Difference between revisions of Visual acuity
Jump to navigation
Jump to search
m
adding a (possibly slightly gratuitous) linkification
Dlskidmore (talk | contribs) m (more detail on disances, some links I'll need to add redirects for...) |
m (adding a (possibly slightly gratuitous) linkification) |
||
| Line 4: | Line 4: | ||
* 40/20 is excellent. | * 40/20 is excellent. | ||
Visual Acuity for [[myopes]] is typically measured at 20 feet or 6 meters. Lens or mirror tricks may be used to change the effective test distance in a smaller room. Visual Acuity for [[hyperopes]] is typically measured at 36cm, and a [[presbyope]] would be measured at both distances. | Visual Acuity for [[myopes]] is typically measured at [[distance vision|20 feet or 6 meters]]. Lens or mirror tricks may be used to change the effective test distance in a smaller room. Visual Acuity for [[hyperopes]] is typically measured at 36cm, and a [[presbyope]] would be measured at both distances. | ||
[[Refraction]] is only one part of visual acuity. Various medical conditions can cause physical blockage/dispersion of light in the eye, problems detecting light in the eye, or problems with the visual processing that turns a series of electrochemical signals into a picture in our mind's eye. See an [[optometrist]] if your vision can't be corrected with [[refraction]]. | [[Refraction]] is only one part of visual acuity. Various medical conditions can cause physical blockage/dispersion of light in the eye, problems detecting light in the eye, or problems with the visual processing that turns a series of electrochemical signals into a picture in our mind's eye. See an [[optometrist]] if your vision can't be corrected with [[refraction]]. | ||