Potentially sensitive content.
Tests 
What can justify the application of a product directly into the eyes of a rabbit without local anesthesia (often chosen because they do not secrete tears, making it impossible for them to expel the product from their eye), which can cause lesions and perforation of the eyeball? Animals feel pain and fear, and they suffer intensely when they are poisoned, cut open, blinded, electrocuted, dismembered, or infected with deadly diseases. In addition to being immoral and extremely cruel, animal testing and experimentation are useless: animals are not models for humans. For example, penicillin kills guinea pigs but is inactive in rabbits; aspirin kills cats and causes birth defects in rats, mice, guinea pigs, dogs, and monkeys; and morphine, a tranquilizer in humans, stimulates goats, cats, and horses. Also, methods exist, such as the reproduction of artificial skin from human cells and computer simulations, which are just as effective, in addition to often being cheaper.