Eye drops are a form of medication that is delivered directly into the eye via a dropper or a small plastic bottle. They are used to treat a variety of eye conditions, such as dry eyes, allergies, infections, glaucoma, and inflammation.

There are different types of eye drops, including:

1. Lubricating eye drops: These drops are used to relieve dryness and irritation in the eyes. They work by adding moisture to the eyes and lubricating the surface of the eye.
2. Anti-allergy eye drops: These drops are used to relieve symptoms of eye allergies, such as itching, redness, and watering. They work by blocking histamine, which is released during an allergic reaction.
3. Anti-inflammatory eye drops: These drops are used to reduce inflammation in the eye, which can be caused by a variety of conditions, such as uveitis or conjunctivitis. They work by suppressing the immune response and reducing swelling.
4. Antibiotic eye drops: These drops are used to treat bacterial infections of the eye, such as conjunctivitis or keratitis. They work by killing the bacteria causing the infection.
5. Glaucoma eye drops: These drops are used to lower intraocular pressure in people with glaucoma, which can lead to vision loss. They work by reducing the amount of fluid in the eye or improving the outflow of fluid.

It is important to use eye drops only as directed by a healthcare professional and to follow the instructions carefully. Some eye drops may have side effects or interact with other medications, so it is important to inform your doctor of any other medications you are taking. Additionally, eye drops should be stored properly and discarded after their expiration date to ensure their effectiveness and safety.