compensated rx's

[optilady1]

I'm on my 6th or 7th compensated rx. They range from 1.60 clear to wrap maui suns.

I CAN'T SEE OUT OF ANY OF THEM.

I haven't done VA's on myself yet, and I'm probably seeing 20/20 ou while looking out of a very select portion of the lenses on each pair, but all in all I'm not impressed.

All were processed using POW measurements. Maybe my brain just likes a good old fashioned cr-39 lens. Not sure. My clearest lenses were plain old simple stock cr-39's with a decent a/r, clear or polarized.

Anyone else experiencing the same thing?

[Uncle Fester]

And the rx is?

[jpways]

And what compensated rx did they tell you they used?

[Barry Santini]

Potential suspects:

1. Original Rx lacks optimal astigmatism correction
2. Undiagnosed esophoria
3. Undiagnosed exophoria
2. Undiagnosed eye tracking/synching issues. Q: Are you bothered by 3D movies?


Flipper any pair and see if acuity improves.

B

[optilady1]

-3.00
-3.75+.75x85

rxs usually come in a smudge weak. Like, a -3.62+.60-ish.

[Barry Santini]

-3.00
-3.75+.75x85

rxs usually come in a smudge weak. Like, a -3.62+.60-ish.

not good. try -0.25 over them and see what you find.

B

[Uncle Fester]

Isn't this the power most of the conventional designs are using when designing the molds?

Darryl?

[jpways]

To me the sphere seems reasonable I would actually try +0.25 Cylinder

[optilady1]

I think I'm just a minus *****. I would wear -4 in my right if I could. It's probably the problem.

[optilady1]

Really? wh*re gets blocked?

[becc971]

add a little plus in front of your new glasses and see how it feels, i have a compensated lens in both of my suns and it took some pretty serious wear time to get used to them. as a fellow minus sl*t i can identify, my left eye will just eat it up!!

[Wes]

Is the PD wide enough? Is there any Base in prism? (There should be.)

[Paul Smith LDO]

Could it just be that your total power at 180 is -4.50, this might be the culprit here. Base curves can be problematic in that power range along with your material choose and how much decentration is there.

[Robert Martellaro]

My clearest lenses were plain old simple stock cr-39's

Reduce the panto and wrap tilt to zero. Still happy?

I think I'm just a minus *****. I would wear -4 in my right if I could. It's probably the problem.

There you go. Get a second opinion on the refraction, preferably from an Optometrist.

[HarryChiling]

I haven't done VA's on myself yet, and I'm probably seeing 20/20 ou while looking out of a very select portion of the lenses on each pair, but all in all I'm not impressed.

-3.00
-3.75+.75x85

rxs usually come in a smudge weak. Like, a -3.62+.60-ish.

I compensate all of my own lenses and ask the lab to stay out of my calcs. I am curious what the base curves are and what material. Some higher index materials exacerbate the effects of off axis peripheral aberrations due to base curves being non-optimal. If the design compensates for this (yes even a single vision lens has design parameters) then you can overcome some of these issues. Often times I find that due to closer vertex distances I can get away with a larger range of Rx's in wrap eyewear, but optimally I try to reduce compromise with the base curve a bit, instead of 8 base lenses I would recommend as low as a 6 base or 7 base with an 8 base bevel this way you are threading the needle between cosmetics and visual comfort.

[Barry Santini]

I compensate all of my own lenses and ask the lab to stay out of my calcs. I am curious what the base curves are and what material. Some higher index materials exacerbate the effects of off axis peripheral aberrations due to base curves being non-optimal. If the design compensates for this (yes even a single vision lens has design parameters) then you can overcome some of these issues. Often times I find that due to closer vertex distances I can get away with a larger range of Rx's in wrap eyewear, but optimally I try to reduce compromise with the base curve a bit, instead of 8 base lenses I would recommend as low as a 6 base or 7 base with an 8 base bevel this way you are threading the needle between cosmetics and visual comfort.

Yes! This is what I do. Put a -6.75 in an Oakley 10 (Progressive), 1.67, on a 6.75 base, and "tilted" the lens bevel apex to reduce the effective wrap from Oakley's 27 degrees to 19 degrees.

Worked out GREAT!

B