza visual y sensibilidad al contraste), sino que reduce el efecto comático inducido en el sistema lente-ojo, mejorando la función visual. Además, por tener un diseño más delgado, se considera que podría producir mayor confort y mejor salud ocular debido a una menor disrupción de la película lagrimal. Material y métodos. Se realizó una simulación óptica de un diseño prototipo y posteriormente se fabricó siguiendo la normativa ISO vigente. Para confirmar la validez del diseño, se utilizaron dos lentes de contacto blandas tóricas, control (PB) y test (HIT). La única diferencia entre ellas fue el diseño de la zona lenticular, eliminando el prisma de balastro de dicha zona. En el estudio clínico se revisó la función visual sin lente de contacto y con cada una de las lentes de estudio. También se revisaron los Zernike oculares y la película lagrimal. Los voluntarios respondieron a cuestionarios subjetivos de comodidad con lentes de contacto...
The use of an individualised, stabilised toric contact lens without a ballast prism not only provides adequate visual function (visual acuity and contrast sensitivity), but also reduces the comatic effect induced in the lens-eye system, improving visual function. In addition, because of its thinner design, it is considered that it could produce greater comfort and better ocular health due to less tear film disruption.Material and methods. An optical simulation of a prototype design was carried out and the lenses were manufactured, according to current ISO standards. To confirm the validity of the design, two different design of toric soft contact lenses, control (PB) and test (HIT), were used. The only difference between them was the lenticular zone design, eliminating the ballast prism from the lenticular zone. In the clinical study, visual function without contact lenses and with each of the study lenses was reviewed. Ocular Zernike and tear film were also checked. Volunteers completed subjective contact lens comfort questionnaires...
The use of an individualised, stabilised toric contact lens without a ballast prism not only provides adequate visual function (visual acuity and contrast sensitivity), but also reduces the comatic effect induced in the lens-eye system, improving visual function. In addition, because of its thinner design, it is considered that it could produce greater comfort and better ocular health due to less tear film disruption.Material and methods. An optical simulation of a prototype design was carried out and the lenses were manufactured, according to current ISO standards. To confirm the validity of the design, two different design of toric soft contact lenses, control (PB) and test (HIT), were used. The only difference between them was the lenticular zone design, eliminating the ballast prism from the lenticular zone. In the clinical study, visual function without contact lenses and with each of the study lenses was reviewed. Ocular Zernike and tear film were also checked. Volunteers completed subjective contact lens comfort questionnaires...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Óptica y Optometría, leída el 13-06-2025












