The letters MSU stand for

• Minimum size uncut

• 
  Minimum surface underneath

• Maximum size uncut

• Multiple sizes uncut

Which of the following factors does not affect the thickness of a lens

• The lens power

• 
  The refractive index

• The final adjustment on the frame

• The lens diameter

Generally, lens thickness is measured in

• Degrees

• Dioptres

• Centimetres

• 
  Millimetres

Bifocal lens designs include

• D-seg, curved-top and executive

• D-seg, Flat-top and degressive

• D-seg, E-line and enhanced reader

• Flat-top, curved-top and hard-top

One advantage of progressive lenses is

• wide view for intermediate use

• excellent peripheral vision

• a complete range of working distances

• changes colour in the sun

Advantages of a supersoft lens design include

• wider areas of vision with 3 distinct focal length

• wider areas of vision with gentle increase on unwanted astigmatism

• longer reading corridor with sharp increase on unwanted astigmatism

• wider areas of vision with sharp increase on unwanted astigmatism

Dispensing measurements required for the fitting of progressive lenses include

• binocular PDs and binocular heights

• monocular PDs and intraocular pressure

• monocular PDs and monocular heights

• monocular PDs and length to bend

Rubbing the contact lens with fingers is

• Recommended to help keep the lens flexible

• Recommended as part of the cleaning process

• Recommended only when the lenses are dry

• Is never recommended and could damage the lenses

If wetting solution is unavailable, saliva

• 
  Can be freely substituted

• 
  Can be used sparingly

• Should never be used

• Saliva is an identical substitute

The first step in lens handling is always

• Wash and thoroughly dry your hair

• Rinse the lenses with saline solution

• Wash and thoroughly dry your hands

• Wash and thoroughly dry the contact lens