Aha! I want to say, you are a romantic person, are you? That is because you like to read love stories of novels. Yes, most of the people close their eyes when they kissing. And there still not bad for your health to open the eyes when you kissing. However, most of the people say, the kissing is a wonderful and romantic thing, and it is very important for your relationship. If a man open the eyes when he kissing you, that may mean he is not pay full attention to you and not that care about you and believe in you. Some people think, to the women, when she is kissing, she still open her eyes, that will only mean she is curious to the express of his lover. You can see how unfair about the two opposite gender! The thing is only relative to the mental problem other than physical health. That is my opinion for you to reference!