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  • AboutUs_Normal-24 The EyeCRO Approach
    • About Us
    • Careers
    • Location
    • Partners
  • MiDrops MiDROPS™
  • InVivo Models
    • Allergic Conjunctivitis
    • Corneal Sensitivity
    • Corneal Wound Healing
    • Diabetic Keratopathy
    • DL-AAA Retinal Leakage
    • Dry Eye Disease
    • Endotoxin induced Uveitis
    • Experimental Autoimmune Uveitis
    • Geographic Atrophy
    • Inherited Retinal Degenerations
    • Ischemia Reperfusion Injury
    • Laser-induced Choroidal Neovascularization
    • Light Damaged
    • Mitochondrial Neuropathy
    • Optic Nerve Crush
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    • Retinal Detachment
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    • STZ-induced Diabetic Retinopathy
    • VEGF-induced permeability
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Preclinical Ophthalmic Contract Research

Why Face Recognition Can Be Difficult with Central Vision Loss

January 16, 2013 //  by stanselb

Diseases such as age-related macular degeneration, cone-rod dystrophy and Stargardt disease cause scotomas, or blind spots, which often have devastating effects on central vision. They cause gaps in a person’s visual field, making it difficult to see words in a book, images on a computer monitor or TV and the features of someone’s face.

A recent research paper from Lighthouse International and the New York University School of Medicine focuses on these fixation problems.

The investigators noted that people with normal vision use their fovea — a pit in the center of the retina that is rich in cones — as the focal point for fixation. If the fovea is compromised by retinal disease, a person may develop “pseudofoveas” in the peripheral areas of their retinas. They are the brain’s and retina’s way of trying to compensate for the lost focal point. However, pseudofoveas can’t fixate as well as the natural fovea.

While some retinal conditions such as retinitis pigmentosa affect the peripheral retina first, they, too, can cause fixation problems in advanced stages, when the central retina becomes affected.

Read the entire article here.

Category: NewsTag: Age-related macular degeneration, cone-rod dystrophy, fovea, pseudofovea, retina, retinitis pigmentosa, Stargardt

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