The Eye And The Brain Crossword Puzzle

The Eye and the Brain

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Across

Down

Tiny spot on the retina where there are a higher concentration of cones and where light is focused on (cental gaze)

Outside part of the brain, over 50% of which is devoted to vision

Long-sighted, the power of the eye's optical system is insufficient to focus the light on the retina

The part between the optic nerves and the brain hemispheres

Neurons in the retina that send their info to the LGN via the optic nerve

Liquid between the cornea and the pupil that aids in refracting the light towards the retina

The outer layer/front part of the eye, the first and most powerful lens in the eye's optical system

The ciliary muscle changes the shape of the lens

20:20 vision, the power of the eye's optical system matches its length

A bit between the eyes where the optic nerves from both eyes cross/converge

The blind spot in our vision + the entrance to the optic nerve

Light travels faster through the air than through the cornea which makes it bend

Part of the retina where there are a higher concentrations of rods

Part of a camera that controls how much light enters the camera (pupil/iris)

the pathway between the optic chiasma and the brain.

having an outline or surface that curves inwards like the interior of a circle or sphere

Rods and cones on the retina

What happens to your rods if there is too much light that they are used to

Light sensitive part at the back of the eye - an extention of the central nervous system that converts light rays into electrical signals and sends the to the brain through the optic nerve

Photoreceptor that allows us to see black and white (only 1 type) - low resolution, high sensitivity

Less powerful than the cornea, but works with the ciliary muscle to be adjustable (accommodation) - this is how we focus

having an outline or surface curved like the exterior of a circle or sphere

Coloured bit of the eye that controls how much light gets in - also responds to strong emotions

Short-sighted, the lens/optical system is more powerful than is needed to focus light on the retina or the eyeball is too long

Does not change shape, but appears to grow and shrink due to the iris expanding and contracting

Photoreceptor that allows us to see colour (3 types: red, green, blue) - high resolution, low sensitivity

Answer