<unk>  are lubricating eye drops used to relieve dryness and irritation of the ocular surface. Dry eye syndrome (keratoconjunctivitis sicca) is a common ocular surface disorder and is characterized by disruption of the<unk> film and increased inflammation. The<unk> film coats the surface of the eye and is composed of 3 layers: an aqueous, lipid, and mucous layer. The aqueous layer consists of a mixture of electrolytes, enzymes, antibodies, antimicrobial proteins, and other compounds. The lipid layer consists of fatty compounds that are responsible for decreasing evaporation of the<unk> film. The mucous layer contains mucins, gelatinous glycoproteins, which allow for an even distribution of the<unk> film over the corneal surface and decreased friction during blinking.<unk>  are used to supplement a patient's naturally-produced<unk>  and increase eye lubrication by mimicking characteristics of the<unk> film.<unk>  can be supplemented with other treatments to treat dry eye syndrome and are available over the counter.<unk>  are also used to moisten contact lenses and in eye examinations.
Artificial tears
Bionic contact lens
Whitfield's ointment
Topical steroid
Contact lens
Fundal massage
Eyelid revision
Laser thermal keratoplasty