Calculations
Conditions
In House Modification
Solutions
Regulatory
100

Rx of -5.00 +1.00 x 090   Ks 43.50 @180 / 44.25 @90

The power of a GP lens when fit on K

What is -3.75

100

A depressed, thinned out area on the cornea

What is a corneal dellen? 

100

A specific polish that should not be used on GP lenses

What is Silvo?

100

Removes bound proteins

What is enzymatic cleaner?

100

The Rule that requires that providers release a copy of a contact lens prescription at the completion of the fitting 

What is Fairness to Contact Lens Consumer Act (FCLCA) or Contact Lens Rule?

200

Trial lens: 8.6 | 14.0 | +4.00

Over-refraction: +0.75

The new power is

What is +4.75

200

Reshaping or the cornea caused by an improperly fitting contact lens

What is corneal molding?

200

A base curve of 7.94 was ordered. The base curve received was 8.04. 

The lens received is how much flatter or steeper

What is 0.50 flatter? 

200

Digital rub to loosen grunge before disinfection

What is surfactant cleaning?

200

The number of business hours a prescriber has to verify a contact lens prescription before being filled

What is 8 hours?

300

Refraction: -6.00 -1.00 x 170

Trial lens: -5.50 1.00 x 180

Lens rotates 15 degrees counterclockwise

What is 155?

300

Formation of cobblestones under the upper lid

What is GPC?

300

A high plus GP lens will read higher/lower in back vertex

What is higher?

300

Agents that destroy or inhibit growth of pathogenic organisms

What is disinfectant

300

OSHA stands for 

What is Occupational Safety and Health Administration?

400

Ks 43.00@180/42.00@090; Rx: -2.00 +1.00 x 180

Lids position 3 mm above superior limbus

The power is

What is -1.50

400

An inflammatory reaction caused by overnight wear and/or over wearing of contact lenses

What is CLARE?

400

Tolerance for a +10.00 D GP lens

What is 0.25D?

400

Oxidation method of disinfecting soft lenses uses

What is hydrogen peroxide? 

400

The organization that oversees The Contact Lens Rule

What is Federal Trade Commission?

500

GP base curve of 45.00 with a power of -3.00

Over-refraction +0.50

Flatten base curve by 0.50

The BC and power is

What is -2.00 and the base curve is 44.50? 

500

Swelling and fluid retention in the cornea

What is corneal edema
500

GP base curve ordered was 7.50. The lens received was 7.54. 

The lens is in tolerance

What is true

500

GP wetting solutions are used to

What is make surface hydrophilic?

500

True or False: 

Prescribers are considered contact lens fitters

What is true?

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