| Bernese Mt. dog - 7y old
intact female with history of sudden onset
of blindness. No other health issues reported. On
ophthalmic examination dog was bilaterally blind
with almost completely absent pupil light response
when red light (630 nm, 200 kcd/m2) was used, while
she had good pupil light response when blue light was used (480 nm,
200 kcd/m2). ERG amplitudes were normal in both eyes. Dog did not have
signs of intraocular inflammation. Fundus examination revealed presence
of thin linear hyper-reflective bend OU, which was most prominent
in the area centralis, however was expanding in the nasal superior
retina also. Arterioral attenuation was present OU. Due to history
of sudden onset of blindness, normal ERGs, good pupil constriction
with blue light and poor/absent constriction to red light,
diagnosis of immune-mediated retinitis was established. |
