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Glasses, surgery [3] Frequency. ~2% (children) [3] Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3]
Prism adaptation. Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, 1909/1962). [1]
Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
The dog sense of smell is the most powerful sense of this species, the olfactory system of canines being much more complex and developed than that of humans. [1] Dogs have roughly forty times more smell-sensitive receptors than humans, ranging from about 125 million to nearly 300 million in some dog breeds, such as bloodhounds.
JOHN CARUCCI. May 21, 2024 at 5:34 AM. NEW YORK (AP) — They may call it a catwalk, but the Pet Gala is the dogs' time to shine. Designer Anthony Rubio threw the now-annual fashion fete Monday ...
The Blacky pictures test was a projective test, employing a series of twelve picture cards, used by psychoanalysts in mid-20th century America and elsewhere, to investigate the extent to which children's personalities were shaped by Freudian psychosexual development . The test was created by Gerald S. Blum in 1947, [1] who was later Professor ...
: 140 The dog's visual system has evolved to aid in hunting. Dogs have been shown to be able to discriminate between humans (e.g., identifying their human guardian) at a range of between 800 and 900 metres (2,600 and 3,000 ft); however, this range decreases to 500–600 metres (1,600–2,000 ft) if the object is stationary.
Coat. Hairless. Dog ( domestic dog) African hairless dogs, also known as Abyssinian sand terriers, were hairless dogs from Africa. It is unknown if any examples still exist. [1] [2] [3] This breed of dog, also known as the African Sand Dog, is known for being “semi-wild” meaning they tend to follow rather than live with the cattle breeders ...
