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Diplopia. Diplopia. Other names. Double vision. One way a person might experience double vision. Specialty. Neurology, ophthalmology. Diplopia is the simultaneous perception of two images of a single object that may be displaced horizontally or vertically in relation to each other. [ 1] Also called double vision, it is a loss of visual focus ...
Status epilepticus ( SE ), or status seizure, is a medical condition consisting of a single seizure lasting more than 5 minutes, or 2 or more seizures within a 5-minute period without the person returning to normal between them. [ 3][ 1] Previous definitions used a 30-minute time limit. [ 2] The seizures can be of the tonic–clonic type, with ...
Epilepsy is a group of non-communicable neurological disorders characterized by recurrent epileptic seizures. [ 10] An epileptic seizure is the clinical manifestation of an abnormal, excessive, and synchronized electrical discharge in the neurons. [ 1] The occurrence of two or more unprovoked seizures defines epilepsy. [ 11]
The present perfect is a grammatical combination of the present tense and perfect aspect that is used to express a past event that has present consequences. [ 1] The term is used particularly in the context of English grammar to refer to forms like "I have finished". The forms are present because they use the present tense of the auxiliary verb ...
Amblyopia. Anisometropia is a condition in which a person's eyes have substantially differing refractive power. [ 1] Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition. [ 2][ 3] Patients may have up to 3D of anisometropia before the condition becomes clinically significant due to headache, eye ...
Far-sightedness, also known as long-sightedness, hypermetropia, and hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred. This blur is due to incoming light being focused behind, instead of on, the retina due to insufficient accommodation by the lens. [ 6]
Free-range runner ducks can fend for themselves. They are avid foragers that eat a wide variety of things like slugs, mosquitoes, snails, grass, wild greens, and small fish and crustaceans. Runner ...
Binocular vision. Principle of binocular vision with horopter shown. In biology, binocular vision is a type of vision in which an animal has two eyes capable of facing the same direction to perceive a single three-dimensional image of its surroundings. Binocular vision does not typically refer to vision where an animal has eyes on opposite ...