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One technique to evaluate the fit of a soft lens is
An optimal lens fit is:
_______________________ have a life span greater than 6 months and are usually replaced at intervals of no more than one year
These lenses are discarded after every use:
Low water content lenses __________________________
Disposable lenses implies that a lens can be:
___________________ lenses can be worn for a maximum of 7 days or 6 nights
_________________ is the primary material used in many soft contact lenses
Hydrogel material is classified as being:
Hydrogel lenses are classified by the following two characteristics
These lenses require routine disinfection:
One important ocular criterion to choose a type of soft lens for a patient is:
The most important technique to be learned by the patient is:
The base curve of a lens is traditionally based upon:
Lens removal technique for soft lenses is
Hydrophilic lens base curves range from
The majority of soft lens fits will be successful using this base curve range:
Soft lens power is based upon
Spherical equivalent can be calculated as:
Which of these is a method of diagnostic lens fit
In the ______________ method, a different lens design is placed on each eye and compared
Hydrophilic lens diameters range from:
_____________ defines the position of the hydrogel lens in relation to the corneal diameter
Primary gaze movement is measured ____________________________
What is the most reliable test for determining the adequacy of the hydrogel lens fit
The overall soft lens fit can be considered as acceptable, if there is
When is the spherocylindrical over-refraction performed
Insertion and removal training is necessary
First-time soft contact lens wearers should
During the initial after care visit, the patient should:
In which original FDA classification group would you find low-water, non-ionic lenses
What is the material added so that a contact lens better mimics the body’s natural biological process
Why would manufacturer add PVP to the matrix of a soft contact lens
Will a patient ever wear two different brands of soft contact lenses
A patients spectacle Rx is – 5.00 d.s. ou. What is correct regarding contact lenses for this patient
Your patient asks to purchase some Halloween design contact lenses but does not have a prescription. The correct action is
A soft contact lens label should include which parameter
A prospective patient brings in vials of the lenses currently being worn. Can you refill based on the vials
What is needed during a typical contact lens fitting
Can the pH of a soft contact lens change