ABO ADVANCED MOCK EXAM Questions with Correct Answers
(Grade A+)
Question 1: Which of the following is not significant in identifying the problem of vertical imbalance?
Answer: Patient's age
Question 2: Which of the following elements is NOT critical when determining vertical imbalance?
Answer: Lens power in the 180 degree meridian
Question 3: A prism will displace the object being viewed towards its ________.
Answer: Apex
Question 4: A prism will bend light towards its _______.
Answer: Base
Question 5: When dealing with problems of vertical imbalance which is the critical meridian of total
lens?
Answer: 90
Question 6: Which of the following prescriptions would pose the greatest prismatic imbalance at a
reading depth of 10mm?
Answer: OD +2.50 OS -0.25 +2.50 x 090
Question 7: A plus lens moved downward from the primary position will result in:
Answer: Base down prismatic effect
Question 8: What is a hereditary pigmentary degeneration of the retina called which results in gradual
loss of peripheral vision?
Answer: Retinitis pigmentosa
Question 9: What is ocular hypertension?
Answer: Elevation of pressure in the eye above the range considered with an detectable changes in vision or
damage to the structure of the eye. or Eye pressure can be elevated and cause damage in some eyes, but no
damage in others.
Page 1
,Question 10: Which of the following statements is false regarding corneal ulcers? Corneal ulcers can be
________.
Answer: of little concern
Question 11: Approximately what percentage of humans have some alterations in lens transparency
after age 65?
Answer: 60%
Question 12: What type of cataract is a fully developed opacity of the lens with fluid generation and
swelling of the lens volume?
Answer: Hypermature
Question 13: Which of the following statements is false regarding cataracts?
Answer: Cataracts will only form in the nucleus of the lens.
Question 14: ________ is the condition in which both eyes have equal refractive power.
Answer: Insometropia
Question 15: Irregular astigmatism occurs when the principal meridians are not uniform along a major
meridian and not uniform along a meridian. They are found at some place other than 90 degree apart.
Irregular astigmatism is commonly caused by trauma surgery, or corneal dystrophy. TRUE or FALSE
Answer: True
Question 16: In poor light, a person sees red light better than blue, which is why the ocular system
tends to be more myopic, i.e. twilight myopia. TRUE or FALSE
Answer: True
Question 17: _______ are _____ cells that detect motion within a field.
Answer: Rods-Long
Question 18: The crystalline lens is the same size at birth as in an adult, however, it adds cell layers
throughout life, packing them in which makes the crystalline lens harder and is one of the causes of
presbyopia. TRUE or FALSE
Answer: False
Page 2
,Question 19: The triangular structure between the choroid and root of the iris, containing the ciliary
epithelium, stroma, and ciliary muscle is the:
Answer: Ciliary body
Question 20: There are 5 layers of the cornea. They are:
Answer: From most anterior to posterior. Epithelium-Bowman's Layer- Stroma- Descemet membrane-
Endothelium
Question 21: The refractive index of the cornea is:
Answer: 1.376
Question 22: The most powerful refracting medium of the eyes optical system is the cornea. There are
five layers of the cornea, each having a unique purpose and cell structure. One of the requirements of
clear vision is that the cornea ________.
Answer: must remain transparent and must have regular cell structures of all layers.
Question 23: Polarized filters are made by stretching thin sheets of __________ in one meridian.
Answer: Polyvinyl alcohol
Question 24: Visible glare can be dangerous because it can not only wash out colors, but in some
instances, can cause _________.
Answer: Photokeratitis
Question 25: Features and benefits of Trivex include __________.
Answer:
1. Superior optics
2. Impact Resistant
3. Ultra-lightweight
Question 26: What is the index of refraction of Trivex?
Answer: 1.53
Question 27: What is the index refraction of polycarbonate?
Answer: 1.59
Question 28: What company introduced CR-39 lenses?
Answer: PPG industries
Page 3
, Question 29: __________ are generally inorganic materials (metals or minerals) that are vacuum
deposited to add color on glass lenses to give a uniform density of color on the lenses.
