KCS, also known as keratoconjunctivitis sicca or Dry Eye, is a condition in which the tear ducts are unable to produce enough tears to adequately moisturize the eye. The condition can occur in both cats and dogs. In dogs the condition is most often the result of an autoimmune disorder, trauma to the eye, or the effects of distemper infections.
Dog owners should know what to look for in their dogs when considering the possible existence of dry eye. The most obvious warning sign is a thick yellow-green discharge of mucous that forms at the corner of the eyes. Inflammation of certain parts of the eye, like the thin membrane that lines the eyelid or the cornea, could also occur. Owners should also be aware that certain breeds of dog are more susceptible to dry eye.
The number one priority in treating dry eye in dogs is tear replacement. This is done with drops, but they must be applied as often as 4 to 6 times a day. After all, tear production is normally constant, so frequent application is a must. In addition, adding a lubricant to the tear-replacement solution is important as well, because the artificial tears do not lubricate nearly as well as natural tears.