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In the elderly, fatty deposits on the sclera can make it appear slightly yellow. People with dark skin can have naturally darkened sclerae, the result of melanin pigmentation. [4] In humans, and some other vertebrates, the whole sclera is white or pale, contrasting with the coloured iris.
Blepharochalasis – An immune-mediated inflammation of the eyelid that is characterized by exacerbations and remissions of eyelid edema which results in a stretching and subsequent atrophy of the eyelid tissue, leading to the formation of redundant folds over the lid margins. It typically affects only the upper eyelids, and may be unilateral ...
Xanthelasma is a sharply demarcated yellowish deposit of cholesterol underneath the skin. [1] It usually occurs on or around the eyelids ( xanthelasma palpebrarum , abbreviated XP). [ 1 ] [ 2 ] While they are neither harmful to the skin nor painful , these minor growths may be disfiguring and can be removed. [ 1 ]
It is seen as a yellow-white deposit on the conjunctiva adjacent to the limbus (the junction between the cornea and sclera). [3] (It is to be distinguished clinically from a pterygium, which is a wedge shaped area of fibrosis that may grow onto the cornea.) A pinguecula usually does not cause any symptoms.
Xanthelasma palpebrarum, yellowish patches consisting of cholesterol deposits above the eyelids. These are more common in people with familial hypercholesterolemia . Although hypercholesterolemia itself is asymptomatic , longstanding elevation of serum cholesterol can lead to atherosclerosis (build-up of fatty plaques in the arteries, so-called ...
They attach directly to the follicles of the eyelashes, which are arranged vertically within the tarsal plates of the eyelids. Fordyce spots, or Fordyce granules, are ectopic sebaceous glands found on the genitals and oral mucosa. They show themselves as yellowish-white milia (milk spots). [29]
Conjunctival concretions are generally asymptomatic.Common symptoms include eye discomfort, eye irritation, and foreign body sensation. Sometimes, the larger, harder or multiple concretions make the rubbing off of the superficial layers of the conjunctiva or eyelids to cause conjunctival abrasion, especially prominent when blinking.
Multiple evanescent white dot syndrome occurs mostly in females. Symptoms include a sudden loss of central vision, but patients eventually regain normal vision. The white dots are small and located in the posterior pole at the level of the retinal pigment epithelium. The white dots may disappear after the first few weeks of the disease.