Optical Dispensing Exam Questions And
Answers
Photochromic - - -
correct answer ✅Lenses that change with UV light from clear to
tinted
Polarised - - -
correct answer ✅Only allows light through in one plane
Bifocal - - -
correct answer ✅Lens with 2 powers for distance & near
correction
Fused Bifocal - - -
correct answer ✅Glass lens with 2 powers for distance & near
correction, segment fused into a depression & worked into main
lens
Solid Bifocal - - -
correct answer ✅Glass lens with 2 powers for distance & near
correction, ground from one piece of glass
Moulded Bifocal - - -
correct answer ✅Lens with 2 powers, moulded from plastic
, Optical Dispensing Exam Questions And
Answers
Trifocal - - -
correct answer ✅Lens with 3 powers to add intermediate
correction for older patients
Progressive - - -
correct answer ✅Lens with gradient of increasing power. Distance
at top, intermediate corridor and near at bottom
UV Tint - - -
correct answer ✅Coating for glass to protect against UV rays, even
thickness across the lens
UV Solid - - -
correct answer ✅Coating for glass to protect against UV rays,
material is coloured before making lens, thickness will vary across
lens
UV Tint - - -
correct answer ✅Coating for plastic to protect against UV rays,
usually dipped in tint bath and absorbed into material
Answers
Photochromic - - -
correct answer ✅Lenses that change with UV light from clear to
tinted
Polarised - - -
correct answer ✅Only allows light through in one plane
Bifocal - - -
correct answer ✅Lens with 2 powers for distance & near
correction
Fused Bifocal - - -
correct answer ✅Glass lens with 2 powers for distance & near
correction, segment fused into a depression & worked into main
lens
Solid Bifocal - - -
correct answer ✅Glass lens with 2 powers for distance & near
correction, ground from one piece of glass
Moulded Bifocal - - -
correct answer ✅Lens with 2 powers, moulded from plastic
, Optical Dispensing Exam Questions And
Answers
Trifocal - - -
correct answer ✅Lens with 3 powers to add intermediate
correction for older patients
Progressive - - -
correct answer ✅Lens with gradient of increasing power. Distance
at top, intermediate corridor and near at bottom
UV Tint - - -
correct answer ✅Coating for glass to protect against UV rays, even
thickness across the lens
UV Solid - - -
correct answer ✅Coating for glass to protect against UV rays,
material is coloured before making lens, thickness will vary across
lens
UV Tint - - -
correct answer ✅Coating for plastic to protect against UV rays,
usually dipped in tint bath and absorbed into material
