with a study of the lensometer to include a survey of its principal
parts as will as a summary of the measurements it is capable of reading.
Includes a step by step procedure for verifying a lens from a known
prescription as well as neutralizing a lens from an unknown prescription.
The methods of interpreting prism power as well as the direction of
its base are followed by a description of when and how to “split” vertical
prism for improved cosmetics and patient comfort.A
survey and brief description of some basic tools used in the optical
dispensary concludes this section.
governmental and non-governmental regulatory agencies are surveyed to
include ANSI, OSHA, FDA, and ASTM. An bbreviated table of ANSI Standards
is included to list the most commonly referenced tolerances for prescription
ophthalmic lenses along with a table of other ANSI publications of interest
to the optical dispenser. Professional liability for the products, services,
and information dispensed to the public is addressed. Emphasis is placed
on maintaining adequate, up-to-date product knowledge and of demonstrating
genuine concern for the needs and well-being of the patient.