Visual acuity basically means the clarity of your vision.  I'm not doing so well with that and had to get glasses recently.  Do you have to wear corrective lenses?
Yes, I've worn glasses since I was five.
My dr told me that a common cause is refractive error or ametropia - basically errors in how the light is refracted in the eyeball.
Interesting. Are those causes something you're born with or can you get them later in life?
Near-sightedness
Near-sightedness, also known as short-sightedness and myopia, is an eye disorder where light focuses in front of, instead of on, the retina. This causes distant objects to be blurry while close objects appear normal. Other symptoms may include headaches and eye strain. Severe near-sightedness is associated with an increased risk of retinal detachment, cataracts, and glaucoma.
The underlying cause is believed to be a combination of genetic and environmental factors. Risk factors include doing work that involves focusing
Visual acuity
Visual acuity (VA) commonly refers to the clarity of vision. Visual acuity is dependent on optical and neural factors, i.e., (i) the sharpness of the retinal focus within the eye, (ii) the health and functioning of the retina, and (iii) the sensitivity of the interpretative faculty of the brain.
A common cause of low visual acuity is refractive error (ametropia), or errors in how the light is refracted in the eyeball. Causes of refractive errors include aberrations in