If you cry a lot, would you eventually go blind?

No, you would not go blind, even though the composition of emotional tears are different.

Simply no, But when humans cry in response to stress, their tears contain a number of stress hormones and other chemicals. Researchers believe that crying could reduce the levels of these chemicals in the body, which could, in turn, reduce stress.

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.