how does the eye help us to see
Answers
Answer:
- When light hits the retina (a light-sensitive layer of tissue at the back of the eye), special cells called photoreceptors turn the light into electrical signals. These electrical signals travel from the retina through the optic nerve to the brain. Then the brain turns the signals into the images you see.
Tip- Our eyes and brains work together to tell us the size, shape, colour, and texture of an object in a single glance. They tell us how close it is, if it's standing still or approaching us, and how fast it's travelling.
All portions of the eye are so delicate, our bodies protect them in a variety of ways. The eyeball is surrounded by bone in the eye socket (also known as the orbit) of the skull. The eyelids and eyelashes shield the visible area of the eye, preventing debris, dust, and even damaging bright light from entering the eye.
Explanation: The protecting layer is the sclera (SLEER-uh). The cornea, which is the clear front surface of the eye, is surrounded by a thick, fibrous tissue that surrounds the eyeball and adheres to it. The sclera is what we see as the white of the eye. The conjunctiva, a clear skin covering that protects the eye from drying out, sits on top of the sclera.