The Eyeball

Front Of Eye

100

The curved, clear, protective layer at the very front of eye.

Cornea

200

The colored muscular portion of the eye which opens and closes depending on light intensity

Iris

300

The absence of Iris that lets light into the eyeball

Pupil

400

The watery fluid at the front of the eye that baths the cornea, iris, and front of the  lens. 

Aqueous humour

500

This part of the eye is convex shaped and clear. It focuses the light onto the photoreceptive cells at the back of the eye.

Lens

Back and Middle of the Eye

100

For the light to reach the back of the eye it has to pass through a clear jelly like fluid called the _____________________.

Vitreous Humour

200

Once the light passes through the vitreous humour it will strike the photo receptive cells at the back of the eye. This layer of the back eye is called the _________________. 

Retina

300

The Retina will attach to the part of the eye that transmits information to the brain. What is this part?

Optic Nerve.

400

If I had night vision...the back of my eye would have this layer which is reflective and strengthens the amount of light that stimulates the retina more in low light scenarios.

Tapetum

500

The white outermost part of the eye. 

Sclera

Focusing light Rays

100

To focus light rays on a single point a lens must _________________ shaped.

Convex

200

The single point that light is focused on is called the _______________ _______________.

Focal Point 

300

If your eye lens doesn't properly converge light directly onto your retina you may need these.....

Glasses

400

The portion of the retina that is directly in line with the front your eye or at center vision.

Macula

500

The rest if your retina that is not your macula would be capturing light from your ________________ vision.

Peripheral

Increasing focal power

100

The ______________ muscles are required to increase and decrease the focal power of the lens.

Ciliary

200

If you are trying to see something up close your ciliary muscles will _____________ the amount of curvature in the lens.

Increase

300

As people get older there ciliary muscles will get _______________ causing them to need reading glasses to see up close.

Weaken