Visual system

What have studies of visual object agnosia and prosopagnosia contributed to our understanding of visual recognition? A lot of what we understand about visual recognition comes from investigating cases where the processes involved go wrong. The absence of a cognitive ability can provide is with the ability to look at where things differ in these individuals from those with normal levels of processing. In the case of visual recognition, we can look at different forms of visual agnosias in order…

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,…

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…

Design an experiment to test the following two questions: 1) Do infants detect the difference between 2 visual patterns by 2 months of age? 2) Is the ability to detect the difference between 2 visual patterns innate? Answer the following: a) For the first question, the participants will all be infants that are 2 months of age, give or take a few days. For the second question, the participants will be infants that are 1.5 months of age, give or take a few days. This age is around the time…

Our eyes work like a camera. Just like a camera lens focuses our cornea focuses light on the membrane called the retina. The cornea is transparent. It's found in the front of the eye and it helps focus light. Behind the pupil is a colorless, see threw structure called the crystalline lens. A clear fluid called the aqueous humor fills between the cornea and iris. The cornea focuses most of the light and then it goes through the lens. Behind the cornea is a colored, ring shaped membrane called…

The article “Dismembered human feet keep washing up on beaches in western Canada” started off with a video clip. In the video, a woman was stated her concern on the statement that was made about the foot that had washed ashore, the statement of “there is nothing to see here”. Continuing the conversation, the men stated that this foot was the 14th foot that had been washed ashore around the beach of the Salish Sea in the last century; and one of the only connections between all 14 of the foots is…

lupus. The purpose of this paper is to draw attention to the side effects that can damage the visual system. Even though the side effects cover a broad range, the results on the illness that Plaquenil is prescribed for outweigh the side effects. The side effects will impact individuals in different ways, depending on the dosage and the length of time that the medicine is prescribed. Effects on the visual system include reactions on the cornea, the retina, and the macula. Effects could also…

How Does Ocular Dominance Affect the Way We See Things? Eyes are what allow our brains to process information, whether it’s to see color or to give the ability to read. They are organs that even allow us to evaluate our health, and can be used to express emotion. Everyone has them and each one is different, but they share a common purpose, and it’s important to know how they work. Light passes through the cornea of the eye, which has the job of protecting the eye and refracting the light so…

movie’s greatness. “The art of visual effects is the art of what you get away with, which means you really have to study a lot about how we perceive the world in order to find out how we can trick our perceptions to make something look real when it isn’t (NOVA).” Visual perception is extremely…

As I take you through the path of light I will be explaining what each structure is responsible for and how it handles light. As I get to the path light takes as it enters our eyes I will point out four mechanisms that have to function in order for us to see. Each of our eyeballs have six muscles that attach them to our skull. Four of these muscles pull straight and are called rectus muscles. Two of these muscles pull on an angle and are called oblique muscles. The first mechanism is the…