A corneal ulcer, or ulcerative keratitis, is a lesion that occurs on the cornea, the transparent region at the front of the eye. This condition can be superficial or deep and is especially common in Shih Tzu dogs, due to their brachycephalic conformation that exposes more of the eyes. When symptoms such as redness in the conjunctiva, pain and closing of the eyelids appear, it is crucial to perform a complete ophthalmic examination. The fluorescein test, which highlights the lesion in green, is essential to determine the extent and depth of the ulcer and define the appropriate treatment, whether clinical or surgical.
