| Título: | Effects of Light Scatter and Blur on Low-Contrast Vision and Disk Halo Size |
| Autores: | Puell Marín, María Cinta ; Palomo Álvarez, Catalina |
| Tipo de documento: | texto impreso |
| Editorial: | Lippincott Williams & Wilkins, 2017-04 |
| Dimensiones: | application/pdf |
| Nota general: | info:eu-repo/semantics/restrictedAccess |
| Idiomas: | |
| Palabras clave: | Estado = Publicado , Materia = Ciencias Biomédicas: Medicina: Oftalmología , Materia = Ciencias Biomédicas: Óptica y optometría: Baja visión , Materia = Ciencias Biomédicas: Óptica y optometría: Optometría , Tipo = Artículo |
| Resumen: |
Purpose: To investigate the individual effects of forward light scatter (FLS) and refractive blur on low-contrast vision and the size of the disk halo produced in response to an external glare source. Methods: Monocular disk halo radius, high- and low-contrast distance visual acuity (HCVA, LCVA), and contrast sensitivity (CS) were determined in 25 eyes of 25 healthy subjects under normal, FLS, and blur conditions. FLS was induced using the filter Black ProMist 2 to simulate an early cataract. Blur was induced using a +1.00 diopter lens to simulate an uncorrected refractive error. Results: Similar significant mean increases in halo radius were observed for the FLS (0.32 ± 0.10 log arc min; P Conclusions: Forward light scatter and refractive blur contributed to an increased size of the disk halo produced by a glare source in similar proportion. Although defocus blur has a substantial effect on LCVA, a loss of more than 1 line of LCVA after best refractive correction would be indicative of FLS. |
| En línea: | https://eprints.ucm.es/44383/1/effects%20light%20scatter-OptVisScien-2017.pdf |
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