A viscous preparation designed for ocular application to relieve discomfort and dryness is formulated to provide extended lubrication and protection to the eye’s surface. These products typically contain demulcents like carboxymethylcellulose, hyaluronic acid, or carbomer, which increase the tear film’s viscosity, thereby reducing the rate of tear evaporation and offering prolonged hydration. An example includes a clear, non-greasy substance that can be applied several times daily to alleviate symptoms associated with dry eye syndrome or environmental irritants.
The significance of these formulations lies in their capacity to improve the quality of life for individuals experiencing chronic or episodic ocular dryness. They create a protective barrier, minimizing friction between the eyelid and cornea, which reduces irritation and supports corneal healing. Historically, such preparations have evolved from simple saline solutions to complex formulations with enhanced residence time and targeted therapeutic effects, becoming a mainstay in the management of various ocular surface diseases.
