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A contact lens is a thin corrective or cosmetic or therapeutic device that is placed on the cornea in the eye. People prefer wearing contact lenses as they do not steam up, give a wider field of vision, and are more comfortable to wear during sports. The types of contact lenses are rigid lenses, soft lenses, disposable lenses, silicone lenses, and scleral lenses. Most people use soft contact lenses, and the different types are daily wear, extended wear, toric, and colored lenses. As the use of contact lenses makes a person more susceptible to eye infections, avoid wearing the lenses overnight, avoid using it while swimming, do not reuse lens solution, do not use water or saline as lens solution, and never use your saliva to wet the lenses.