Bright light can interrupt sleep quickly, so many people use a sleep mask.

The National Sleep Foundation suggests how to choose the right one:

• Consider whether you need a sleep mask that provides total blackout, or one that provides darker conditions in a room that’s already fairly dark.
• Look for a mask that fits across the bridge of the nose. Invest in a quality mask with a nose flap to help block more light and provide a better fit.
• Opt for a mask with cavities that alleviate pressure around your eyes.
• Find the right fabric that feels comfortable, is easy to wash and doesn’t trigger allergies.

Source: HealthDay