I am supose to write a paper, as if I have lost all vision except through the retina, and how I would then perceive images received by the retina. I guess my question is, are there any type of eye diseases where this actually takes place? And how do I learn about them?
Since all vision IS through oiptic nerves connected to the retina, I don't understand the question. The only way vision would be lost is if an image could not even be formed on the retina, such as in a severe case of eye cataracts.
This is why I am having trouble with this assingment. Here it is word for word.
Suppose you have a disease that caused you to lose vision except from the retina. Everything you preceived was preceived by the retina. Discuss how the world might look to you and how you could use your other senses to test your visual perceptions. Be sure to mention your perception of forms, size, distance, and depth as well as your visual organization. Discuss how your hearing, touch and vestubular sense might help you determine wether your visual perceptions were accurat or illusory.
Do you think I am just supose to make something up?
I think you might be confusing retina with fovea. In this case, you would lose most of your peripheral vision, somewhat like looking through a tunnel. Since the fovea contains only cones, you would maintain your color vision, but lose much of your dark adaptation.
I searched Google under the key words "foveal vision" to get these possible sources:
http://en.wikipedia.org/wiki/Fovea
http://www.webexhibits.org/colorart/ag.html
http://www.learning-systems.ch/multimedia/vis_e02.htm
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
If you "lose vision except from the retina," you would have normal vision. However, if the optical nerves are cut, you would find various types of blindness, depending on where the cut occurs.
Recheck your assignment for accuracy. You are also misspelling "perceived."
I hope this helps. Thanks for asking.
To learn about eye diseases where vision is limited to the retina, you can consult various sources such as medical textbooks, academic journals, and reputable websites that specialize in ophthalmology. Here's how you can go about it:
1. Start with textbooks: Look for textbooks related to ophthalmology or eye diseases. These often provide comprehensive information about different eye conditions. Check out the table of contents or index to find sections on diseases that affect the retina or central vision.
2. Academic journals: Research articles published in scientific journals can provide detailed information about specific eye diseases, their symptoms, causes, and treatments. You can access these journals through academic databases like PubMed, JSTOR, or Google Scholar. Use keywords related to central vision or retinal diseases to refine your search.
3. Professional organizations and medical websites: Visit websites of reputable organizations dedicated to ophthalmology or eye care. Examples include the American Academy of Ophthalmology (aao.org), National Eye Institute (nei.nih.gov), or the American Macular Degeneration Foundation (amd.org). These websites often have patient resources that explain different eye diseases, including those affecting the retina.
4. Consult with professionals: If you have access to an ophthalmologist or optometrist, consider reaching out to them for guidance. They can suggest specific resources, recommend relevant research papers, or provide insights based on their expertise.
Remember to critically evaluate the information you find, considering the credibility of the source and cross-referencing with multiple reputable sources to ensure accuracy.
It's important to note that while there are eye diseases that affect vision, such as macular degeneration or retinitis pigmentosa, where central vision may be compromised, complete loss of vision except through the retina itself is highly unlikely. You can use these conditions as a starting point for your paper and consider hypothetical scenarios to explore how your perception would be affected.