Reference no: EM132703860
As you should have noticed, although a person with 6.25 D of myopia has extremely blurred vision across the room, their vision up close (within 16 cm/6.5 inches, in this case) is pretty much normal. So that is the way that a myope sees: blurred distance vision, but good vision up close.
A historical note: before glasses were invented (roughly 500 years ago), people who were myopic were handicapped because of their inability to see distant objects clearly, but they actually had an advantage in seeing close objects. So a myope in these times would likely spend their life doing close work, such as copying manuscripts.What is the treatment for myopia? The combined lens power of the person's visual system needs to be reduced. This can be accomplished by wearing lenses that in effect subtract power from the system; the correct amount of minus lens power places the image back on the retina,and the person sees clearly, both far and near. A reduction in combined lens power can be done with eyeglasses, with contact lenses, or with refractive surgery .The most common refractive surgery procedure is LASIK (laser-assisted in situ keratomileusis). LASIK and other similar surgeries involve flattening of the front curvature of the cornea; flattening the cornea reduces the overall focusing power of the eye.
Click on the link below to visit the Mayo Clinic's website for information about LASIK. Read as much as you like about it, but in particular watch the 40-second video (after "During the Procedure"), and then answer these questions:
a. Why is a flap made on the anterior surface of the cornea to begin the procedure?
b. After the flap is made, what does the laser do to the cornea in LASIK?
https://www.mayoclinic.org/tests-procedures/lasik-eye-surgery/about/pac-20384774