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sight
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THE B
EST SENSE…
SIGHT
BY
KA
I TL I N
KI T
CH
EN
S
WHAT IS SIGHT?
• Sight is the power of seeing.
• Sight enables us to intake the beauty around us.
• It allows us to observe or catch an initial glimpse of something.
• Sight is the most important sense because it gives the rest of the senses aid to their tasks as well.
• Sight gives us 80% of our stored information.
• The eye is a unique sense with lots of content to make up it. The eye includes three layers: the sclera, cornea, and conjunctiva. The sclera is the white layer that gives the eye its shape. The cornea allows light to pass through, (middle layer). The conjunctiva covers the posterior part of the eyelid.
ORGANS INVOLVED/STRUCTURE
• The choroid layer is found in the middle of the eye. It absorbs light and it makes reflection not occur. The iris, (the colored part of the eye), responds to light by opening an closing. The pupil is found within the center of the iris and it inhibits under light.
ORGANS INVOLVED/STRUCTURE
• The retina is the most inner layer of the eye. It consists of rods and cones, (receptors). The retina is sensitive to light but it is also the place that receives the image. Rods are associated with black and white, while cones are associated with all other colors.
ORGANS INVOLVED/STRUCTURE
DISEASES/DISORDERS • Astigmatism is caused by the
curvature of the eye that is not all the way round. No one is quite sure of the cause, but it is treated by corrective lenses or surgery. Blurred vision and distorted vision are caused by this disease.
• Color Blindness is when the eye cannot comprehend the normal colors others view. It is generally inherited by genes and can be diagnosed through a simple test at the doctor’s office.
• Glaucoma is when damage is found in the optic nerve. It is caused by extreme pressure to the eye. It results in a loss of vision. Treatment may include eye drops or surgery.
SIGHT
• Sight is clearly the best sense because it really is the most important. Sight connects to all the other senses and without sight, the other senses would struggle. We wouldn’t be able to intake everything around us, from people to scenery, 80% of our brains consist of things we used from sight.
