Lec-vision-hearing2025

The refractive power of the lens of the eye is measured in __________.

Diopters (D)

The __________ of the retina is the light-sensitive membrane that forms the innermost layer of the eyeball.

Retina

The loss of accommodation for near objects with age is known as __________.

Presbyopia

The part of the eyeball covered by conjunctiva is known as __________.

Bulbar portion

The __________ is the process by which the lens changes shape to focus on objects at different distances.

Accommodation

Glaucoma is a disease of the eye characterized by __________ intraocular pressure.

Pathologically high

The maximum wavelength in the visible spectrum is found in the color __________.

Red

The __________ is responsible for black and white vision in low light conditions.

Rods

The __________ of the eye is the angle of 160° in the horizontal meridian and 135° in the vertical meridian.

Visual field

The two types of photoreceptors in the retina are __________ and __________.

Rods and cones

Sound waves travel through the __________ and produce vibrations in the tympanic membrane.

External auditory meatus

A __________ lens is used to correct myopia by allowing light rays to diverge before entering the eye.

Biconcave

The __________ is a receptor organ for hearing located in the cochlea.

Organ of Corti

When sound waves enter the cochlea, they stimulate __________ which leads to the generation of auditory impulses.

Hair cells

The condition known as __________ involves the inability to appreciate one or more colors and is often sex-linked.

Color blindness

The __________ is part of the brain where visual impulses ultimately reach after passing through the optic pathway.

Visual cortex

In astigmatism, light rays are not brought to a sharp point on _________.

Retina.

__________ reflexes are natural reflexes present since birth, while conditioned reflexes develop after learning.

Unconditioned

An example of a monosynaptic reflex is the __________ reflex, elicited by the stimulation of muscle spindle.

Stretch

The __________ of the eye is maintained by the aqueous humor.

Intraocular pressure