Deuteranopia Case Study

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1.
a) Define Deuteronopia. b) What causes it? c) Why is it more frequent in males than females? d) Contrast the two types of receptor cells in the retina, and describe the retina’s reaction to light.

Deuteranopia is when someone is colorblind, which results from the exposure to green light, causing the person to be confused, mixing up the colors as green, red, and yellow. Color blindness is caused by the green sensitive cones. In addition, deuteranopia is caused by a genetic condition where it is passed down from your parents and you are born with that effect. It is more frequent in males than females because the gene which causes this condition to be passed down is carried on the X chromosome, where the females are normally the carrier
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The pupil is a small opening of the eye where the light passes through. The iris controls the size of the pupil and is the muscle, which changes in response to the amount of light intensity, where it also responds to our cognitive and emotional behavior. The lens, which is behind the pupil, changes the shape to focus the light rays on the retina. The retina is the inner surface of the eye, where the receptor cells change the light energy into neural impulses where the impulses travel to the brain for a response. In the process of accommodation the lens focuses on the rays by transforming the size and shape to bring close or distant objects into focus on the retina. Even though the retina receives an upside down image, the impulses that the brain receives allows the brain to develop an upright image. However, the types of receptor cells in the retina are the rods and the cones. The rods control vision at low light levels where they do not see color vision, having a low acuity and the cones are active at higher light levels where they are capable of color vision and have a high acuity. Also, the fovea is the central point of focus and is surrounded by cones, where the cones work better in bright light and the rod works better in dim …show more content…
It studies the relationship between the physical stimulation and the psychological effects, where the sensory receptors find the information that is seen and the nervous system then processes the information to the brain of the individual. However, perception is where the brain develops the information in a person’s mind by interpreting recognizing, and thinking about the sensations that they physically feel in order to determine the emotion, feeling, and appearance of the individual. Thus, sensation and perception combine together and works as one continuous process in an individual 's life. Furthermore, bottom up processing begins relying on the sensory receptors, which receives the information of the object by slowly working into small parts, and then working up to the higher levels for processing the recognition of the object, with the information and knowledge that the person gains. This process allows our sensory system to find the information. The top down processing builds up the perception of the individual from the sensory information by reflecting on the experiences and expectations of the person. For this we think about certain things based on what our senses

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