Which of the following gives the correct path for light rays entering the human eye?

Options

A. Sclera, retina, choroid, lens, cornea
B. Fovea centralis, pupil, aqueous humour, lens
C. Cornea, pupil, lens, vitreous humour, retina
D. Optic nerve, sclera, choroid, retina, humours

Explanation

To determine the correct path for light rays entering the human eye, we can break down the process step by step:

### Step-by-Step Solution:

1. **Cornea**: Light rays first enter the eye through the **cornea**. The cornea is a transparent, protective layer that covers the front of the eye. It plays a crucial role in bending (refracting) the light rays to help focus them.

2. **Pupil**: After passing through the cornea, the light rays enter the **pupil**. The pupil is the opening in the center of the iris (the colored part of the eye) and regulates the amount of light that enters the eye. The size of the pupil can change depending on the lighting conditions.

3. **Lens**: From the pupil, the light rays then pass through the **lens**. The lens further refracts the light and helps to focus it onto the retina. The lens can change shape to adjust the focus for objects at different distances.

4. **Vitreous Humor**: After the lens, the light travels through the **vitreous humor**, which is the clear gel-like substance that fills the space between the lens and the retina. It helps maintain the shape of the eye and allows light to pass through to the retina.

5. **Retina**: Finally, the light rays strike the **retina**, which is the innermost layer of the eye. The retina contains photoreceptor cells known as rods and cones that detect light and convert it into electrical signals that are sent to the brain for visual processing.

### Conclusion:
The correct path for light rays entering the human eye is: **Cornea → Pupil → Lens → Vitreous Humor → Retina**.