Question

what happens to your vision when you go out side on a very bright summer day and enter in to your room why​

Answer 1

You've probably noticed that pupils can change size in response to light. Outside on a bright sunny day, your pupils become very small. This lets less light into the eye since there's plenty available. When you move to a dark place, your pupils open up to become as large as possible.

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Answer 2

Explanation:

your vision become darkened because during very bright summer day intensity of light that enters your eye is more when compared to normal days. so your iris contracts when bright light enter the eye ball. if you enter a dark room at this situation you can't see anything immediately but gradually your iris relaxes to allow more intensity of light in a dark room,gradually your vision becomes normal.