Nutritional Cataracts

By Dr. Lisa Meek, Member ACVO A nutritional cataract is caused by either a deficiency or excess of a nutrient resulting in a loss of transparency of the lens. Nutritional cataracts have been identified in various species, including rats, pigs, wolves, fish and guinea pigs as well as dogs and cats. In dogs and cats ...

Canine Cataracts

Definition of Cataracts The word cataract literally means ‘to break down’. This breakdown refers to the disruption of the normal arrangement of the lens fibers or its capsule, which results in the loss of the transparency of the lens and a reduction in vision. Cataracts often appear to have a white or crushed ice appearance ...

What is Glaucoma?

There are 2 classifications of glaucoma – Primary and Secondary. Primary glaucoma occurs without previous trauma or ocular disease, and will eventually affect both eyes. Secondary glaucoma is a consequence of some other disease, such as ocular inflammation, lens dislocation, intraocular tumors, or trauma. My first reaction was this can’t be primary as the numbers ...

What is Primary Lens Luxation (PLL)?

What is Primary Lens Luxation (PLL)?
The canine eye has the same general design as the human eye. Light travels through the cornea, through the watery aqueous chamber, enters the pupil, traverses through the lens, then the vitreous chamber, and finally is absorbed by retinal receptors. The lens is held in place by a network of tiny fibers, called zonules, that ...

Myokymia: Continuous Muscle Fibre Activity

Myokymia: Continuous Muscle Fibre Activity
Continuous muscle fibre activity was observed in a crossbred dog, a Yorkshire terrier, a border collie and three Jack Russell terriers. The clinical signs consisted of episodes of generalised myokymia which developed into muscle stiffness and delayed muscle relaxation and generally led to the dogs collapsing into lateral recumbency. These episodes were preceded by intense ...