Contact lens solution, also known as SALINE solution, is a sterile solution used to clean and store contact lenses. It is typically composed of a mixture of sodium chloride, boric acid, and potassium chloride in water. SALINE solution helps to keep contact lenses moist and comfortable, and can also be used to rinse away debris and foreign particles from the lenses. It is important to use only sterile contact lens solutions to avoid eye infections.