The main problems associated with the eyelid are
Entropion and Dystichiasis
Entropion is an eye condition in which all or part of the edge of the eyelid(s) “roll/turn” inwards. This results in the eyelashes rubbing against the surface of the eyeball, causing chronic irritation, abrasion and damage to the cornea.
Although entropion usually affects the lower eyelid(s), it can also occur on the upper eyelid(s).
Usually both eyes are involved, when the condition is referred to as “bilateral entropion. However, the condition may be confined to one eye.
There is documented evidence that the condition has been identified in most breeds of dog. However, some breeds, particularly breeds with pronounced facial folds of skin, are more commonly affected than other breeds. Obviously, the Bedlington terrier does not come within this category.
In Bedlington Terriers entropion generally occurs within the first year. The condition is usually,but not necessarily, bilateral and affects the lower outer part of the eyelid(s) or, in severe cases, the entire lower eyelid(s).
Distichiasis is one of the eye conditions reported in the KC Health Survey (2004) as affecting Bedligton terriers. It differs from entropian in that it is a condition in which extra eyelashes (termed distichiae) grow out from the inner margin of the eyelid whereas entropion results from an inward roll of the eyelid that causes eye irritation from normal eyelashes.
They are usually multiple and sometimes more than one arises from a duct. They can affect either the upper or lower eyelid and are usually bilateral. The lower eyelids of dogs usually have no eyelashes. These hairs may or may not come in contact with the cornea. This depends on whether they are thick/stiff or fine, and in which direction they are growing, i.e. whether or not they are directed inwards).
Distichiasis is generally seen most often in puppies or young adults, and is typically diagnosed before the dog is three years.
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