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Strabismus and nystagmus in paediatric age group treated for traumatic or congenital cataract

Poster Details

First Author: M.Diab EGYPT

Co Author(s):                  

Abstract Details


Many infants treated for cataracts develop strabismus and nystagmus, but little is known about the critical period for adverse ocular motor outcomes. We evaluate whether onset, duration of visual deprivation, and visual acuity affect ocular motor development


Ain shams university hospital Cairo Egypt


42 children treated for dense congenital or developmental cataracts were enrolled immediately post-op. Patients with sight-threatening complications were excluded. Eye alignment was assessed using prism-and-cover testing on a regular basis throughout follow-up. Fixation stability was determined from eye movement recordings at e'5 years of age. On the same visit, visual acuity was assessed. Binary logistic regression was used to assess risk factors in terms of multivariate odds ratios (OR).


29 children (69%) developed strabismus (19 esotropia, 8 exotropia 2 dissociated vertical deviation). 31 children (73.8%) had nystagmus); 14(33%) had good fixation stability. Infantile onset) and duration of deprivation e'6 weeks were significant risk factors for nystagmus. Infantile onset was also a significant risk factor for interocular difference in severity of nystagmus. Both infantile onset and visual acuity outcome of 20/40 or worse presented a significant risk for strabismus


Prior studies have demonstrated better visual acuity outcomes when the duration of visual deprivation is d'6 weeks. The current study demonstrated that reduced risk for nystagmus and strabismus are also associated with deprivation d'6 weeks, Prompt surgery (d'6 weeks from onset of a visually significant cataract) is associated with reduced risk for abnormal ocular motor outcomes, including nystagmus and strabismus FINANCIAL INTEREST: NONE

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