NORTH CAROLINA

STATE BOARD OF OPTICIANS

EYEGLASS PRACTICAL

REFERENCES:

Brooks, C.W. Understanding Lens Surfacing. Butterworth-Heinemann, Boston, 1992.

Brooks, C.W. Essentials for Ophthalmic Lens Work. Butterworth- Heinemann, 1983.
Brooks, C.W., and Borish, I.M. System for Ophthalmic Dispensing. Butterworth-Heinemann, Boston, 1998.
Z-80.1-1995 America, American National Standard for Ophthalmic- Prescription Ophthalmic Lenses - Requirements. New York: American National Standards Institute, 1995.
Optical Laboratories Association, Progressive Identifier. 1997.
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The North Carolina State Board of Opticians EYEGLASS PRACTICAL examination may include but will not be limited to the following topics:

• Finding single-vision and multi-focal lens powers using a Crossed-Line-Target Lensometer;
• reading lenses in both plus cylinder and minus cylinder form;
• determining add power;
• measuring lens center thickness with lens calipers;
• checking for horizontal and vertical prism;
• measuring base curves and seg width;
• measuring distance between centers;
• measuring "distance PD" and "near PD";
• quote and apply ANSI Z-80-1995 standards;
• identify and calculate inset, seg inset, and total inset;
• measure seg height and determine seg drop;
• calculate edger settings;
• identify lenses by both product name and manufacturer;
• progressive addition lenses areas include: monocular decentration, distance reference point, prism reference point, fitting cross, near reference point, manufacturer's hidden identifying logo, hidden reference points, hidden add power engraving, recommended minimum height.

The North Carolina State Board of Opticians EYEGLASS PRACTICAL examination may include but will not be limited to the following equipment and supplies:

lensometer
lens clock
flexible millimeter ruler
thickness gauge
fine-tip, water soluble felt tip marker
Optical Laboratories Association Progressive Identifier
PAL-ID
scratch paper