click to
Check Your Order Status Toll Free FAX
 866-616-6059
email us

orders@jemoptical.com

Browse Frames
Frame Finder
New Arrivals
$9.95 Frames
Titanium Frames
Men's Frames
Lady's Frames
Unisex Frames
Metal Frames
Plastic Frames
Stainless Frames
Semi-Rimless
Rimless Frames
Kids Frames
SunWear Styles
BIG MAN Frames

Re-lens your frames
RELENS Frame

Options and Misc Items

Lens Options
Accessories
Learning Center
Online Eye Exam

Gift Certificates


Made In USA
Click here details
All lenses are ground in the USA certain raw products may be imported.
Discounts
and Coupons
Subscribe Today!

money back guarantee best price always

We ship Priority mail
Orders Shipped
Priority Mail
 

 All our lenses are manufacture to ANSI tolerancesANSI Z80.1-2010

This is a summary of the principal optical and geometrical tolerances from ANSI Z80.1-2010, American National Standard for Ophthalmics—Prescription Ophthalmic Lenses. We are proud to state that all of our lenses are manufactured in the USA to these tolerances.

Can your current supplier say the same thing?

General Tolerances for Single Vision and Multifocal Lenses
Measurement Power Range Tolerance
Sphere Power ≥ 0.00 D, ≤ ±6.50 D
> ±6.50 D
±0.13 D
±2%
Cylinder Power ≥ 0.00 D, ≤ 2.00 D
> 2.00 D, ≤ 4.50 D
> 4.50 D
±0.13 D
±0.15 D
±4%
Cylinder Axis > 0.00 D, ≤ 0.25 D
> 0.25 D, ≤ 0.50 D
> 0.50 D, ≤ 0.75 D
> 0.75 D, ≤ 1.50 D
> 1.50 D
±14°
±7°
±5°
±3°
±2°
Add Power ≤ +4.00 D
> +4.00 D
±0.12 D
±0.18 D
Unmounted Prism and PRP ≥ 0.00 D, ≤ ±3.37 D
> ±3.37 D
0.33 Δ
1.0 mm
Vertical Prism Imbalance ≥ 0.00 D, ≤ ±3.37 D
> ±3.37 D
±0.33 Δ Total
±1.0 mm Difference
Horizontal Prism Imbalance ≥ 0.00 D, ≤ ±2.75 D
> ±2.75 D
±0.67 Δ Total
±2.5 mm Total
Vertical Segment Height   ±1.0 mm Each
Vertical Segment Difference   1.0 mm Difference
Horizontal Segment Location   ±2.5 mm Total
Horizontal Segment Tilt   ±2.0°
General Tolerances for Progressive Addition Lenses
Measurement Power Range Tolerance
Sphere Power ≥ 0.00 D, ≤ ± 8.00 D
> ± 8.00 D
±0.16 D
±2%
Cylinder Power ≥ 0.00 D, ≤ 2.00 D
> 2.00 D, ≤ 3.50 D
> 3.50 D
±0.16 D
±0.18 D
±5%
Cylinder Axis > 0.00 D, ≤ 0.25 D
> 0.25 D, ≤ 0.50 D
> 0.50 D, ≤ 0.75 D
> 0.75 D, ≤ 1.50 D
> 1.50 D
±14°
±7°
±5°
±3°
±2°
Add Power ≤ 4.00 D
> 4.00 D
±0.12 D
±0.18 D
Unmounted Prism and PRP ≥ 0.00 D, ≤ ±3.37 D
> ±3.37 D
0.33 Δ
1.0 mm
Vertical Prism Imbalance ≥ 0.00 D, ≤ ±3.37 D
> ±3.37 D
±0.33 Δ Total
1.0 mm Difference
Horizontal Prism Imbalance ≥ 0.00 D, ≤ ±3.37 D
> ±3.37 D
±0.67 Δ Total
±1.0 mm Each
Vertical Fitting Point Height   ±1.0 mm Each
Vertical Fitting Point Difference   1.0 mm Difference
Horizontal Fitting Point Location   ±1.0 mm Each
Horizontal Axis Tilt   ±2.0°
Additional Mechanical Tolerances
Measurement Comment Tolerance
Center Thickness When Specified ±0.3 mm
Base Curve When Specified ±0.75 D
Segment Size For Multifocals ±0.5 mm
Warpage   1.00 D
 
Pay Pal Verified Payments Accepted 100 %m guarrenteed We use secure transaction processing by TransFirst
Copyright 2002-2014 JEMoptical Inc. all rights reserved.
Use of this site constitutes acceptance of our User Terms and Privacy Policy
STOP Overpaying for eyeglasses. Save 50-75% on your Eyeglasses when you order online. JEMoptical.com is an industry leader in providing affordable eyeglasses online.
We have been providing eyeglasses to our patients since 1988. 100% satisfaction is always guaranteed.