Sometimes i get scared at night because my eye sight is so poor. is this normal?

Yes: This is a perfectly normal response. You may want to contact a low vision service near you. They may be able to provide you with a vision aid to prevent some of your fear.

It may not be: If you are experiencing significantly poorer vision at night than during the day, you should have your eyes evaluated for the cause. There may be a treatment that will improve your sight and make you feel more comfortable at night.