September 2008

 

CATARACT/ IOL

 

Effect on visual fields in children treated for bilateral congenital cataract


 

 

Dense cataracts in young children, even when surgically treated early causes persistent impairment of spatial vision, both in the fovea and the visual field, a recent study has found. Published in Investigative Ophthalmology and Visual Science, the study assessed the best corrected visual acuity and peripheral sensitivity, measured by high-pass resolution (HRP) visual fields, in children surgically treated for congenital cataracts. Lene Martin, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden, and colleagues, recorded acuity and peripheral sensitivity from 16 children, aged 10 to 15 years, either surgically treated for bilateral dense cataract before the age of 4.6 months (n=10) or surgically treated for bilateral partial cataract at ages 4 to 139 months (n=6). Data from 22 healthy children, mean age 11 years, served as control, the study authors wrote.

The researchers found that children with cataracts had significantly (P<0.0001) lower decimal acuity in their better eye (median, 0.55; range, 0.1–1.3) than did the control subjects (median, 1.2; range, 1.0–1.6). Additionally, 5 children were visually impaired according to the World Health Organization’s definition (i.e., acuity in the better eye P<0.3). The researchers also discovered that the children who had previously had dense bilateral cataract showed significantly lower peripheral sensitivity than did the control subjects (P=0.004). Significant correlations were observed between acuity and visual field parameters, the study authors wrote.

The researchers concluded that the effect of congenital cataracts on the visual field is less pronounced than that on visual acuity. They recommended that their findings be noted when assessing visual field results in the diagnosis of glaucoma, a frequent complication after cataract surgery in early infancy, the study said.

Reported by: EyeWorld News Services

Effect on visual fields in children treated for bilateral congenital cataract Effect on visual fields in children treated for bilateral congenital cataract
Ophthalmology News - EyeWorld Magazine
283 110
283 110
,
2016-07-11T08:56:37Z
True, 9