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Horizontal optokinetic nystagmus. The optokinetic reflex ( OKR ), also referred to as the optokinetic response, or optokinetic nystagmus (OKN), is a compensatory reflex that supports visual image stabilization. [ 1] The purpose of OKR is to prevent image blur on the retina that would otherwise occur when an animal moves its head or navigates ...
Nystagmus. Nystagmus is a condition of involuntary (or voluntary, in some cases) [1] eye movement. [2] People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in reduced or limited vision. [3] In normal eyesight, while the head rotates about an axis, distant visual images are sustained by ...
Look up saccade in Wiktionary, the free dictionary. A saccade ( / səˈkɑːd / sə-KAHD; French: [sakad]; French for 'jerk') is a quick, simultaneous movement of both eyes between two or more phases of fixation in the same direction. [ 1] In contrast, in smooth-pursuit movements, the eyes move smoothly instead of in jumps.
Dogs have developed a special kind of emotional bond with humans over millennia. They connect with us in ways that other domestic animals haven't, per a new study. That's why dogs bring us so much ...
How Water Therapy Can Help Dogs Regain Mobility. Water therapy, or hydrotherapy, can be an effective form of physical rehabilitation for dogs recovering from injuries, surgery, or arthritis. The ...
Derek Jeter is looking back on the first time he ever appeared on a trading card — and why he's "still not happy" about it to this day.. While speaking to PEOPLE about the launch of the Arena ...
Progressive retinal atrophy (PRA) is a group of genetic diseases seen in certain breeds of dogs and, more rarely, cats. Similar to retinitis pigmentosa in humans, [ 1] it is characterized by the bilateral degeneration of the retina, causing progressive vision loss culminating in blindness. The condition in nearly all breeds is inherited as an ...
Circadian rhythms are the changes that most living things, including humans, experience over 24 hours that dictate vital bodily functions, such as our appetite and digestion, hormone release ...