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==Introduction==
Glaucoma is rarely diagnosed due to lack of tonometers. Early stages often escape diagnosis due to the subtlety of the signs. It is commonly secondary to equine recurrent [[Donkey - Uveitis|uveitis]].
==Clinical Signs and Diagnosis==
A '''swollen globe''' should always be checked for increased intraocular pressure (IOP). Raised IOP is measured using a tonometer, following topical and [[Local Anaesthetics|local anaesthesia]] to reduce the pull of the extra ocular muscles.
Signs are:
* Corneal oedema
* Blindness or visual defects
* Dilated, fixed pupil
[[Lens Diseases - Donkey#Lens Luxation|'''Lens displacement''']] can cause secondary glaucoma; <u>mydriatics are contraindicated in this situation.</u>
==Treatment==
Immediate action is required to reduce the IOP. Medical treatment is usually attempted first but response to treatment is variable. Consult an ophthalmology textbook for standard treatments or consult a specialist.
* '''Miotics''' are indicated except for cases of [[Uveitis - Donkey|uveitis]] and [[Lens Diseases - Donkey#Lens Luxation|displaced lenses]]
* '''Surgery '''can be the best option
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