Ocular scattering is an optical phenomenon that degrades the retinal image in the human eye, similar to the effects of ocular aberrations or diffraction. However, there is still a lack of standardization in defining and measuring ocular scattering. Several devices and procedures have been described during the last decade, but most have not been validated or been shown to be reliable. The development of a standard procedure for measuring and describing ocular scattering is an ongoing subject in visual science. This review aims to provide a general definition of the concept of ocular scattering, based on the work of previous authors, and to highlight the advantages and disadvantages of measurement techniques that have been described.
Vissum/Instituto Oftalmológico de Alicante, Alicante, Spain (DPP, JLA), Departamento de Óptica, Farmacología y Anatomía, Universidad de Alicante, Alicante, Spain (DPP), Grupo de Óptica, Departamento de Física Aplicada, Escuela Universitaria de Ingeniería Minera, Universidad de Cantabria, Santander, Spain (DO), and Division of Ophthalmology, Universidad Miguel Hernández, Alicante, Spain (JLA).
This study was supported in part by a grant from the Spanish Ministry of Health, Instituto Carlos III, Red Temática de Investigación Cooperativa en Salud “Patología ocular del envejecimiento, calidad visual y calidad de vida,” Subproyecto de Calidad Visual (RD07/0062).
The authors have no proprietary or commercial interest in the medical devices that are involved in this article.
Received June 3, 2009; accepted April 28, 2010.