N.J. Admin. Code § 13:35-5.2

Current through Register Vol. 56, No. 24, December 18, 2024

Section 13:35-5.2 - Minimum standards and tolerances of optical lenses

(a) Every pair of lenses, spectacles, eyeglasses or appurtenances thereto, prepared for or dispensed to the intended wearers from written prescriptions of physicians duly licensed to practice their profession, or duplication, replacements, reproductions or repetitions, must conform to the following minimum standards and tolerances:

PHYSICAL QUALITY AND APPEARANCE

1. Surface imperfections

TOLERANCE: No pits, scratches (other than hairline), grayness or watermarks shall be acceptable.

2. Glass defects

TOLERANCE: No bubbles, striae and inclusions shall be acceptable.

3. Localized power errors

TOLERANCE: Waves found by visual inspection shall be passable if no deterioration in image quality is found when the localized area is examined with a standard lens measuring instrument.

4. Refractive powers

TOLERANCE: 0.0. to 6.00, + or -0.12.

6.25 to 12.00, 2 per cent of power.

Above 12.00, + or -0.25.

Maximum cylinder power variation + or -0.12.

5. Refractive power addition

TOLERANCE: + or -0.12.0.

6. Cylinder Axis

TOLERANCE: 0.12 to 0.37 + or -3 degrees.

0.50 to 1.00, + or -2 degrees.

1.12 on up, + or -1 degree.

7. Prism power and location of specified optical center

TOLERANCE: Vertical + or -0.25 prism for each lens or a total of 0.50 prism imbalance. Horizontal + or -0.25 prism for each lens or a total of 0.50 prism imbalance.

8. Segment size

TOLERANCE: + or -0.5 mm. Pair must be symmetrical upon visual inspection.

9. Segment location

TOLERANCE: As specified within + or -0.5 mm.

10. Lens size:

i. Rimless

TOLERANCE: + or -0.5 mm;

ii. Bevel, for plastic frames

TOLERANCE: + or -0.5 mm;

iii. Bevel, for metal frames

TOLERANCE: To fit standard specified frame. Lens shape must match. Edges must be smooth and straight and sharp edge must be removed.

11. Heat-treated and chemically-treated industrial safety eyewear

TOLERANCE: Tolerance for power, size and the like shall be as above, except that minimum thickness edge or center shall meet the requirements of American Standard Z80.1-1972 and subsequent revisions.

12. Heat-treated and chemically-treated dress eyewear

TOLERANCE: Tolerance for power, size and the like shall be as above, except that minimum thickness edge or center shall meet the requirements of American Standard Z80.1-1972 and subsequent revisions.

(b) Provided, however, that nothing herein shall be construed to prohibit deviations beyond those established by this rule, provided that good medical cause exists therefor.

N.J. Admin. Code § 13:35-5.2