Phacoemulsification Cataract Surgery Affects the Discriminative Capacity of Iris Pattern Recognition.

Area of Science:

• Ophthalmology
• Biometrics
• Computer Science

Background:

• Cataract is a leading cause of blindness globally, treatable with surgery.
• Iris-based biometrics are widely used for personal authentication.
• The effect of cataract surgery on iris texture for biometric recognition remains understudied.

Purpose of the Study:

• To assess how cataract surgery affects iris texture patterns.
• To evaluate the impact on iris-based personal authentication systems.
• To release a new dataset, the IIITD Cataract Surgery Database (CaSD).

Main Methods:

• A non-comparative, non-randomized cohort study was conducted.
• The IIITD Cataract Surgery Database (CaSD) with 132 patients was utilized.
• Three commercial iris sensors and three biometric recognition systems were employed.

Main Results:

• Matching pre-operative to post-operative iris images yielded lower performance (74.69%) compared to pre-operative to pre-operative matching (93.42%).
• A control group of healthy irises showed 100% recognition.
• Re-enrollment improved performance but did not reach pre-operative levels (86.67%).

Conclusions:

• Cataract surgery alters the discriminative properties of iris texture.
• The findings raise concerns about the reliability of iris biometrics in post-cataract surgery individuals.
• Further research is needed to address the challenges in biometric authentication for this population.