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Chatting late night with friends in dark can cause Temporary Vision Loss

Transient smartphone blindness

Continuously Staring at your smartphone in the dark , may cause temporarily vision loss in one eye.

In a warning to those who use Smartphones / Devices in sleep mode and keep gazing at Smartphones in Dark, Researchers have found two women who were affected by ” Transient smartphone blindness” – a condition where in any one can get the feeling of Vision loss in one eye after gazing at smartphones in the dark for longer duration.

How all this came in Lime Light

A 22-year-old woman in England thought she was going blind in one eye. She could always see fine out of her left eye. But on some nights, the right eye failed her. All she could see out of it were vague shapes in the room.

At first, it happened about two or three times a week. Then it started happening every night.

When she went to the doctor, her vision appeared normal. So did brain scans. But still it’s not Normal as it’s a Daily trend.

Around the same time, another woman noticed the same thing. On some mornings, she’d lose vision in just one eye for up to 20 minutes. It was bothersome enough to land her in the emergency room.

Vision loss in one eye can be a sign that a person is having a small stroke, which is why one of the women was put on blood thinners and the other got a brain scan. It can also signal a compressed optic nerve.

Although most people view screens binocularly, people frequently use smartphones while lying down, when one eye can be inadvertently covered. Smartphones are now used nearly around the clock, and manufacturers are producing screens with increased brightness to offset background ambient luminance and thereby allow easy reading.

In both cases, nothing bad was going on. It’s just that one retina was adapted to light, and the other to dark. The Hypothesis could be ” the symptoms were due to differential bleaching of photopigment, with the viewing eye becoming light-adapted while the eye blocked by the pillow was becoming dark-adapted. Subsequently, with both eyes uncovered in the dark, the light-adapted eye was perceived to be “blind.” The blibdness may last from several minutes to couple of hours, reflecting the time course of scotopic recovery after a bleach.”



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