Outer Eye
These structures are closed as a reflex when something comes near your eye.
What are eyelids?
This cell allows you to see color.
What is a cone cell?
This type of vision problem means you see things better close up.
What is near-sightedness?
This is the area where the optic nerve crosses, sending left eye information to the right brain and vice versa.
What is the optic chiasm?
This vision problem is more common in males.
What is colorblindness?
What is the sclera?
This is the innermost lining of the eye that has 2 layers: a pigmented layer and a neural layer.
What is the retina?
This vision problem results from the eye being too short, and therefore, the light is focused behind the retina.
What is far-sightedness?
What is aqueous humor?
This is the visual processing area of the brain.
What is the occipital lobe?
This is the colored band of smooth muscle in your eye.
What is the iris?
This structure bends and focuses light on the retina.
What is the lens?
This cell that allows us to see black, white and grey.
What are the rod cells?
This is the amount of time it takes for a minor corneal scratch to heal.
What is 48 hours?
The enzyme in tears that kills bacteria.
What is lysozyme?
These structures help suspend the lens within the eye, while also creating aqueous humor (WOW)!
What are the ciliary bodies?
This vision problem occurs because of the hardening of the lens, which happens normally around the age of 40-45.
What is presbyopia?
This area in the eye has a high concentration of cones, and therefore is important for high visual accuity and detail
What is the fovea centralis?
This is the average number of times a person blinks per minute?
What is between 15 and 20?
This layer covers the pupil and iris and is a window into the inner eye.
What is the cornea?
This jelly-like substance behind the lense prevents the eye from collapsing in on itself.
What is vitreous humor?
This vision problem is caused by an irregularly shaped lens or cornea, resulting in multiple points where the light is focused on the retina, making vision blurry.
What is an astigmatism?
If light is focused on this area, it will disappear from our field of vision because there are no photoreceptors in that area.
What is the optic disc?
This part of the eye is the only tissue in the body that does not recieve its nutrients from blood vessels.
What is the cornea?