The lens is behind the pupil but is not seen when healthy, as it is clear. The pupil is a hole in the center of the iris. The pupils should be the same size and should constrict to a pinpoint when a bright light is shined in the eye. The pupil is the black spot in the center of the eye. ragged edges, although this can occur with aging and is called iris atrophy.Some, but not all, dogs with blue eyes are deaf. The iris can be one of several different colors and some dogs have two different colors. Peering through the pupil, you look through the lens, which is clear, and you may see a bright colorful structure, which is the retina. T his condition causes one of the dogs pupils to be smaller than the other. yellow discoloration, indicating jaundice Anisocoria refers to an unequal pupil size.In health, the conjunctiva should be about the same shade of pink as the gums.Ībnormal findings on the conjunctiva include:
![dog unequal pupil size dog unequal pupil size](https://todaysveterinarypractice.com/wp-content/uploads/sites/4/2016/01/T1601C09_article-header.jpg)
If you stretch the lid more, you will see a pink tissue, which is the conjunctiva. yellow discoloration of the sclera, which indicates jaundice.bruises, which may indicate a local injury or a problem with the clotting system.The white part of the eye is the sclera, which is normally glistening white and has small, thin red blood vessels on its surface.
![dog unequal pupil size dog unequal pupil size](http://www.neonlightsimaging.com/images/cheetaheyes.jpg)
Rest assured, veterinary medicine doesn't check eye pressures with the dreaded 'air puff' test that is common in human ophthalmology.To see the parts of the eye beneath the upper eyelid, pull the upper eyelid up with your thumb to open the eye widely. If your dog has uveitis in one or both eyes, they will have lower than normal pressures. This is a symptom of a wide range of underlying causes, including head trauma. If your dog has glaucoma in one or both eyes, they will have higher than normal pressures. Anisocoria is a condition in which a dogs two pupils are unequal in size. Checking your dog's intraocular pressures can check for glaucoma as well as uveitis. Causes of Unequal Pupil Size in Dogs Anisocoria can occur for a number of reasons, including: Head trauma or injury Brain disorder Corneal ulceration Glaucoma Iris hypoplasia Horner's syndrome Degenerative disease Exposure to chemicals or toxins Whether the abnormal pupil is miotic or mydriatic may depend on the cause of the anisocoria. Additionally, when the skull comes to a sudden stop, the. The stain will collect in the ulcer itself so that, even when excess stain is flushed out of the eye, the stain will still fluoresce under a black light. Concussion of the brain may cause unequal pupils if the injury affects certain areas of the brain. If she were to develop other signs of a concussion such as vomiting, trouble standing or walking, extreme lethargy, tremors, or seizures, then.
![dog unequal pupil size dog unequal pupil size](https://images.wagwalkingweb.com/media/articles/dog/unequal-pupil-size/Unequal_Pupil_Size.jpg)
In a puppy that was playing outside, hitting her head would be the most likely cause, and it should resolve on it's own by morning. All this to say, you may think your dog just has funky tears when in reality he has a lack of them! Staining the eye with fluorescein dye can illuminate any ulcers on your dog's cornea. Anisocoria, or uneven pupil size, can have many underlying causes. Your dog's eyes will actually try to compensate but instead of tears they may produce a thick, sticky discharge. There are certain disease processes that will inhibit tear production. Greater dog affiliation was also associated with smaller overall pupil size change to dogs and larger change to humans, but this did not interact with image. A Schirmer tear test will check the ability of your dog's eyes to create tears. Most eye workups will start with three basic tests: A Schirmer tear test, fluorescein stain, and an intraocular pressure test. Diagnosing the Reason for Your Dog's Anisocoria