Excerpt: Pet rabbits may experience a variety of ophthalmic diseases. These ophthalmic conditions are often different than eye diseases of the dog, cat, or other pet rodents. The more common etiologies (causes) of eye problems in the rabbit include nutritional deficiencies, infections, environmental and management problems, genetic influences, and congenital malformations. Important ocular disorders of the rabbit include epiphora, conjunctivitis, blepharitis, uveitis, and glaucoma. (See article for symptoms and treatments of these issues)
I took the photo below at a rabbit show yesterday of a Holland Lop with a vertical white line down the center of each pupil (in the eye, not on the cornea). I sent it to Dr. Hreiz of ARBA and thought others might find his reply informative:
"E. cuniculi is your #1 differential for stromal masses such as this. The parasite migrates all over the spinal cord and even can be in the eye where they form abscesses such as this. Your other differential would be a stromal abscess of bacterial origin.
This individual should prophylactically treat this rabbit with fenbendazole (Safeguard or Panacur) at 30 mg/kg once a day for 28 days is the treatment. This organism is shed via urine so any rabbits in close proximity should be treated as well. If signs do not resolve, then an antibiotic would be good to give a try."