Visual perception

of ‘othering’ through the element, vision, and its related elements, light and darkness. According to Dr. Stephen E. Palmer’s textbook Vision Science: Photons to Phenomenology, “vision relies on three basic elements, adaptation, sensitivity, and perception”(5). Eyes adapt to various levels of light in order to sense and perceive any figures within the environment. As light decreases, the eyes adapt up to a point until the range of sensitivity drops to a level that eyes can no longer perceive the…

The Science behind the Brain and Its Impact on the Mind The brain is the most complex organ in the entire human body. It is responsible for the regulation of motor function, the body’s capacity to balance, and the ability to translate information sent by sensory organs. The mind is described as the faculty of consciousness and thought, where our feelings and emotions originate from. It can be implied that the science behind the brain may overshadow some facets of the mind, such as free will and…

How does your eye work You see using the your eye. Light is focused onto the layer of cells of the back of your eye known as the retina, light receptors on retina then receive and transmit that information to the brain. The brain, conveys and translate all that into an image. When you look at something... - The image must be reduced in size so that it can fit on the retina The scattered light must come together and must be focused onto retina to form a image Since the surface of the retina is…

Introduction Developmental prosopagnosia is a condition, which a child has difficulty in recognizing faces due to a failure to develop necessary neural mechanisms for processing faces. Some children even fail to recognize faces of family and friends, and unable to recognize their own face in the mirror. This causes a lot of stress on a child in school and in social situations. It can also be dangerous if a child is separated from their caregiver if they are unable to relocate them, or may…

right-nearsighted and left-farsighted eye since birth. The doctor explained to my parents that my brain systematically ignored all images from the right eye which led to the corresponding brain area underdeveloped. His prognosis had a slight chance of visual restoration if I were to exercise my right eye persistently and adamantly to retain brain-eye connection. Not only that, underdeveloped brain eventually would negatively affect all areas of academics. Because I saw everything perfectly…

Assignment 228 . What is the refractive error? Normally, the rays of light entering the eye are brought to a precise focus on the retina, the light sensitive layer lining the back of the eye. When such a focus is not achieved, a refractive error results and vision is not clear. These defects in the focusing power of the eye are called refractive errors, most common symptoms of refractive error is blurry vision. Ophthalmologist can serve the patient by asking questions and obtain information,…

1.1 anatomy of the cornea 1.1.1 Anatomy of the Cornea The cornea is important visual part of the eye, it’s a thin dome-shaped oval from the front and circular from behind and covers the front part of the eye which include iris, pupil and anterior chamber. It forms anterior 1\6 of the outer coat of the globe.[1] The sclera and the conjunctiva overlap the cornea more vertically than horizontally. Together with the lens, the cornea refract light, and it is approximately 43 diopters of the total…

the brain to receive input from ganglion cells is the lateral geniculate nucleus of the thalamus. From there the thalamus sends information to the primary visual cortex in the occipital lobe and area V1 sends information back to the thalamus. These two areas feed information back and forth. Area V1 also sends information to the secondary visual cortex (V1) which then relays that information to different areas of the brain. The ventral stream runs along the occipital cortex to the temporal…

Sometimes only a part of the retina is detached that is called retinal tears that may lead to complete detachment. The retina is an important neurosensory tissue that lines at the two third posterior wall of the eye internally. It maintains equilibrium of visual components with the help of other structural and cellular structures including the central retina (macula) and centermost macula (fovea). The physiological, as well as anatomical procedures inside the attachment, are prevailed out it…

Introduction Central retinal vein occlusion (CRVO) is a blockage in the main blood vessel that carries blood away from the retina (central retinal vein). The retina is the part of your eye that senses light and that sends signals to the brain that allow you to see. CRVO can cause you to have blurry vision. It can also make you lose some or all of your vision. The condition usually affects only one eye. What are the causes? This condition is usually caused by a blood clot that forms inside the…