Answer
It is an artificial tear used mainly to lubricate the eye and relieve dryness, grittiness and irritation associated with deficient tears.
Sources for this answer
- Isopto Plain — Current selected SmPCemc · Summary of Product Characteristics
- Hypromellose Eye Drops BP — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.