The lens is able to change shape allowing the eye to focus at different distances. Microkeratome is a surgical device that is affixed to the eye by use of a vacuum ring. When secured, a very sharp blade shaves a small amount of the cornea at a predetermined depth. Monovision is the purposeful adjustment of one eye for near vision and the other eye for distance vision. Myopia the inability to see distant objects clearly.
Nearsightedness is the common term for myopia.
Ocular histoplasmosis syndrome is a leading cause of vision loss in Americans ages 20 to 40. It affects a small percentage of people who contract the fungal infection. OHS develops when abnormal blood vessels grow underneath the retina. Ophthalmologist is a medical doctor specializing in the diagnosis and medical or surgical treatment of visual disorders and eye disease. Optician is an expert in the art and science of making and fitting glasses and may also dispense contact lenses.