Isol Eye Ointment is a purified salt solution. It is used to treat dry eyes. Isol Eye Ointment is for external use only. It works by cleansing action. It cleans the eye and withdraws water from the front surface of the cornea which is the swollen cornea. This action relieves swelling in the eye which helps in clearing your vision. You should use it in a dose and duration as advised by your doctor. Before using this medicine, check the label. To use, hold it close to the eye. Gently press so that the medicine gets placed inside the lower eyelid. The most common side effects may include burning sensation. After using this medicine, do not drive as it may cause blurring of the vision. Inform your doctor if you are on any other medication or are allergic to this medicine.