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Prosopagnosia (from Greek prósōpon, meaning "face", and agnōsía, meaning "non-knowledge"), [2] also known as face blindness, [3] is a cognitive disorder of face perception in which the ability to recognize familiar faces, including one's own face (self-recognition), is impaired, while other aspects of visual processing (e.g. object discrimination) and intellectual functioning (e.g ...
Self-induced asphyxiation, sometimes to the point of near unconsciousness. [ 20] Sexual arousal of a male in response to the image of himself as female. [ 21] Making oneself bleed, a type of hematolagnia. [ 22] The image of oneself in the form of an infant. [ 19] The image of oneself in the form of a child.
Spotligectophobia, scopophobia, scoptophobia or ophthalmophobia is an anxiety disorder characterized by an excessive fear of being seen in public or stared at by others. [ 1] Similar phobias include erythrophobia, the fear of blushing, and an epileptic 's fear of being looked at, which may itself precipitate such an attack.
Visual impairment. Visual or vision impairment ( VI or VIP) is the partial or total inability of visual perception. In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [ 6]
Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.
Glasses. Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces that rest over the ears. Glasses are typically used for vision correction, such as ...
Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [2] though the term is sometimes additionally applied to abnormal or irrational fear of light, such as ...
A person with synesthesia may associate certain letters and numbers with certain colors. Most synesthetes see characters just as others do (in whichever color actually displayed) but they may simultaneously perceive colors as associated with or evoked by each one. Synesthesia ( American English) or synaesthesia ( British English) is a ...