light

conjunctiva

Delicate membrane lining the eyelids and covering the eyeball

pupil

Opening in the center of the iris (black) where light enters. size controlled by the iris.

inverted

upside down

aqueous humour

watery liquid that protects the lens of the eye and supplies the cornea with nutrients

fovea

"Point of central focus". Spot on the back of the retina that has more cones that anywhere else. Helps us see fine detail

iris

A ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening and amount of light getting in.

choroid tissue

A thin layer of tissue that forms part of the middle layer of the wall of the eye between the sclera (white outer layer of the eye) and retina (inner layer of nerve tissue in the back of the eye). The choroid is full of blood vessels that bring oxygen and nutrients to the eye.

translucent

Allowing some light to pass through but not as a clear image

cornea

Clear membrane at the front of the globe covering the iris, pupil, and anterior chamber. Responsible for 60% of the eyes focusing power. Contains 5 layer.

luminous

Giving off light

retina

Light sensitive layer of the eye; contains rods and cones. made of receptors (cones and rods).

ciliary muscle

Located in the eye; changes the lens shape.

sclera

The "white" of the eye Dense fibrous opaque outer coat enclosing the eyeball except the part covered by the cornea

optic nerve

The nerve that carries neural impulses from the eye to the brain

blind spot

The point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there

optical illusion

an optical phenomenon that results in a false or deceptive visual impression

rods

are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells. Rods are concentrated at the outer edges of the retina and are used in peripheral vision. On average, there are approximately 125 million rod cells in the human retina.[1] More sensitive than cone cells, rod cells are almost entirely responsible for night vision.

vitreous humour

clear gel filling the inside of the eye that fills the space between the lens and retina

suspensory ligament/muscle

controls the shape of the lens

receptors

detects the light (cones and rods).

opaque

does not let light through

plane

flat or can be used to describe an angle

angle of incidence

from normal to the ray of light hitting the mirror

angle of refraction

from the normal to the bent/refracted ray.

transparent

lets all light through

angle of reflection

normal to the reflected ray

cones

one of the two types of photoreceptor cells that are in the retina of the eye which are responsible for color vision as well as eye color sensitivity; they function best in relatively bright light.

image

projection of the object

mirror image

reflection of the object

dispersion

splitting of white light into the colour spectrum