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Hay fever sufferers in particular will notice under-eye "smudges" during the height of the allergy season. Atopy can lead to frequent rubbing of the eyes, leading to local inflammation and increased pigmentation. [4] Also, dark circles from allergies are caused by superficial venous congestion [5] in the capillaries under the eyes.
A limbal ring is a dark ring around the iris of the eye, where the sclera meets the cornea. [1] It is a dark-colored manifestation of the corneal limbus resulting from optical properties of the region. [2] The appearance and visibility of the limbal ring can be negatively affected by a variety of medical conditions concerning the peripheral ...
Periorbital hyperpigmentation, also known as hereditary dark circles, is characterized by darker skin around the eyes caused by the presence of additional melanin. It is an extremely common hereditary human characteristic and is frequently found on individuals with dark skin. Periorbital hyperpigmentation is most prevalent within the 16–25 ...
The corneal limbus manifests as a dark ring around the iris. Its prominence varies by individual. The corneal limbus is the border between the cornea and the sclera. [1] It is highly vascularised. [1] Its stratified squamous epithelium is continuous with the epithelium covering the cornea. [2]
Eye circles are distinguished circles around the eyes, caused by either: Periorbital dark circles; Periorbital puffiness; The term may also refer to the limbal rings ...
The official party line from the NHS is that “most people should get all the nutrients they need by having a varied and balanced diet”. But this is harder to achieve than people might imagine ...
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Kayser–Fleischer rings (KF rings) are dark rings that appear to encircle the cornea of the eye. They are due to copper deposition in the Descemet's membrane as a result of particular liver diseases. [1] They are named after German ophthalmologists Bernhard Kayser and Bruno Fleischer who first described them in 1902 and 1903.