ODP Contact Lens Pre-Final Assessment 1
Latest Update 2025-2026 Actual Exam 100
Questions with 100% Verified Correct Answers
with Guaranteed A+ Verified by Professor
A patient fit with a 44.00D and a power of -2.00 and re-fit with a base curve of 44.50.
What power will now be required? - CORRECT ANSWER: -2.50
A patient with an Rx of +2.50 +0.50 x180 fit .50 flatter than K would need a contact with
a power of: - CORRECT ANSWER: +3.50
A special lens with a soft holder lens and a rigid center used to treat keratoconus is
called: - CORRECT ANSWER: The piggyback
An enlarged thyroid gland can cause: - CORRECT ANSWER: Exophthalmos
An Rx of -3.00 -1.50 x180 and K-readings of 43.50 @180 and 46.50 @90, what would
the residual astigmatism be? - CORRECT ANSWER: +1.50 x 180
As sagittal depth increases: - CORRECT ANSWER: Vaulting increases
At birth, an average child has what visual acuity? - CORRECT ANSWER: 20/800
At what power do you make adjustments for vertex distance? - CORRECT ANSWER: +
or - 4.00
Before 1930 what material was used for contact lenses? - CORRECT ANSWER: Glass
, F.E. Muller provided a lens or "glass shell" to Dr. Theodor Samisch to treat what
condition? - CORRECT ANSWER: Loss of the upper lid
Federal Laws and regulations should be: - CORRECT ANSWER: Familiar to all eyecare
professionals
How can a flat cornea, even down to 31.00 diopters, be measured? - CORRECT
ANSWER: With the use of a -1.00 trial lens
How far is considered optical infinity? - CORRECT ANSWER: 20 feet
How long should a soft lens be allowed to settle on the eye before evaluation the fit? -
CORRECT ANSWER: At lest 20 minutes
How many transitional zones will a quadcurve lens have? - CORRECT ANSWER: 3
How much Corneal Astigmatism does a patient have when they have K readings of
42.25 and 43.75? - CORRECT ANSWER: 1.50 D
How much movement do most lens manufacturers recommend for soft lenses? -
CORRECT ANSWER: -.50 mm to 1.00 mm
How often should the eyepiece of a keratometer be focused? - CORRECT ANSWER:
Daily
If a soft toric lens is too tight: - CORRECT ANSWER: Vision will clear up immediately
after a blink
In the order of operations, What comes before multiplication? - CORRECT ANSWER:
Parenthesis
Latest Update 2025-2026 Actual Exam 100
Questions with 100% Verified Correct Answers
with Guaranteed A+ Verified by Professor
A patient fit with a 44.00D and a power of -2.00 and re-fit with a base curve of 44.50.
What power will now be required? - CORRECT ANSWER: -2.50
A patient with an Rx of +2.50 +0.50 x180 fit .50 flatter than K would need a contact with
a power of: - CORRECT ANSWER: +3.50
A special lens with a soft holder lens and a rigid center used to treat keratoconus is
called: - CORRECT ANSWER: The piggyback
An enlarged thyroid gland can cause: - CORRECT ANSWER: Exophthalmos
An Rx of -3.00 -1.50 x180 and K-readings of 43.50 @180 and 46.50 @90, what would
the residual astigmatism be? - CORRECT ANSWER: +1.50 x 180
As sagittal depth increases: - CORRECT ANSWER: Vaulting increases
At birth, an average child has what visual acuity? - CORRECT ANSWER: 20/800
At what power do you make adjustments for vertex distance? - CORRECT ANSWER: +
or - 4.00
Before 1930 what material was used for contact lenses? - CORRECT ANSWER: Glass
, F.E. Muller provided a lens or "glass shell" to Dr. Theodor Samisch to treat what
condition? - CORRECT ANSWER: Loss of the upper lid
Federal Laws and regulations should be: - CORRECT ANSWER: Familiar to all eyecare
professionals
How can a flat cornea, even down to 31.00 diopters, be measured? - CORRECT
ANSWER: With the use of a -1.00 trial lens
How far is considered optical infinity? - CORRECT ANSWER: 20 feet
How long should a soft lens be allowed to settle on the eye before evaluation the fit? -
CORRECT ANSWER: At lest 20 minutes
How many transitional zones will a quadcurve lens have? - CORRECT ANSWER: 3
How much Corneal Astigmatism does a patient have when they have K readings of
42.25 and 43.75? - CORRECT ANSWER: 1.50 D
How much movement do most lens manufacturers recommend for soft lenses? -
CORRECT ANSWER: -.50 mm to 1.00 mm
How often should the eyepiece of a keratometer be focused? - CORRECT ANSWER:
Daily
If a soft toric lens is too tight: - CORRECT ANSWER: Vision will clear up immediately
after a blink
In the order of operations, What comes before multiplication? - CORRECT ANSWER:
Parenthesis
