The respiratory tract is the path of air from the nose to the lungs. It is divided into two sections: Upper Respiratory Tract and the Lower Respiratory Tract. Included in the upper respiratory tract are the Nostrils, Nasal Cavities, Pharynx, Epiglottis, and the Larynx.he Respiratory System is crucial to every human being. Without it, we would cease to live outside of the womb. Let us begin by taking a look at the structure of the respiratory system and how vital it is to life.
If your pet does not have cataract surgery, we recommend that a complete ocular examination with intraocular pressure evaluation be performed every 3-6 months to prolong comfort for your pet, and the ophthalmologists may recommend eye drops to try to prevent the secondary complications of cataracts.
Dogs with PRA usually develop cataracts that are termed âtoxic cataractsâ, in the mid to late stages of PRA. Cataracts are opacities within the lens, and usually both eyes of dogs with PRA develop cataracts. There are many causes of toxic cataracts, but the most common cause in dogs is PRA. As the retinal tissue slowly dies, it releases toxic by-products of cell death that are absorbed by the lens, causing lens damage and cataract development.