Question

Briefly describe the pathway of light through the human eye to the retina. (right sequence)

make sure you have included all the components the light goes through in the human eye. It is essential to provide the components in the right sequence, starting from the more exteriorly located.

Answer 1

The components of the eye are:

1. Sclera ( White part of the eye)

2. Pupil (The black circular opening)

3. Iris (Surrounds the Pupil)

4. Cornea (Covers the Iris and Pupil)

5. Lens (transparent body)

6. Retina ( detects the light and turns into electrical impulse)

Pathway of light through the human eye to the retina:

First light reflects - enters through cornea - passes through watery fluid aqueous humeour - then pupil - then lens - Lens change the thickness and bend light which will focus light on the retina - In the retina cones and rods are present (Photoreceptors) - If it color or any other detailing the cones will identify which are majorly present in the Macula or central area of the retina. - If it is poor lighting or for night vision the rods which are located in outer and peripheral areas of retina helps us to detect. - The retina translates into electrical impulse which are carried to the breain by the option nerve. - Finally the visual cortex of the brain gives the final image.