Baseball sunglasses are as important as any other protective bodywear in a game. Sports sunglasses are indispensable in daylight games. Without them, trying to catch a ball, particularly a ball hit up high, can be difficult. The sun in your eyes can cause eyestrain and increase the chance that the ball will be missed. According to Prevent Blindness America, more than 40,000 people a year suffer sports-related eye injuries.