Contact Lens 1 Midterm Answers
Which of the following facts tells us that the affected person would in all likelihood benefit
from smooth touch lens wear?
-patient is an athlete
-patient is a landscaper
-patient works with pesticides
-affected person is an emmetrope
patient is an athlete
The vehicle-refractor can be used to identify:
-contraindications
-sphere, cylinder, and axis
-visual acuity with glasses
-tear wreck-up time
sphere, cylinder, and axis
The keratometer is used to measure:
-lens power
-spectacle prescription
-pupillary distance
-corneal curvature
corneal curvature
The shorter the radius of curvature:
-the smaller the diameter
-the steeper the base curve
-the thicker the lens
-the flatter the bottom curve
the steeper the bottom curve
A affected person has a spectacle prescription of -three.50 - 0.50 x 180. Which of the
subsequent contact lens powers might you count on to provide the quality visual acuity?
-three.50
-3.Seventy five
-four.00
-four.50
-three.Seventy five
, A affected person has a spectacle prescription of -7.50 - 1.50 x a hundred and eighty. What
is the round equivalent?
-7.50
-eight.00
-eight.25
-9.00
-eight.25
Prolonged intervals of near work even as wearing gentle contact lenses can also lead to
soreness due to:
-reduced blinking
-neovascularization
-student dilation
-incapacity to deal with
decreased blinking
The right becoming dating for gentle contact lenses is called the 3-factor-touch. Which of the
beneath are the mentioned areas a gentle touch lens need to contact?
-center of cornea, and contrary edges on the sclera
-higher lid, decrease lid, and bowman's layer
-limbus, conjunctive, and student
-retina, macula, and iris
middle of cornea, and opposite edges on the sclera
If a contact lens is just too flat, you'll anticipate to peer:
-Little to no motion upon blinking
-three point contact
-immoderate decentration or movement with eye motion
-half of to at least one mm of movement upon blinking
immoderate decentration or movement with eye motion
A patient's spectacle prescription is +nine.00 -1.00 x half, vertex distance = thirteen mm.
What CL strength could you select?
+10.75
+7.50
+8.Seventy five
+nine.50
+9.50
Preservatives are added to touch lens answers to:
-smash microorganisms
-neutralize hydrogen peroxide
-guard the solution from spoilage after opening
Which of the following facts tells us that the affected person would in all likelihood benefit
from smooth touch lens wear?
-patient is an athlete
-patient is a landscaper
-patient works with pesticides
-affected person is an emmetrope
patient is an athlete
The vehicle-refractor can be used to identify:
-contraindications
-sphere, cylinder, and axis
-visual acuity with glasses
-tear wreck-up time
sphere, cylinder, and axis
The keratometer is used to measure:
-lens power
-spectacle prescription
-pupillary distance
-corneal curvature
corneal curvature
The shorter the radius of curvature:
-the smaller the diameter
-the steeper the base curve
-the thicker the lens
-the flatter the bottom curve
the steeper the bottom curve
A affected person has a spectacle prescription of -three.50 - 0.50 x 180. Which of the
subsequent contact lens powers might you count on to provide the quality visual acuity?
-three.50
-3.Seventy five
-four.00
-four.50
-three.Seventy five
, A affected person has a spectacle prescription of -7.50 - 1.50 x a hundred and eighty. What
is the round equivalent?
-7.50
-eight.00
-eight.25
-9.00
-eight.25
Prolonged intervals of near work even as wearing gentle contact lenses can also lead to
soreness due to:
-reduced blinking
-neovascularization
-student dilation
-incapacity to deal with
decreased blinking
The right becoming dating for gentle contact lenses is called the 3-factor-touch. Which of the
beneath are the mentioned areas a gentle touch lens need to contact?
-center of cornea, and contrary edges on the sclera
-higher lid, decrease lid, and bowman's layer
-limbus, conjunctive, and student
-retina, macula, and iris
middle of cornea, and opposite edges on the sclera
If a contact lens is just too flat, you'll anticipate to peer:
-Little to no motion upon blinking
-three point contact
-immoderate decentration or movement with eye motion
-half of to at least one mm of movement upon blinking
immoderate decentration or movement with eye motion
A patient's spectacle prescription is +nine.00 -1.00 x half, vertex distance = thirteen mm.
What CL strength could you select?
+10.75
+7.50
+8.Seventy five
+nine.50
+9.50
Preservatives are added to touch lens answers to:
-smash microorganisms
-neutralize hydrogen peroxide
-guard the solution from spoilage after opening
