How The Eye Functions
Eyes are a complicated organ that has an vital purpose. Each eye has a specific role to play in the process of visual perception that enables us to be able to see. Any problem in any area of this complicated system could cause issues in your eyesight. The eye could be imagined as a digital camera, except that there is no requirement to wait until the picture develops. the light rays that bounce off an object are transformed into a picture that can be seen in real-time. The iris functions like the diaphragm of cameras to regulate what size the pupil. In situations with lots of light, the iris shrinks pupils size, allowing less light through. In contrast when there is low light the iris allows the pupil expand to let more light to enter the eye. The lens and cornea are used to focus light rays on special light-sensitive tissues at the rear of the eye, called the retina which is similar to the film used in cameras. The retina's cells convert sunlight into electric signals transmitted ...