Question: what makes a person who has just looked to strong sunlight not to see clearly for a shot time

Gliday Yuka answered on 16 Jul 2025:

When you look at bright sunlight and then can’t see clearly for a short time, it’s because your eyes need a moment to adjust. The bright light overwhelms the retina, the part of your eye with cells (called photoreceptors) that detect light. These cells, especially the cones that handle bright light and color, get temporarily “stunned” by the intense light, like when you’re blinded by a camera flash. This causes a brief afterimage or blur because the retina’s chemicals, like rhodopsin, need a few seconds to reset and adapt to normal light levels.

For example, if you’re outside on a sunny day and then walk into a dim room, your eyes take a bit to adjust because the pupil (the hole letting light in) also needs to widen to let in more light. This is totally normal and usually clears up quickly as your eyes adapt.