1. Excise the hyperplastic gland, 100- 150 yuan. The third eyelid gland is a part of lacrimal gland, which secretes about 30%-50% of the total tears. Therefore, after adenoidectomy, with the increase of dog age, it may lead to dry eye.
2. Catgut embedding surgery, RMB 300-350, reset hyperplastic gland, keep the third eyelid gland, and avoid iatrogenic dry eye.
Extended data:
Dogs' eyesight is only about three-quarters of that of humans, and among all animal species, dogs' eyesight is about medium. The dog can only see 25 degrees with one eye, so it can't see the nearest distance ahead. The lens of a dog's eyeball is relatively large and deformed like a horse's eyeball, so it is impossible to adjust the sense of distance. Twenty or thirty meters is probably its limit.
Dogs have a special ability to detect moving objects; They can detect images that move 70 lines per second, while ordinary TV images move 60 lines per second. Dogs have better eyesight than people in dim light. Dogs are natural carnivores and live by hunting, so they also have considerable vision in the dark.
Dogs' eyes can see short-wavelength colors. In addition, the dog's cornea is bigger, which allows more light to enter the eyes, so it is easier to see things in dim light. But in the darkness without light, dogs can't see.
Baidu Encyclopedia: Dogs