La endotropia es el tipo de estrabismo más frecuente en retraso psicomotor. La variabilidad de la magnitud de desviación es una característica del estrabismo. 7. Wattiez R, Casanova FH, Cunha RN, Mendonça TS. Correção de estrabismo paralítico por injeção de toxina botulínica. Arq Bras Oftalmol. ;63(1) El estrabismo previo a la extracción de la catarata se observó en 12 casos, ocho con endotropía (ET) y cuatro con exotropía (XT). El estrabismo.

Author: Tegis Maur
Country: Panama
Language: English (Spanish)
Genre: Sex
Published (Last): 15 June 2006
Pages: 276
PDF File Size: 18.89 Mb
ePub File Size: 16.76 Mb
ISBN: 901-8-40481-511-9
Downloads: 14318
Price: Free* [*Free Regsitration Required]
Uploader: Malabar

However, Cronemberger et al. A family history of strabismus is a very good reason for an evaluation by a pediatric estrabimso. Strabismus surgery was not required in most of the cases. Eshrabismo a statistically-significant difference was found, the Wilcoxon signed-rank test was used to identify which time points differed among themselves. Botulinum toxin was injected as the only treatment in 1 patient, strabismus surgery was performed in 4, and strabismus surgery and botulinum toxin were used in another case.

BTA is also used to treat spasms of facial muscles, entropion, corneal ulceration, and exposure keratitis 3,4, To study the prevalence, characteristics, indications for and results of strabismus treatment secondary esttrabismo congenital cataracts. Its disadvantages include transient ptosis and strabismus resulting from diffusion of the drug into surrounding muscles and, less frequently, scleral perforation, retrobulbar haemorrhage, and systemic effects 3,5,9, The role of botulinum toxin A in acute-onset esotropia.

The paralysed muscle shows histopathological signs of myofibrillar atrophy and its terminal portion suffers demyelination, subsequently undergoing regeneration with the formation of new myoneural connections 8,9.

Unilateral pseudophakia in children under 4 years. Therefore, the results of our study may have been influenced by the low administered dose, and higher doses might produce better results 18, Among the different types of paralytic strabismus, sixth nerve palsy is the most frequent, followed by fourth and third nerve palsy.


Management of esotropia is based on a number of factors. The best results occur when there is fusion, providing a more stable alignment 3.

The other 6 cases required strabismus treatment. In our study, complications ptosis in All the contents of this journal, except where otherwise eetrabismo, is licensed under a Creative Commons Attribution License. The general health of the eye, as well as the refractive state of the eye ie.

Onze de Junho, Apto. Although Clostridium nedotropia produces various toxin types, type A is the most studied due to its sustained toxigenicity, ease of culture, and stable crystallisation 6. Treatment modalities used to realign the eyes include spectacles sometimes with prism or bifocalstrabismus surgery eye muscle surgeryand botulinum toxin less frequently utilized.

Comparison of Botox with a Chinese type A botulinum toxin. It may be intermittent or constant and may occur with near fixation, distance fixation, or both. Botulinum toxin injection of eye muscles to correct strabismus. Int Ophthalmol Clin ; Since a statistically-significant difference was found when comparing the three time points concurrently, the Wilcoxon signed-rank test was used to identify which time points differed among themselves pairwise, and significant differences was found in all comparisons.

Observations on bilateral simultaneous botulinum toxin injection in estrabisml esotropia. The lack of suppression can also be a good prognostic enxotropia for restoration of binocular vision using prisms, surgery, or BTA Ocular misalignment, if detected, is quantified.

American Association for Pediatric Ophthalmology and Strabismus

Botulinum toxin type A BTA has been studied since for selective weakening of extraocular muscles and it was rapidly incorporated into the treatment of strabismus as an alternative to traditional surgery En un paciente se inyectaron 5u. After three months of follow-up, surgery or readministration were indicated to two children whose first application produced little or no effect.


Botulinum toxin for the treatment of strabismus. Satisfied results was observed only in one patient from this group. Strabismus secondary to congenital cataracts occurred in a significant number of patients and increased after cataract extraction.

Mean age at the time of administration in group 1 was 1. What are the treatment options for esotropia?

Estrabismo y cataratas congénitas

Invest Ophthalmol Vis Sci ; The drug acts on muscle nerve endings by blocking calcium transport. Prematurity, a positive family history, and various neurological and genetic disorders increase the risk of eye misalignment. Among adult patients, the average age at administration was Therefore, a study with a more prolonged follow-up period may yield different results.

Esotropia is in-turning of one or both eyes [See figure 1]. What are the different types of esotropia? Esotropia can also be secondary to other conditions. High levels of binocular function are achievable after removal of monocular cataracts in children before 8 years of age. American Academy of Ophthalmology. The time of action of the toxin can also interfere with the analysis of results.

Botulinum toxin type A is an effective pharmacologic alternative in the treatment of various types of strabismus. Ocular alignment may persist or regress, as the effect is temporary; it is therefore necessary to reassess treatment after administration 3,4.

The incidence of adverse effects was also evaluated. Trans Am Ophthalmol Soc. Cataract surgery and intraocular lens implantation in children. Stereopsis after congenital cataract. Patients were divided into two groups: