mark (03/09/83)
#R:ihuxt:-16800:zinfandel:16900001:000:1313
zinfandel!mark Mar 7 16:36:00 1983
Yes toric lenses are for astigmatism ("technical term?" is "spherical lense"
a technical term?); I tried toric lenses to correct astigmatism
but gave it up for 3 reasons:
1. As a long-term hard lens wearer I found that I just wasn't
satisfied with the vision I got from soft lenses;
it wasn't that 'crystal-clear' sight you get with hard lenses.
Seems that the people happiest with soft lenses are those
that weren't previously contented hard lens wearers.
2. The lenses are weighted so that they maintain the proper
orientation. Unfortunately what happens is that when
they move from the proper location you get a moment of
very fuzzy vision, and then they move back and your sight
clears. So what causes them to move off in the first place?
Eye motion and blinking, largely. What this means in practice
is that in some activity where rapid, accurate vision is important,
(eg, racquetball), then you're likely to be looking around
rapidly and your lenses shift a lot (read: my lenses shifted a lot).
As a result, you get foggy vision just when you want sharp vision
the most.
3. If you have bad astigmatism (I do) then you can feel the differing
thickness at different places in the lenses sometimes.
Mark Wittenberg
...!decvax!sytek!zehntel