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The induced defocus by Defocus Incorporated Soft Contact lenses is dependent on visual distance and ambient illuminance.
Hao, Jiangdong; Lin, Zhenghua; Xi, Xiaoyun; Yang, Zhikuan; Artal, Pablo; Lan, Weizhong.
Afiliación
  • Hao J; Aier Academy of Ophthalmology, Central South University, Changsha, China.
  • Lin Z; Hunan Province Optometry Engineering and Technology Research Centre, Changsha, China.
  • Xi X; Hunan Province International Cooperation Base for Optometry Science and Technology, Changsha, China.
  • Yang Z; Hunan Province Optometry Engineering and Technology Research Centre, Changsha, China.
  • Artal P; Hunan Province International Cooperation Base for Optometry Science and Technology, Changsha, China.
  • Lan W; Laboratorio de Óptica, Universidad de Murcia, Murcia, Spain.
Ophthalmic Physiol Opt ; 44(6): 1237-1247, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38980146
ABSTRACT

PURPOSE:

Defocus Incorporated Soft Contact (DISC) lenses, a commonly used type of multifocal lens in clinical practice, may slow down myopia progression by inducing myopic retinal defocus. The purpose of this study was to explore whether the induced defocus across the retina could be affected by visual environments encountered in the real world, such as differences in viewing distance and ambient illuminance.

METHODS:

In this cross-over trial, 30 myopic adults wore both DISC lenses and single vision contact (SVC) lenses in random order. An open-view Hartmann-Shack scanning wavefront sensor was used to measure defocus at different retinal locations along the horizontal meridian under four experimental conditions far target (3 m) and near targets (0.33 m) under scotopic (<1 lux) or photopic (~300 lux) conditions.

RESULTS:

The results showed that DISC lenses induced more myopic retinal defocus than SVC lenses in all conditions (all p < 0.05), except for the scotopic near target. In addition, for DISC lenses, the defocus was greater in the photopic than the scotopic conditions for both the far and near targets (both p < 0.05).

CONCLUSION:

In conclusion, the retinal defocus induced by these multifocal lenses was dependent on both visual distance and ambient illuminance, indicating that the visual conditions might affect the anti-myopia efficacy of these devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estudios Cruzados / Lentes de Contacto Hidrofílicos / Miopía Límite: Adult / Female / Humans / Male Idioma: En Revista: Ophthalmic Physiol Opt Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Estudios Cruzados / Lentes de Contacto Hidrofílicos / Miopía Límite: Adult / Female / Humans / Male Idioma: En Revista: Ophthalmic Physiol Opt Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido