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Science of Seeing
| Question | Answer |
|---|---|
| These are the visual sensory receptors found at the back of the retina, responsible for non-color sensitivity to low levels of light. | Rods |
| These are the visual sensory reseptors found at the back of the retina, responsible for color vision and sharpness of vision. | Cones |
| It bends light waves so the image can be focused on retina, light passes through it. | Cornea |
| It is the clear liquid that nourishes the eye. | Aqueous Humor |
| Its muscles control the size of the pupil and regulates light through the pupil and into the lens. | Iris |
| Iris opening that changes size depending on the amount of light in the environment. | Pupil |
| It changes shape to bring objects into focus. | Lens |
| It contains Photoreceptor cells or the rods/cones. | Retina |
| Central area of retina; greatest density of photoreceptors. | Fovea |
| It sends visual information to the brain. | Optic Nerve |
| Where the optic nerve leaves the eye; There are no rods/cones here; No visual reception in optic nerve. | Blind spot |
| It is the jelly-like liquid that nourishes and gives shape to the eye. | Vitreous humor |
| It refers to clarity and sharpness. | Visual Acuity |
| It is the outer layer, a tough, opaque layer of connective tissue used to protect the inner structures of the eye. It helps maintian the shape of the eyeball. | Sclera |
| Midlayer, pigmented layer. It contains blood vessels. It also absorbs imperfectly focused light rays. | Choroid Coat |
| The central opening of the Iris. | Pupil |
| Responsible for the color of the eye, contraction and expansion of the pupil. | Iris |
| The process where a change in the thickness of the lens occur as the eye focuses on objects that are far away or close. | Visual Accommodation |
| It is in between the two eyes. | Optic Chiasm |
| Special cells that respond to various lightwaves. | Photoreceptors |
| The recovery of the eye's sensitivity to visual stimuli in darkness after exposure to bright lights. | Dark adaptation |
| The recovery of the eye's sensitivity to visual stimuli in light after exposure to darkness. | Light adaptation |
| A special form of far-sightedness which occurs with advancing age; cannot clearly focus on near objects. | Presbyopia |
| It is caused by shortened eyeball, making the distance from the lens to the retina to shorten. It allows you to see far objects clearly but not near ones. | Farsightedness or Hyperopia |
| This causes the image that one sees when looking at a distant object to be out of focus but in focus when looking at a close object. | Myopia or Nearsightedness |
| A structural defect of the eye generall caused by irregularity in the shape of the cornea. | Astigmatism |
| Difficulty in distinguishing colors. | Partial Color blindness |
| It is caused by the defective cones in the retina of the eye. | Color blindness |
| A lack of functioning blue cones | Tritanopia (Blue-yellow Color deficiency) |
| Absence of red/green cones. | Protanopia/Deuteranopia (Red-green) |
| Theory of color vision that proposes visual neurons or groups of neurons are stimulated by light of one color or another. | Opponent-process theory |
| It is determined by the amplitude of the wave. | Brightness |
| It is determined by the length of the wave. | Hue or Color |
| Purity of the color people perceive. | Saturation |
Created by:
heygiuliamae
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