Silhouette and trivex lenses - question about optics vs. normal lenses

I just picked up some Silhouette rimless glasses with trivex lenses and
I am having a hard time adjusting to the optics. I thought the drill
mounts might take some getting used to but it's been the poor optics
that have confounded me. My question is, should I be able to notice a
difference between regular plastic lenes and the trivex lenses in a
drill mount? The lens shape isn't all that much different (although it
is slightly wider and slightly less "tall"). My vision with the regular
lenses (in normal frames) was very good.

My script is: -3.25 + 1.25 x 10
-3.00 + 1.00 x 178

It almost seems like they are making me "cross-eyed" but I also notice
the bending of lines (upward when looking down through the bottoms) and
the floor seems much closer to me...sort of magnified. I'm going back
to the Dr. but thought I would give these a week or so, so I could try
to observe what might be off.

Thanks for any help.

 

Trivex lenses have very good optics compared to other mid or high index
lenses and your Rx is not that strong to begin with (which can exacerbate
optical problems with some lenses). So I do not think it is the lens
material that is the problem. The lenses may not be placed correctly in your
frame for where your frame sits on your face, or the Rx could be off, or the
lens could be made incorrectly.

It would also help to compare your old and new Rx to see what the difference
is.

 

I actually have the same rx in the normal (sola?) lens so I can do a
pretty good A/B comparison. It's very odd when I do that and it appears
from the replies so far I shouldn't expect to see that kind of response
just because of trivex.

 

Sola is a manufacturer that uses many different lens materials, just like
Hoya, Younger, Essilor, Rodenstock, etc. I assume your old lenses are
regular plastic 1.50 (aka CR-39 or hard resin).

If the Rx is the same, then you should not see that much difference in a
single vision lens.

 

So the solution is to have a 3rd party do careful lensometry on both
pair, including marking the optical centers and comparing the distances
between them (p.d.s). Post the results here. They might also want to
check the base curves. Oh and one other thought re base curves, do you
know if you got aspheric or spheric Trivex? The come both ways. If they
gave you aspheric, that could be the problem, or it could be the solution.

w.stacy, o.d.

 

Thanks for all the input. My doc checked them and they found that the
PDs were indeed incorrect. They've been sent back to the lab, etc. so
hopefully they'll get it right this time. It was nice to know I wasn't
just being a pain in the rear. I'm looking forward to getting these
back as they truly are remarkable frames - very comfortable.