This week we finished talking about the Autonomic nervous system or ANS and then went into our special senses. As you may know our special senses includes: taste, smell, sight, and hearing. We focused on learning the eye this week. The eye is an amazing sense, without it we would not be able to see all the wonderful things around us. The eye consist of the eyelashes, pupil, iris, lateral and medial commissure. Let's break this down a little. The eyelashes have glands that coats the lashes to keep the eyelashes from sticking and keeping dirt from coming into the eye. The pupil looks black but it is actually a hole. When your pupils constrict, this allows less light to enter the eye and when your pupils dilate, more light enters. There are three layers to the eye, including: the retina (inner layer), choroid, and the sclera (outer layer).
Cataracts is a problem people tend to have as they get older. Cataracts is caused when the fibers in the eye start to harden and the protein that usually helps to repair the eye has a hard time getting in the eye to do this. This results in a lens that becomes cloudy and hard to see through.
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I was diagnosed with cataracts about 4 years ago. A large majority of my family developed cataracts at a younger age, mid 30's. Vision problems are hereditary in my family. The only option available to me is the lens replacement. They are waiting until I get older so the chances of me having to have the surgery a second will be reduced.
ReplyDeleteBetty