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[Corneal astigmatism in children with congenital cataract]
Insights
Children with congenital cataracts often have significant corneal astigmatism, typically with-the-rule. Cataractous eyes in unilateral cases showed higher astigmatism than healthy eyes.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Corneal Surgery
Context:
- Congenital cataract is a leading cause of childhood blindness.
- Accurate assessment of pre-operative corneal astigmatism is crucial for surgical planning.
- Understanding astigmatism patterns in congenital cataracts aids in predicting visual outcomes.
Purpose:
- To investigate the prevalence and characteristics of corneal astigmatism in children diagnosed with congenital cataract prior to surgical intervention.
- To compare corneal astigmatism between cataractous eyes and fellow eyes in unilateral cases.
Summary:
- A retrospective review of 99 eyes from 62 children undergoing congenital cataract surgery was conducted.
- Corneal astigmatism was measured using an autorefract-keratometer and categorized by axis.
- The study found a high prevalence (65.7%) of significant corneal astigmatism (≥2.0 D), predominantly with-the-rule (83.8%).
Impact:
- This study highlights the significant burden of corneal astigmatism in pediatric congenital cataract patients.
- Findings emphasize the need for careful pre-operative astigmatism evaluation and management in this population.
- Results provide valuable data for ophthalmologists managing congenital cataracts and planning refractive outcomes.
Purpose:
To investigate corneal astigmatism in children with congenital cataract before surgery.
Materials And Methods:
We retrospectively reviewed the charts of 99 eyes of 62 patients (74 paired eyes and 25 single eyes) who had undergone congenital cataract surgery from March, 2000 to April, 2012. The mean age at surgery was 32.1 +/- 26.9 months. All eyes were examined using an autorefract-keratometer. Cases were divided into 3 groups according to the axis of astigmatism (with-the-rule, against-the-rule and oblique astigmatism).
Result:
The mean corneal astigmatism was 2.45 +/- 1.28 diopters (D) (range 0.25-6.87D). The prevalence of corneal astigmatism of 2.0 D or more was 65.7%. The most frequent was astigmatism with-the-rule (83.8%) (mean 2.64 +/- 1.25 D), oblique astigmatism was 11.1% (mean 1.43 +/- 0.98 D), and 5.1% of the cases had astigmatism against-the-rule (mean 1.55 +/- 1.07 D). The mean corneal astigmatism of the eye with cataract (2.46 D) was significantly higher than that of the normal eye (1.66 D) in unilateral cases.
Conclusions:
Children with congenital cataract had a high prevalence of large corneal astigmatism > or = 2.00D, that was generally with-the-rule. In the unilateral cataract patients, cataract eyes had higher corneal astigmatism than normal eyes.
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