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Among fifth and sixth grade children convergence insufficiency is 13%. In studies that used standardized definitions of convergence insufficiency, investigators have reported a prevalence of 4.2–6% in school and clinic settings.
Convergence insufficiency; Convergence micropsia; Divergence excess; Basic esophoria; Convergence excess; Divergence insufficiency; Fusional vergence dysfunction (reduced positive and negative fusional vergence, with normal or near-normal phoria) Heterophoria
In mathematics, convergence tests are methods of testing for the convergence, conditional convergence, absolute convergence, interval of convergence or divergence of an infinite series =.
If Sn is a sum of n real independent random variables: S n = X 1 + ⋯ + X n {\displaystyle S_ {n}=X_ {1}+\cdots +X_ {n}\,} then Sn converges almost surely if and only if Sn converges in probability. The dominated convergence theorem gives sufficient conditions for almost sure convergence to imply L1 -convergence:
In probability theory and statistics, the Weibull distribution / ˈ w aɪ b ʊ l / is a continuous probability distribution. It models a broad range of random variables, largely in the nature of a time to failure or time between events. Examples are maximum one-day rainfalls and the time a user spends on a web page.
A sequence () that converges to is said to have order of convergence and rate of convergence if lim n → ∞ | x n + 1 − L | | x n − L | q = μ . {\displaystyle \lim _{n\rightarrow \infty }{\frac {\left|x_{n+1}-L\right|}{\left|x_{n}-L\right|^{q}}}=\mu .}
Accommodative excess may occur secondary to convergence insufficiency also. In convergence insufficiency near point of convergence will recede, and positive fusional vergence (PFV) will reduce. So, the patient uses excessive accommodation to stimulate accommodative convergence to overcome reduced PFV.
Anisocoria. A large difference in the size of the pupils following application of Tropicamide in the right eye only. Anisocoria is a condition characterized by an unequal size of the eyes' pupils. Affecting up to 20% of the population, anisocoria is often entirely harmless, but can be a sign of more serious medical problems.
Those with accommodative insufficiency typically have PRA values below −1.50 diopters. See also. Accommodation in fish; Adaptation (eye) Amplitude of accommodation; Convergence insufficiency; Mandelbaum effect; Negative relative accommodation; References
Specialty. Ophthalmology. Internuclear ophthalmoplegia ( INO) is a disorder of conjugate lateral gaze in which the affected eye shows impairment of adduction. When an attempt is made to gaze contralaterally (relative to the affected eye), the affected eye adducts minimally, if at all. The contralateral eye abducts, however with nystagmus.