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  2. Pseudoexfoliation syndrome - Wikipedia

    en.wikipedia.org/wiki/Pseudoexfoliation_syndrome

    Pseudoexfoliation syndrome, often abbreviated as PEX[1] and sometimes as PES or PXS, is an aging-related systemic disease manifesting itself primarily in the eyes which is characterized by the accumulation of microscopic granular amyloid-like protein fibers. [2] Its cause is unknown, although there is speculation that there may be a genetic basis.

  3. Waardenburg syndrome - Wikipedia

    en.wikipedia.org/wiki/Waardenburg_syndrome

    Waardenburg syndrome is a group of rare genetic conditions characterised by at least some degree of congenital hearing loss and pigmentation deficiencies, which can include bright blue eyes (or one blue eye and one brown eye), a white forelock or patches of light skin. These basic features constitute type 2 of the condition; in type 1, there is ...

  4. Polycoria - Wikipedia

    en.wikipedia.org/wiki/Polycoria

    Polycoria is extremely rare, and other conditions are frequently mistaken for it. [2] [3] Polycoria is often congenital, however not diagnosed until adulthood. [4]The general cause of polycoria is unknown, but there are some other eye conditions that are in association with polycoria.

  5. Keratoconus - Wikipedia

    en.wikipedia.org/wiki/Keratoconus

    Keratoconus (KC) is a disorder of the eye that results in progressive thinning of the cornea. [3] This may result in blurry vision, double vision, nearsightedness, irregular astigmatism, [4] and light sensitivity leading to poor quality-of-life. [3][5] Usually both eyes are affected. [3] In more severe cases a scarring or a circle may be seen ...

  6. Norrie disease - Wikipedia

    en.wikipedia.org/wiki/Norrie_disease

    Norrie disease is a rare X-linked recessive genetic disorder that primarily affects the eyes and almost always leads to blindness. It is caused by mutations in the Norrin cystine knot growth factor gene, also referred to as Norrie Disease Pseudoglioma (NDP) gene. [1][2] Norrie disease manifests with vision impairment either at birth, or within ...

  7. Semaglutide is linked to a rare eye condition that can cause ...

    www.aol.com/lifestyle/semaglutide-linked-rare...

    Researchers have found a link between semaglutide use and NAION, a rare condition that is the second-leading cause of optic nerve blindness. (Getty Images) (Jacob Wackerhausen via Getty Images)

  8. What Is Coloboma? All About Madeleine McCann’s Rare Eye Condition

    www.aol.com/coloboma-madeleine-mccann-rare-eye...

    What Is the Rare Eye Condition Coloboma? Klaus Vedfelt - Getty Images. A young woman in Poland is getting attention after speaking out on Instagram with claims that she may be Madeline McCann, the ...

  9. Monochromacy - Wikipedia

    en.wikipedia.org/wiki/Monochromacy

    Monochromacy (from Greek mono, meaning "one" and chromo, meaning "color") is the ability of organisms to perceive only light intensity without respect to spectral composition. Organisms with monochromacy lack color vision and can only see in shades of grey ranging from black to white. Organisms with monochromacy are called monochromats.

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