Optical Instruments: Human Eye

A near sighted person has a far point of $20 \mathrm{cm}$ in front of his eye. What is the power of the lens (in dioptres) which will allow this person to see distant objects clearly?

What is the function of aqueous humour in eyes?

The least distance of distinct vision for a normal eye is

Suspensory ligaments are found in

What is the function of aqueous humour.

Macula lutea is the part of:

Protein found in eye lens is

The vascular layer of the eye is

When you enter a dimly lit room from sunlight at noon. What is the change in the size of the pupil?

Space between cornea and lens is 

Ciliary muscles in the eye:

What happens when a human comes in bright light.

The far point of a normal eye is:

A student studying the similarities and differences between a camera and the human eye makes the following observations:
$\left(\mathrm{I}\right)$ Both the eye and the camera have convex lenses.
$\left(\mathrm{II}\right)$In order to focus, the eye lens expands or contracts while the camera lens moves forward or backward.
$\left(\mathrm{III}\right)$ The camera lens produces upside down real images while the eye lens produces only upright real images.
$\left(\mathrm{IV}\right)$ A screen in camera is equivalent to the retina in the eyes.
$\left(\mathrm{V}\right)$ A camera adjusts the amount of light entering in it by adjusting the aperture of the lens. In the eye the cornea controls the amount of light. The correct statements are :

Which of the following helps to keep the shape of the eye?

A certain far-sighted person cannot see objects closer to the eye than$100 \mathrm{cm}$. The power of lens which will enable him to read at a distance of $25 \mathrm{cm}$ will be 

A presbyopic patient can see objects only when they lie between $50 \mathrm{cm}$ and $200 \mathrm{cm}$ from the eye. Then the focal length of the correcting lens required while reading is 

A myopic patient uses

Loss of ability of eye to focus on near and far object with advancing age is called