* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Lesson 2.4: Communication with the Outside World Essential
Survey
Document related concepts
Visual impairment wikipedia , lookup
Idiopathic intracranial hypertension wikipedia , lookup
Corrective lens wikipedia , lookup
Keratoconus wikipedia , lookup
Vision therapy wikipedia , lookup
Contact lens wikipedia , lookup
Mitochondrial optic neuropathies wikipedia , lookup
Visual impairment due to intracranial pressure wikipedia , lookup
Diabetic retinopathy wikipedia , lookup
Photoreceptor cell wikipedia , lookup
Cataract surgery wikipedia , lookup
Transcript
Lesson 2.4: Communication with the Outside World Essential Questions- Type complete answers to the below questions in 12 point Times New Roman Font single-spaced. 1. How do humans communicate with the world around them? 2. How does the power of sight allow humans to communicate with the outside world? 3. How is light focused by the eye? 4. How do the eye and the brain work together to process what we see? 5. How does what we see impact other human body systems? 6. What is visual perception? 7. What does it mean to have 20/20 vision? 8. How can corrective lenses be used to refocus light and resolve myopia and hyperopia? 9. How does the eye perceive depth, color and optical illusions? 10. How does an error in the structure or function of the eye relate to disease or dysfunction? 11. How is life impacted by a vision disorder? 12. What are the tests and procedures in a routine eye exam? Key Terms Accommodation Astigmatism Blind spot Cone Cornea Depth Perception Hyperopia Iris Lens Myopia Optic nerve Pupil Refraction Retina Rod The automatic adjustment of the eye for seeing at different distances affected chiefly by changes in the convexity of the crystalline lens. A defect of an optical system (as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image. The small circular area in the retina where the optic nerve enters the eye that is devoid of rods and cones and is insensitive to light. Any of the conical photosensitive receptor cells of the vertebrate retina that function in color vision. The transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior. The ability to judge the distance of objects and the spatial relationship of objects at different distances. A condition in which visual images come to a focus behind the retina of the eye and vision is better for distant than for near objects -- called also farsightedness. The opaque muscular contractile diaphragm that is suspended in the aqueous humor in front of the lens of the eye, is perforated by the pupil and is continuous peripherally with the ciliary body, has a deeply pigmented posterior surface which excludes the entrance of light except through the pupil and a colored anterior surface which determines the color of the eyes. A curved piece of glass or plastic used singly or combined in eyeglasses or an optical instrument (as a microscope) for forming an image by focusing rays of light. A condition in which the visual images come to a focus in front of the retina of the eye because of defects in the refractive media of the eye or of abnormal length of the eyeball resulting especially in defective vision of distant objects -- called also nearsightedness. Either of the pair of sensory nerves that comprise the second pair of cranial nerves, arise from the ventral part of the diencephalon, form an optic chiasma before passing to the eye and spreading over the anterior surface of the retina, and conduct visual stimuli to the brain. The opening in the iris, which admits light into the interior of the vertebrate eye; muscles in the iris regulate its size. The deflection from a straight path undergone by a light ray or a wave of energy in passing obliquely from one medium (as air) into another (as water or glass) in which its velocity is different. The sensory membrane that lines most of the large posterior chamber of the vertebrate eye, is composed of several layers including one containing the rods and cones, and functions as the immediate instrument of vision by receiving the image formed by the lens and converting it into chemical and nervous signals which reach the brain by way of the optic nerve. Any of the long rod-shaped photosensitive receptors in the retina responsive to faint light. Label the below Eye Diagram: Aqueous Humor Blind Spot Cornea Iris Lens Optic Nerve Pupil Retina Sclera Tapetum Vitreous Humor Trace the Pathway of Light through the Eye, Write it out below: Differentiate between Ophthalmologists, Optometrists, and Opticians: