12/29/2023 0 Comments Entoptic phenomena macular pigment![]() The researchers further created different entopic patterns that were easier for people to see, which may allow new methods to measure macular pigment density. In an initial study, the researchers verified this entoptic phenomenon, showing that humans can perceive and discriminate structured light. These fibers act as a polarization filter that enable a typical person to perceive linearly polarized light through the entoptic phenomena known as Haidinger’s brushes, bow-tie-shaped shadows that appear in a person’s field of vision. Structured light beams can be engineered to probe specific biological structural organizations, such as the fibers in the human macula. “Our work aims to improve the diagnostic abilities of optometrists and ophthalmologists by bringing tools developed for quantum information science to vision healthcare for the first time,” says Connor Kapahi, Ph.D. The research team led by Dusan Sarenac and Dmitry Pushin achieved the first integration of the structured light toolbox into vision science and now wants to develop novel diagnostic tests to improve selectivity towards the structure of the macula and enable new methods of diagnosing macular degeneration before vision loss occurs. Even after diagnosis via fundus photography or optical coherence tomography (OCT), which requires the subjective evaluation of retinal images by professional ophthalmologists, no treatment exists which can reverse vision loss caused by macular degeneration. Unfortunately, patients often do not seek medical care until vision loss has already occurred. ![]() Macular degeneration (MD) is the leading global cause of blindness among people over the age of 60 and accounts for 90% of new cases of legal blindness in Canada. More Topics detection diagnostics health interferometry macular degeneration vision A programmable structured light interferometer has shown remarkable advancements in studying disorders and diseases of the human eyeĪ collaboration between the Institute for Quantum Computing (IQC), the University of Waterloo School of Optometry and Vision Science, and the Center for Eye and Vision Research in Hong Kong is working on a programmable structured light interferometer that can detect debilitating eye diseases and disorders such as macular degeneration before irreversible damage occurs.
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