Standards for Opthalmic Lenses

what is the FDA in charge of

requiring impact resistance for spectacle lenses

what must happen to glass lenses in order for them to meet the impact resistant standard

they must be tempered by thermal or chemical tempering

what is the difference between thermal and chemical tempering

chemical has a better result, but it takes longer

how is impact resistance tested

drop ball test

what is the difference in the drop ball test between dress eyewear and safety eyewear

the ball for safety eyewear is bigger the height of the drop stays the same

are there minimum thickness requirements for dress eyewear?

no

are there minimum thickness requirements for safety eyewear

yes

what does the FTC do

regulates commerce to prevent unfair business practices

what does the FTC require

-each patient must be given a copy of their spectacle prescription immediately at the end of the exam so they fill it wherever they desire

-patient signature indicating that they received the prescription

does the patient still get a copy over their prescription even if they haven’t paid for the exam

yes. having insurance is proof of payment

are doctors allowed to use the disclaimer: “not responsible for accuracy of ophthalmic materials obtained from other dispensers”

no because it sounds like customers must buy their glasses from them

what does OSHA do

requires use of ANSI approved safety eyewear in industrial and hazardous work environments

whose responsibility is it to comply to OSHA guidlines

the employer

what is ANSI

-a nonproft organization that assigns committees for standards

-not a regulatory body

-can’t make rules we’re required to follow but can put out recommendations

what are the lens tolerance trends for sphere power with ANSI

tolerance increases as you go above 6.50 sphere (you can have more room for error)

what are lens tolerance trends for cylinder with ANSI

the higher the cyl, the less tolerance (less room for error)

when do doctors specify the center thickness even though there’s no standard for minimum center thickness

when patients have aniseikonia (patients see different image sizes)

all safety glasses, goggles, and face shield used by employees under OSHA jurisdiction must what

meet the ANSI standard

what is the minimum thickness glasses must be for safety glasses

2 mm

if an optometrist has a finishing lab and tweaked the glasses when they came in from the manufacturer are they under product liability

yes