Glaucoma is increased pressure within the eye. Cells inside the eye furnish a clear fluid ("aqueous humor") that maintains the eye's shape and nourishes the tissues inside the eye. The equilibrium of fluid production and drainage is responsible for maintaining normal pressure within the eye. In glaucoma, the drain becomes clogged, but the eye continue producing fluid, resulting in increase eye pressure, which can no ifs ands or buts can cause the eye to stretch and enlarge, in increasing to blinding the eye. Glaucoma is not itsybitsy to humans - it can influence your pets, too!
Glaucoma is classified as whether original or secondary in animals. original Glaucoma is an inherited condition, occurring breeds ranging from American Cocker Spaniels and Basset Hounds to Chow Chows, Shar Peis, Labrador Retrievers, and Arctic Circle breeds (Huskies, Elkhounds, etc). Touhg it is rare in cats, it can occur and is commonly secondary to persisting uveitis. original Glaucoma ordinarily begins in one eye, but in most pets, it eventually involves both eyes, leading to complete blindness. Secondary Glaucoma occurs when other eye diseases cause decreased fluid drainage. Tasteless causes of secondary glaucoma are inflammation inside the eye (uveitis), developed cataracts, eye cancer and persisting retinal detachment.
Determining if your pet has original or secondary glaucoma is important, as both the rehabilitation and prognosis vary for each type. (Many pet assurance policies cover the tests and specialists needed to rate your pet, so consult your provider.) Veterinary ophthalmologists use slit lamp biomicroscopy, indirect ophthalmoscopy, and gonioscopy to decree the type and cause of glaucoma in your pet. Gonioscopy can help to decree how predisposed your pet's remaining optic eye is to construct glaucoma when original glaucoma is suspected. This test involves placing a extra experience lens on the eye, allowing test of the drainage; it is commonly performed under sedation or anesthesia.
Glaucoma can influence the eye(s) of your pet(s) in the following ways:
o Vision Loss - Pressure damage to the optic nerve and decreased blood flow to the retina, the "film in the camera," results in loss of vision. However, if the eye pressure remains uncontrolled, the retina degenerates and vision is enduringly lost. Permanent blindness can occur within several hours if the pressure is very high and the glaucoma develops rapidly;
o Unfortunately, the first eye to construct original glaucoma in dogs is commonly already blind by the time the disease is recognized. For this reason, rehabilitation in these cases is directed at relieving ache in the blind eye and preventing or delaying glaucoma amelioration in the other eye. Gonioscopy of the remaining optic eye helps decree how to treat this eye;
o Pain - Increased intraocular pressure is painful. Dogs, cats (and even human) have normal intraocular pressures in the middle of 10-20 mmHg. Glaucoma often results in pressures 45-65 mmHg in dogs and cats, which is significantly higher than in humans with glaucoma, manufacture it much more painful for your pet. The pain persists in the form of a constant sick or migraine. This ache can corollary in lethargy, irritability, or decreased appetite, but is often unapparent to the owner, so be observant!
The only way to ascertain if your pet is suffering from glaucoma is to have the intraocular pressures measured by a veterinarian. Signs of glaucoma can include a red or bloodshot eye and/or cloudy cornea. vision loss is also characteristic of glaucoma. However, loss of vision in one eye is often not safe bet because animals compensate with their remaining eye. Eventually, the increased pressure will cause the eye to stretch and come to be enlarged. Unfortunately, eyes are commonly enduringly blind by the time they come to be enlarged. If your dog has lost one eye to original glaucoma and the other eye is at risk of developing glaucoma: The mean timeframe for an additional one attack to occur in the remaining eye is 8 months; inhibitive medical therapy for the "good" eye delays the onset of glaucoma by approximately 23 months.
Since glaucoma occurs because fluid is not draining from the eye fast enough, the logical rehabilitation is to open up the drain, however, opening - and retention open - the drain is difficult. Therefore, many glaucoma therapies are also aimed at decreasing fluid production by the eye.
Medical Therapy - While there are varied eye drops and pills that help decrease fluid production or increase fluid drainage from your pet's eye, they rarely control glaucoma long-term. Consequently, they are used mostly to help prevent/delay glaucoma's onset in the remaining optic eye and as temporary rehabilitation until surgical operation can be performed in the affected eye.
Surgical Therapy - The type of surgical procedures available for glaucoma depends upon whether the eye still has the inherent for vision. For optic eyes, intraocular pressure can be reduced by performing a cycloablation policy and a drainage implant procedure. For enduringly blind eyes, the eye can be removed with the choice of placing a sterile prosthetic ball implant in the eye socket prior to skin closure, an implant located inside the eye giving your pet a partially artificial eye, or an injection into the eye that kills the fluid-producing cells and reduces the pressure.
The best policy for your pet depends on the type of glaucoma, the inherent for vision, and your preference for the cosmetic appearance of your pet's face. The key to having the best opening of preserving vision is early detection and regular ophthalmic examinations.
Retinal Detachment Surgery:Your Pets and Glaucoma
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