9 pm eye drop is a medicine used to reduce pressure in the eyes in people with glaucoma and ocular hypertension (high pressure in the eye). If the pressure in your eye is too high it can damage your sight, potentially leading to blindness. It works by helping fluid flow from inside the eye into the blood.
Tear Drops is an eye lubricant or artificial tears used to relieve dry eyes. This can happen because not enough tears are made to keep the eye lubricated. It helps to soothe the irritation and burning seen in dry eyes by maintaining proper lubrication of the eyes.