NOCE Contact Lens Fitting and Dispensing 3

Question 1

When fitting a patient for monovision contact lenses, which eye is conventionally corrected for distance vision?

Accepted Answer

The dominant eye

Answer

In monovision fitting, the dominant eye is corrected for distance vision because it is the eye relied upon for critical distance tasks such as driving.

Question 2

Which multifocal contact lens design features alternating concentric rings of distance and near powers?

Accepted Answer

Concentric (annular) simultaneous vision design

Answer

Concentric (annular) simultaneous vision designs have distinct rings of distance and near power arranged concentrically, requiring the visual system to selectively use the appropriate zone.

Question 3

What is the recommended replacement schedule for daily disposable contact lenses?

Accepted Answer

Discard after each single use

Answer

Daily disposable lenses are designed to be worn once and discarded at the end of the day, providing a fresh sterile lens with each use and minimizing deposit accumulation.

Question 4

Which contact lens care concern has been associated with certain multipurpose solutions and silicone hydrogel lens materials?

Accepted Answer

Decreased surface wettability due to preservative interaction

Answer

Certain preservatives (such as PHMB) in some multipurpose solutions can interact with silicone hydrogel lens surfaces, leading to decreased wettability and increased discomfort.

Question 5

When instructing a new contact lens wearer on lens insertion, what is the correct sequence of steps?

Accepted Answer

Wash hands, verify lens orientation, then insert lens

Answer

Proper hand washing must occur before any lens handling to minimize infection risk, followed by verifying lens orientation to ensure correct power placement before insertion.

NOCE - National Opticianry Competency Examination Practice Test

NOCE - National Opticianry Competency Examination Practice Test

NOCE Contact Lens Fitting and Dispensing 3