In some severe cases, the congenital defect presents as anophthalmia (eye is absent entirely).
Microphthlamos is defined as an abnormal reduction in ocular size and can range from a globe that is only slightly smaller than normal to one that is only vestigial.
Affected dogs have a characteristic shrunken orbit, narrowed palpebral fissure and poor corneal development. Blindness of the affected eye is associated with this condition.
Diagnosis is based on visual inspection of the eye. Histological analysis of tissue is usually confirmatory.
There is no treatment for this condition, and cosmetic enucleation is usually required.
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