What is in drops for dry eyes? cant i just use visine?

Depends on goal: Dry eye drops contain salts and lubricants to try and mimic natural tears. If you have eye dryness, use drops that describe themselves as tear replacement or lubricating. Don't use drops which say "gets the red out" as these are drying. They should only be used to get the red out for a picture or an interview. Visine has two types: use the bottles with a blue picture. The red picture ones dry.

No: Visine is not ideal for chronic use as it contains drugs which constrict the blood vessels on the surface of the eye. Using this drug frequently can cause problems. It is safer to use lubricating drops (artifical tears) which contain no medication. See your eye doctor for other options.

Eyedrops: Eye drops are essentially a balance salt solution to lubricate the eyes. They contain a lubricating vehicle of various consistency and sometimes a preservative. Visine is ok for occasional use but with frequent use its preservative can cause eye irritation and rebound redness.

Just lubrication: Visine contains a vasoconstrictor that "gets the red out." the problem is that when that wears off, your eyes are redder than before (rebound vasodilation). Visine is not good to use.