Swimming goggles come in a variety of tints and shades to suit different needs. Tinted goggles are designed to reduce the amount of light that enters the eyes, reducing glare and improving vision in bright sunlight or indoor lighting. Different tints also help swimmers to distinguish between different depths of water, and can reduce the strain on the eyes caused by bright light. They also help to protect eyes from the chemicals in swimming pools, and can reduce the risk of eye infections. In addition, some tints can be used to enhance performance by helping swimmers to focus on the water ahead.