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  2. Cystinosis - Wikipedia

    en.wikipedia.org/wiki/Cystinosis

    Cystinosis is a rare genetic disorder [11] that causes an accumulation of the amino acid cystine within cells, forming crystals that can build up and damage the cells. These crystals negatively affect many systems in the body, especially the kidneys and eyes. [3]

  3. Ommatidium - Wikipedia

    en.wikipedia.org/wiki/Ommatidium

    The butterfly compound eye consists of multiple ommatidia, each of which consist of nine photoreceptor cells (numbered from R1–R9), and primary and secondary pigment cells. [5] Nymphalid butterflies have the simplest eye ommatidium structure, consisting of eight photoreceptor cells (R1–R8) and a tiny R9 cell organized into a different tier.

  4. Synchysis scintillans - Wikipedia

    en.wikipedia.org/wiki/Synchysis_scintillans

    Synchysis scintillans is a degenerative condition of the eye resulting in liquefied vitreous humor and the accumulation of cholesterol crystals within the vitreous. It is also known as cholesterolosis bulbi. The vitreous liquifies in a process known as syneresis.

  5. Hollenhorst plaque - Wikipedia

    en.wikipedia.org/wiki/Hollenhorst_plaque

    A Hollenhorst plaque (also known as a retinal cholesterol embolus) is a cholesterol embolus that is seen in a blood vessel of the retina.It is usually found when a physician performs ophthalmoscopy, during which a plaque will appear as a small, bright crystal that is refractile (reflects the light from the ophthalmoscope) and yellow. [1]

  6. Scintillating scotoma - Wikipedia

    en.wikipedia.org/wiki/Scintillating_scotoma

    Artist's depiction of a scintillating scotoma, exhibiting a flashing visual pattern similar to dazzle camouflage used during WWI.. Scintillating scotoma is a common visual aura that was first described by 19th-century physician Hubert Airy (1838–1903).

  7. Blepharitis - Wikipedia

    en.wikipedia.org/wiki/Blepharitis

    Watery eyes – due to excessive tearing. [7] Red eyes – due to dilated blood vessels on the sclera. [7] Swollen eyelids – due to inflammation. [7] Crusting at the eyelid margins/base of the eyelashes/medial canthus, generally worse on waking – due to excessive bacterial buildup along the lid margins. [4] [5] [7]

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  9. Pigment dispersion syndrome - Wikipedia

    en.wikipedia.org/wiki/Pigment_dispersion_syndrome

    There is no cure, but pigmentary glaucoma can be managed with eye drops or treated with simple surgeries. If caught early and monitored, chances of glaucoma are greatly reduced. A 2016 Cochrane Review sought to determine the effectiveness of YAG laser iridotomy versus no laser iridotomy for pigment dispersion syndrome and pigmentary glaucoma ...