What type of glasses are said to improve sleep quality?

Blue light glasses are designed specifically to filter out harmful blue light emitted from digital screens such as those on computers, smartphones, and tablets. Exposure to blue light, especially in the evening, can interfere with the body's natural circadian rhythms and suppress the production of melatonin, the hormone responsible for regulating sleep. By wearing blue light glasses, especially before bedtime or while using devices, individuals may reduce the impact of blue light on their sleep quality, promoting better rest at night.

Reading glasses, while they may enhance clarity for close-up tasks, do not have the same effect on blue light exposure and, therefore, do not specifically improve sleep quality. Sunglasses, aimed primarily at protecting eyes from UV light outdoors, are not relevant to sleep quality as they are not intended for use with screens. Transaction glasses, which generally refer to eyewear used during specific activities and do not have a standard definition, also do not relate to blue light or sleep improvement.