Well, no, rosacea cannot lead to blindness, so you do not need to worry about it. Generally speaking, rosacea is associated with a chronic skin condition known as acne rosacea. The problem usually affects those with light skin, and is characterized by redness and bumps concentrated on the forehead, nose and cheeks, even eyes. And at this moment, it will just make your eyes become red, even bloodshot. Also, there are some other symptoms such as redness of the eyelids, burning eyes, eye styes, and dry eyes. But on the other hand, some reports have shown that it will not lead to blindness. To treat it, in common, prescription eye drops which will contain steroids can be effective to the red eyes caused by rosacea. Also, according to some experts, patients with it should avoid hot drinks, spicy foods, alcohol.