Answer
It reduces microorganisms on the eye surface and nearby skin, helping lower the risk of infection entering the eye during a procedure.
Sources for this answer
- Povidone Iodine 5% w/v eye drops, solution — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.