For most of us, there are five senses: sight, hearing, smell, taste, and touch. Eyesight is generally believed to be the most developed sense in humans as opposed to bats for example, which typically have superior hearing instead (see post script below) ; sight being followed closely by hearing in humans. Eyes (just 2, teachers, do not have a third in back of head) are the organs of vision. They have a complex structure, to put it mildly, consisting of a transparent lens that focuses light on the retina plus a lot of other stuff. The eye is eventually connected to the brain through the optic nerve. The brain then combines the input (all those visual images) of our eyes into a single three-dimensional representation.
There are many problems that may are considered a handicap regarding vision in general. For this reason a good optometrist may be the most reasonable solution, in fact for me at least, a good optometrist is absolutely necessary.
There are many problems that may are considered a handicap regarding vision in general. For this reason a good optometrist may be the most reasonable solution, in fact for me at least, a good optometrist is absolutely necessary.
Color blindness is a common irregularity that occurs in humans that makes it difficult if not impossible for the individual to differentiate colors accurately. Such a condition may not allow the “color blind” individual to distinguish the color red from green for one example. A rather common fallacy regarding this condition is that color blindness can be corrected with contact lenses. This is definitely not the case; however standard eye glasses (the ones with frames) and contact lenses can definitely correct near sightedness or far sightedness; each of which are common types of eyesight deficiencies which many of us experience.
Aside from recognizing where to place the next foot forward, sight is undoubtedly a rather useful sense; those of us with it wonder how we could possibly manage without it. You may for example, want to partake in the most recent works of art displayed by your favorite artisan; or take another look at the eve design of that new house your spouse wants to buy.
Too often, we are all perhaps guilty of neglecting the magnificent sense of sight. We should all therefore make the wise investment of obtaining an annual eye exam from a favorite optometrist before we go blind!
Post Script:
Post Script:
I have always heard that bats had no eyes and therefore were sightless. It turns out that bats are not really blind. This is actually a very common misconception which was pointed out to me just today by Dr. Radford, the optometry specialist; to learn more go to:
Sources …
http://www.misconceptionjunction.com/index.php/2011/02/bats-are-not-blind/ … http://www.scientificpsychic.com/workbook/chapter2.htm ...
http://www.misconceptionjunction.com/index.php/2011/02/bats-are-not-blind/ … http://www.scientificpsychic.com/workbook/chapter2.htm ...
Many eye diseases such as glaucoma have no symptoms until they are far advanced. In glaucoma, the fluid pressure in the eye is often too high, causing damage to the optic nerve, and therefore, to the peripheral vision. However, this pressure is usually not high enough to be noticeable and the peripheral vision loss is only in patches in the beginning. Glaucoma can usually be controlled very well with eye drops but it is important to detect it early enough to make a difference.
ReplyDeleteThis is just one of example of many conditions your eye doctor can detect and treat before you even realize there's a problem.