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OP When macular degeneration impairs macroscopic vision,
*magniscopic* vision may help. The ability of lenses to magnify is a function of their focal length, which is measured in diopters:
diopter
n.
5Fr dioptre < L dioptra < Gr instrument for leveling, etc. < dia3, through + base of opsis, sight < ops, EYE6 a unit of measure of the power of a lens, equal to the power of a lens with a focal length of one meter
di[op4tral
adj.
If I remember correctly, a four diopter lens has a focal
length of a quarter of a meter.(Hey, Bean, am I right?_)
So I have a six inch four diopter lens to help me read my
monitor.
Entire Thread Subject Posted By Posted macroscopic wwh 06/11/03 12:55 PM Re: macroscopic Bean 06/11/03 03:00 PM Re: macroscopic wwh 06/11/03 03:52 PM Re: macroscopic Zed 06/13/03 12:12 AM Re: macroscopic of troy 06/13/03 03:15 PM
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