VA is visual acuity which is a fancy way of saying eyesight. Do you wear glasses?
I'm supposed to but don't wear them very often. I didn't know it had a technical name.
Yeah so VA is dependent on optical and neural factors. You should wear your glasses!
I know I should. So it's basically a team working together for people to be able to see?
Yeah basically! When they don't work well it's called ametropia, which is refractive error. That is how the light is refracted in the eyeball.
Oh ok, that's interesting! What else do you know about eyesight?
the shape of the eyeball or the cornea, and reduced flexibility of the lens. Too high or too low refractive error (in relation to the length of the eyeball) is the cause of nearsightedness (myopia) or farsightedness (hyperopia) (normal refractive status is referred to as emmetropia). Other optical causes are astigmatism or more complex corneal irregularities. These anomalies can mostly be corrected by optical means (such as eyeglasses, contact lenses, laser surgery, etc.).
Neural factors that limit acuity are located
on the issue of Zunera Ishaq wishing to wear a niqab at her citizenship ceremony. Miller said, "if you don't like that or don't want to do that, stay the hell where you came from, is the way, and I think most Canadians feel the same... I'm so sick and tired of, of people wanting to come here because they know it's a good country and then they want to change things before they even really officially become a Canadian, so , I have no sympathy for