hey everybody, this is Porsha.
I did my reseach project on CATARACT.
Cataract is known as an eye disease that involves the clouding or pacification of the natural eye may cause changes in the way you see or if not detected at an early stage, may lead to losing sight in your eye(s). Generally , cataract develops from clumps of protein reduce the sharpness of the image reaching the retina, when the lens consists mostly of water and protein the protein clumps and it clouds the lens and reduces the light that can reach the retina. From the clouding this may become sever enough to cause blurred vision.
The normal fuction an eye would be to a clear. When having a type of visual acuity, it is tested by reading an eye chart at a distance of 20 feet. If you have 20/20 vision, this means that when you stand 20 feet away from the chart you can see what a normal human being can see. Basically if you have 20/20 vision, your vision is normal or in other words good. However, if you have 20/40 this means that when you stand 20 feet away from the chart you can only see what a normal human can see when standing 40 feet from the chart.
Cataract requires surgical extraction of the opague lens and intrapoperative correction of visual deflects with a lens implant for best visual results. This procedure is usually performed as same day surgery since the operation is short you can come home the same day. However, there are two types of surgical procedures to this: extracapsular and intracapsular surgery.
I enjoyed doing this reasearch and it helped me out alot to learn more about it. My father and grandfather suffered from cataract so this was great study.
REFERENCES: 1. http://www.nei.nih.gov/health/cataract/cataract_facts.asp
2. http://www.docshop.com/education/vision/eye-diseases/cataracts/
STATMENT: Cataract is derived from the Greek word cataracts, which is describes rapidly running water. Keen Greek observes noticed similar-appearing changes in the eye and attributed visual loss from “cataracts” as an accumulation of this turbulent fluid, having no knowledge of the anatomy of the eye or the status or importance of the lens.
