What happens to your eyes if you frequently stay up late looking at your phone?

Staying up late frequently to look at mobile phones often leads to eye dryness, eye irritation, visual fatigue, or visual field defects.

1. Eye dryness and irritation: Frequent late-night phone use reduces the number of times a person blinks, decreasing tear film renewal. Over time, this deprives the conjunctiva and cornea of adequate lubrication from the tear film, leading to symptoms such as dry and irritated eyes. If not addressed promptly, the risk of developing dry eye syndrome or ocular surface damage increases.

2. Visual fatigue: When the eyes are not allowed sufficient rest due to prolonged phone use at night, they become overly fatigued, increasing ocular strain and resulting in significant visual fatigue. Long-term effects may include worsening myopia, progression from pseudo-myopia to true myopia, or further deterioration of existing myopia.

3. Visual field defects: Using a phone late at night in dim lighting creates a stark contrast between the dark environment and the bright screen. This intense stimulation can adversely affect the pupils over time, potentially leading to glaucoma, accompanied by symptoms such as eye pain and vision loss. In severe cases, it may result in visual field defects or even permanent vision loss.

In addition, frequent late-night phone use may also contribute to retinal damage or macular disease. It is recommended to use your eyes wisely and maintain healthy visual habits.