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A recent study on 38 children concluded that surgery for infantile esotropia is most likely to result in measureable stereopsis if patient age at alignment is not more than 16 months. [24] Another study found that for children with infantile esotropia early surgery decreases the risk of dissociated vertical deviation developing after surgery. [25]
Secondary MFS is a frequent outcome of surgical treatment of congenital esotropia. [2] A study of 1981 showed MFS to result in the vast majority of cases if surgical alignment is reached before the age of 24 months and only in a minority of cases if it is reached later. [5] MFS was first described by Marshall Parks. [3]
Most patients with "early-onset" concomitant esotropia are emmetropic, whereas most of the "later-onset" patients are hyperopic. It is the most frequent type of natural strabismus not only in humans, but also in monkeys. [3] Concomitant esotropia can itself be subdivided into esotropias that are either constant, or intermittent. Constant esotropia
It is used as an ocular antihypertensive in the treatment of open angle glaucoma and, in some cases, accommodative esotropia. It is available under several trade names such as Phospholine Iodide (Wyeth-Ayerst). Echothiophate binds irreversibly to cholinesterase. Because of the very slow rate at which echothiophate is hydrolyzed by ...
Parasitaemia prevalence was 31% in the intervention and 38% in the comparison areas (p=0.06). In a ‘per protocol’ analysis, which only included infants who actually received IPTi there was a significant benefit: parasite prevalence was 22%, 19 percentage points lower than comparison children in the control group (p=0.01).
It can be addressed with further surgery or with vision therapy; vision therapy has shown promising results if the consecutive exotropia is intermittent, alternating, and of small magnitude. [6] (Consecutive exotropia may however also spontaneously develop from esotropia, without surgery or botulinum toxin treatment. [7])
Treatment depends on the type of strabismus and the underlying cause. [3] This may include the use of glasses and possibly surgery. [3] Some types benefit from early surgery. [3] Strabismus occurs in about 2% of children. [3] The term comes from the Ancient Greek word στραβισμός (strabismós), meaning 'a squinting'. [6]
Dissociated vertical deviation (DVD) is an eye condition which occurs in association with a squint, typically infantile esotropia. The exact cause is unknown, although it is logical to assume it is from faulty innervation of eye muscles.