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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 ...
Pluperfect. The pluperfect (shortening of plusquamperfect ), usually called past perfect in English, characterizes certain verb forms and grammatical tenses involving an action from an antecedent point in time. Examples in English are: "we had arrived " before the game began; "they had been writing " when the bell rang.
Specialty. Ophthalmology, optometry, neuro-ophthalmology, neurology, neurosurgery. Papilledema or papilloedema is optic disc swelling that is caused by increased intracranial pressure due to any cause. [ 1] The swelling is usually bilateral and can occur over a period of hours to weeks. [ 2] Unilateral presentation is extremely rare.
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 ...
In a new study published in the journal Scientific Reports, researchers scanned the brains of 54 health women between the ages of 40 and 65. The scans found that women in different stages of ...
v. t. e. In linguistics, aspect is a grammatical category that expresses how a verbal action, event, or state, extends over time. For instance, perfective aspect is used in referring to an event conceived as bounded and unitary, without reference to any flow of time during the event ("I helped him"). Imperfective aspect is used for situations ...
t. e. Continuum mechanics is a branch of mechanics that deals with the deformation of and transmission of forces through materials modeled as a continuous medium (also called a continuum) rather than as discrete particles. The French mathematician Augustin-Louis Cauchy was the first to formulate such models in the 19th century.