Difference between revisions of 20/20 correction
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It is very difficult to perform [[Active Focus]] at this strength of glasses, as there is not enough of a [[blur horizon]] to produce [[stimulus]] - see [[Distance vision]]. | It is very difficult to perform [[Active Focus]] at this strength of glasses, as there is not enough of a [[blur horizon]] to produce [[stimulus]] - see [[Distance vision]]. | ||
'''20/x''' vision is vision that is better than [[20/20]]. It usually involves a small amount of [[hyperopia]]. | |||
==References== | |||
{{reflist}} | |||
[[Category:Articles]] | [[Category:Articles]] | ||