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Night mode is a feature that's been on smart phones for a while now. It's a mode where your phone reduces the blue light and brightness of your phone and it is generally better than the normal mode when it comes to you eyes. Night mode has many advantages like
HELPING YOU SLEEP BETTER: Blue light has a certain effect to it. It is capable of waking you up and keeping you alert the same way coffee does. So by switching to night mode, you reduce the blue light that's entering your eyes and as a result, make it easier for yourself to sleep
PREVENTING RETINAL DAMAGE: . People who use their phones, laptops and tabs are very likely to have macular degeneration, which can result in blurry vision and also blindness. It's an irreversible sickness.
Blue light is very bad for photoreceptor cells and they don't repair nor grow back once their damaged
This is for heavy device users though. For normal everyday use, it is not necessarily inevitable
REDUCE RISK OF DEPRESSION, DIABETES AND CARDIOVASCULAR ISSUES: Blue light affects more than just the sleep of people who use it at night. In fact, if you’re sleep deprived, you're at risk of depression, diabetes, and cardiovascular issues.
According to WebMD, 90% of people with insomnia have another health condition too. Once again, blue light isn’t all bad, and in moderate amounts can be good for your health.
All these are the adverse effects of blue light on the human body but can easily be worked out if we use night mode