Give the green light to dogs when they are old or have cataracts: just like people, for purebred dogs, hereditary diseases, such as cataracts, are particularly prone to occur early, so they should be sent to animal hospitals for examination and treatment!
Dogs only suffer from glaucoma because of old age or disease, so they emit green light: glaucoma is also an old-age disease that pet dogs, especially purebred dogs, are prone to. At this time, we can observe whether the dog's eyes have obvious green light, which does not appear at night, but has unnatural green light in the daytime sun. If there is, we can send the dog to hospital quickly according to the picture to avoid blindness!
Many dog owners will find that dogs' vision at night is still clearer than that of human beings, because dogs' corneas are larger than human beings, which can let more light into their eyes, and there is a structure called choroidal layer in dogs' eyes, which can enhance weak light and make dogs see better than human beings in dim light! But if there is no light source at all, the dog can't see anything! Because dogs have choroidal layer in their eyes, terrible yellow, green or red spots often appear in their eyes under strong light, so please don't be afraid! This is just caused by the different eye structures between dogs and people!
The above picture shows the eyes of a dog with cataract, which are obviously white and have a light blue light, and need immediate treatment!
The picture above shows a case of glaucoma in one eye. Dogs' eyes will also emit abnormal green or blue light in the daytime sunlight or natural light, so they must be sent to a doctor immediately to avoid the situation that their eyes are more seriously ill or they are easy to fall and get injured when walking because of visual effects!
The picture above shows a pet dog with green eyes in the shadow or at night. Please rest assured that everything is normal!