Polyvinyl Alcohol

Polyvinyl alcohol (PVA) is a synthetic polymer derived from vinyl acetate through hydrolysis. It is commonly used in various industrial and medical applications due to its biocompatibility, film-forming properties, and water solubility. In medicine, PVA is often used as an ophthalmic lubricant, in contact lens solutions, and as a suspending agent in oral suspensions.

Indications

Polyvinyl alcohol is indicated for the relief of dry eyes, particularly in cases of insufficient tear production or evaporative dry eye syndrome. It is also used as a wetting agent and lubricant for contact lenses.

Dosage

The dosage of polyvinyl alcohol eye drops or ointment depends on the severity of dry eye symptoms and the recommendation of a healthcare professional. Typically, one or two drops are instilled into the affected eye(s) as needed, or as directed by the prescribing physician.

Contra-Indications

Polyvinyl alcohol eye drops or ointment are contraindicated in individuals with known hypersensitivity or allergy to any of the ingredients in the formulation. Patients should also avoid using PVA products if they have any eye infections or injuries without consulting a healthcare provider.

Special Precautions

Patients using polyvinyl alcohol eye drops should avoid touching the dropper tip to prevent contamination. Contact lens wearers should remove their lenses before applying PVA eye drops and wait at least 15 minutes before reinserting them. PVA may cause temporary blurring of vision after application, so patients should avoid activities that require clear vision until their vision returns to normal.

Side Effects

Common side effects of polyvinyl alcohol eye drops may include temporary stinging or burning sensation upon application, temporary blurred vision, and mild eye irritation. If these side effects persist or worsen, patients should seek medical attention promptly.

Drug Interactions

There are no known significant drug interactions with polyvinyl alcohol eye drops. However, patients should inform their healthcare provider about all medications, supplements, and herbal products they are taking to ensure safety and efficacy.