Lens thickness in atopic cataract: case-control study

Area of Science:

• Ophthalmology
• Ocular Biometry

Background:

• Atopic cataracts are a specific type of lens opacity associated with atopic diseases.
• Understanding the biometry of atopic cataracts is crucial for diagnosis and management.

Purpose of the Study:

• To investigate the association between atopic cataracts and lens thickness.
• To compare lens thickness in patients with atopic cataracts, nonatopic cataracts, and normal lenses.

Main Methods:

• A retrospective matched case-control study was conducted.
• Analyzed 31 eyes with atopic cataracts, 62 with nonatopic cataracts, and 31 normal lenses, matched for age and sex.
• Lens thickness (LT) was measured and analyzed using statistical methods including repeated-measures analysis of variance and multivariate logistic regression.

Main Results:

• Eyes with atopic cataracts exhibited significantly thinner lenses (mean LT 3.76 mm) compared to nonatopic cataracts (3.94 mm) and normal lenses (4.11 mm).
• A thinner LT was correlated with anterior subcapsular cataract (ASC) (OR, 5.61) and negatively with age.
• ASC was more prevalent in atopic cataracts (77.4%) than in nonatopic cataracts (38.7%).

Conclusions:

• Lenses in eyes with atopic cataracts are thinner than in control groups.
• Atopic cataracts often present with anterior subcapsular opacity, which is associated with this observed lens thinning.