Ophthalmological Examination and Imaging Features that Better Predict Risk of Angle Closure in Siblings.

Area of Science:

• Ophthalmology
• Genetics
• Medical Imaging

Background:

• Angle closure, a leading cause of irreversible blindness, has a genetic component.
• Identifying individuals at risk is crucial for timely intervention and prevention of vision loss.

Purpose of the Study:

• To evaluate if clinical and imaging data from patients with angle closure (probands) can predict the risk of angle closure in their siblings.
• To determine the predictive value of demographic, ocular examination, and anterior segment OCT (AS-OCT) findings.

Main Methods:

• A cross-sectional study involving 292 proband/sibling pairs aged 30+ in South India.
• Collected demographic data, ocular history, and performed comprehensive ophthalmic examinations including AS-OCT.
• Developed predictive models incorporating various factors and assessed their accuracy using statistical comparisons.

Main Results:

• Demographic and standard ocular exam metrics did not significantly improve sibling angle closure prediction.
• Models incorporating AS-OCT metrics showed significant improvement in predicting 2 of 3 angle closure outcomes.
• Receiver operating characteristic (ROC) curve analysis confirmed improved predictive accuracy with the inclusion of AS-OCT data.

Conclusions:

• Anterior segment OCT structural features can enhance the risk stratification for angle closure in siblings of affected individuals.
• This imaging-based approach may facilitate more targeted and effective family screening programs for angle closure.