Why does eyes hurts when entering a theater from bright area to dark areas?

When you enter a theater from a bright area to a dark area, your eyes need to adjust to the sudden change in light levels. This can cause your eyes to feel uncomfortable and even hurt.

The reason for this is that your eyes are constantly adjusting to different light levels. When you move from a bright area to a dark area, your pupils need to dilate (get bigger) to allow more light to enter the eye. This process takes a few seconds, and during this time, your eyes may feel uncomfortable.

In addition, the sudden change in light levels can also cause your eyes to produce more眼泪. This can further irritate your eyes and make them feel even more uncomfortable.

If you find that your eyes hurt when you enter a theater, there are a few things you can do to help reduce the discomfort. First, try to gradually adjust to the change in light levels by closing your eyes for a few seconds before you open them again. You can also try wearing sunglasses or a hat to help block out some of the bright light.

If your eyes continue to hurt after a few minutes, you may want to see an eye doctor to rule out any underlying medical conditions.