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  2. Effects of long-term contact lens wear on the cornea - Wikipedia

    en.wikipedia.org/wiki/Effects_of_long-term...

    Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium.

  3. Rheum - Wikipedia

    en.wikipedia.org/wiki/Rheum

    Rheum from a cat's eyes. Rheum ( / ruːm /; from Greek: ῥεῦμα rheuma 'a flowing, rheum') is a thin mucus naturally discharged from the eyes, nose, or mouth, often during sleep (contrast with mucopurulent discharge ). [ 1][ 2][ 3] Rheum dries and gathers as a crust in the corners of the eyes or the mouth, on the eyelids, or under the nose ...

  4. Chinese water torture - Wikipedia

    en.wikipedia.org/wiki/Chinese_water_torture

    Chinese water torture or a "dripping machine" [ 1] is a mentally painful process in which cold water is slowly dripped onto the scalp, forehead or face for a prolonged period of time. [ 1] The process causes fear and mental deterioration on the subject. The pattern of the drops is often irregular, and the cold sensation is jarring, which causes ...

  5. Closed-eye hallucination - Wikipedia

    en.wikipedia.org/wiki/Closed-eye_hallucination

    Closed-eye hallucinations and closed-eye visualizations ( CEV) are hallucinations that occur when one's eyes are closed or when one is in a darkened room. They should not be confused with phosphenes, perceived light and shapes when pressure is applied to the eye's retina, or some other non-visual external cause stimulates the eye.

  6. Caloric reflex test - Wikipedia

    en.wikipedia.org/wiki/Caloric_reflex_test

    Both eyes will turn toward the contralateral ear, with horizontal nystagmus (quick horizontal eye movements) to the ipsilateral ear. If the water is cold, relative to body temperature (30 °C or below), the endolymph falls within the semicircular canal, decreasing the rate of vestibular afferent firing. This situation mimics a head turn to the ...

  7. Why Your Head and Eyes Hurt After Viewing the Eclipse - AOL

    www.aol.com/why-head-eyes-hurt-viewing-210905511...

    Experts say it's probably not serious. I f you have a headache or eye pain after viewing the solar eclipse—even if you wore eclipse glasses—you’re not alone.But don’t panic. Experts say it ...

  8. Vestibulo–ocular reflex - Wikipedia

    en.wikipedia.org/wiki/Vestibulo–ocular_reflex

    The vestibulo-ocular reflex. A rotation of the head is detected, which triggers an inhibitory signal to the extraocular muscles on one side and an excitatory signal to the muscles on the other side. The result is a compensatory movement of the eyes. The vestibulo-ocular reflex ( VOR) is a reflex that acts to stabilize gaze during head movement ...

  9. Rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep

    Rapid eye movement sleep ( REM sleep or REMS) is a unique phase of sleep in mammals (including humans) and birds, characterized by random rapid movement of the eyes, accompanied by low muscle tone throughout the body, and the propensity of the sleeper to dream vividly. The REM phase is also known as paradoxical sleep ( PS) and sometimes ...

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