Eye Knowledge: Fact or Fiction?
- Posted on: Mar 26 2019
Rumor has it that eating carrots are good for your eyes – ever seen a rabbit wearing spectacles?
Ever heard a parent say, “Back up from that TV – it will ruin your eyes”?
Fact or Fiction? Do you know the real truth? Answer the following questions to test your “eye” knowledge.
Carrots good for your eyes. FACT. Carrots have a high level of vitamin A, which is an essential nutrient for good vision. However, there are other sources of vitamin A such as milk, cheese, egg yolks and liver.
Sitting too close to the TV can damage your eyes. FICTION. It may give you a headache, but it will not damage your eyes. If children navigate closer to the TV routinely, you may want to have their eyes tested, as they may be nearsighted.
Only boys are color-blind. FICTION. Boys are more likely to be color-blind than girls, but girls can be color-blind as well. Color blindness does not mean you cannot see any color. Color-blind people have trouble telling the difference between certain colors – usually red and green. There are also other types of color-blindness.
Two parents with brown eyes can have a blue-eyed child. FACT. The most recent genetic research has determined that eye color is controlled by several genes – at least 8. Eye color is influenced by the combination of genes, therefore allowing two brown-eyed parents to have a blue-eyed child. Also, two blue-eyed parents can have a child with green or brown eyes.
Everyone has a blind spot. FACT. “But I have perfect vision, how could this be possible?” Even people with perfect vision have a “blind spot” or a “blank” area in your field of vision. It is normally not noticed because our brains automatically “fill in” the area with what we would “expect” to see there. Some people have larger blind spots than others – often thought to be the result of how our eyes are built.
Wearing spectacles or contact lenses weakens my eyesight. FICTION. Patients think that because spectacle prescriptions need changing periodically, that it is caused by wearing spectacles in the first place. Not true. Corrective lenses change over time due to aging or the presence of a disease.
Eyes can be transplanted. FICTION. Corneas can be, and are, transplanted every day. However, an eye cannot be transplanted. More than 1 million nerve fibers connect each eye to the brain – reconnecting these nerve fibers is a feat that has not been accomplished.
Eyebrows and eyelashes are only for making the human face more attractive. FICTION. While these facial areas are often enhanced to create a more lovely canvas, the eyebrows are to prevent sweat from dripping into your eyes and eyelashes help to keep dirt out of your eyes.
How did you do? Contact us today to schedule an eye exam or to discuss any issues you may be having with your eyes.
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