Answer: Vacuum color coating
Question 30: Glare is of more concern to which wearer?
Answer: Cataract patients
Question 31: _______ is better than ______ for improving contrast?
Answer: Green-Gray
Question 32: _______ added to any color increases contrast.
Answer: Yellow
Question 33: Although this may be the most popular color for sun lenses, it is not recommended for
patients with emerging cataracts.
Answer: Gray
Question 34: Given a high plus or high minus RX, which lens material would offer the best choice for
uniform density in sun lenses?
Answer: CR-39 & Trivex
Question 35: A Characteristic of a dark tinted glass lens with an RX of +4.00 SPH would be _________.
Answer: Darker in the center and lighter on the edge
Question 36: If a person has exposure to sunlight at least 2 hours or more during the day, __________.
Answer: their ability to adapt to night vision is compromised if they don't protect their eyes from the sun
exposure.
Question 37: Standard transmission is sun lenses should range between _________.
Answer: 15% to 30%
Question 38: The denser the tint in a lens, __________
Answer: the less transmission of light through the lens.
Page 4
(Grade A+)
Question 1: Which of the following is not significant in identifying the problem of vertical imbalance?
Answer: Patient's age
Question 2: Which of the following elements is NOT critical when determining vertical imbalance?
Answer: Lens power in the 180 degree meridian
Question 3: A prism will displace the object being viewed towards its ________.
Answer: Apex
Question 4: A prism will bend light towards its _______.
Answer: Base
Question 5: When dealing with problems of vertical imbalance which is the critical meridian of total
lens?
Answer: 90
Question 6: Which of the following prescriptions would pose the greatest prismatic imbalance at a
reading depth of 10mm?
Answer: OD +2.50 OS -0.25 +2.50 x 090
Question 7: A plus lens moved downward from the primary position will result in:
Answer: Base down prismatic effect
Question 8: What is a hereditary pigmentary degeneration of the retina called which results in gradual
loss of peripheral vision?
Answer: Retinitis pigmentosa
Question 9: What is ocular hypertension?
Answer: Elevation of pressure in the eye above the range considered with an detectable changes in vision or
damage to the structure of the eye. or Eye pressure can be elevated and cause damage in some eyes, but no
damage in others.
Page 1
,Question 10: Which of the following statements is false regarding corneal ulcers? Corneal ulcers can be
________.
Answer: of little concern
Question 11: Approximately what percentage of humans have some alterations in lens transparency
after age 65?
Answer: 60%
Question 12: What type of cataract is a fully developed opacity of the lens with fluid generation and
swelling of the lens volume?
Answer: Hypermature
Question 13: Which of the following statements is false regarding cataracts?
Answer: Cataracts will only form in the nucleus of the lens.
Question 14: ________ is the condition in which both eyes have equal refractive power.
Answer: Insometropia
Question 15: Irregular astigmatism occurs when the principal meridians are not uniform along a major
meridian and not uniform along a meridian. They are found at some place other than 90 degree apart.
Irregular astigmatism is commonly caused by trauma surgery, or corneal dystrophy. TRUE or FALSE
Answer: True
Question 16: In poor light, a person sees red light better than blue, which is why the ocular system
tends to be more myopic, i.e. twilight myopia. TRUE or FALSE
Answer: True
Question 17: _______ are _____ cells that detect motion within a field.
Answer: Rods-Long
Question 18: The crystalline lens is the same size at birth as in an adult, however, it adds cell layers
throughout life, packing them in which makes the crystalline lens harder and is one of the causes of
presbyopia. TRUE or FALSE
Answer: False
Page 2
,Question 19: The triangular structure between the choroid and root of the iris, containing the ciliary
epithelium, stroma, and ciliary muscle is the:
Answer: Ciliary body
Question 20: There are 5 layers of the cornea. They are:
Answer: From most anterior to posterior. Epithelium-Bowman's Layer- Stroma- Descemet membrane-
Endothelium
Question 21: The refractive index of the cornea is:
Answer: 1.376
Question 22: The most powerful refracting medium of the eyes optical system is the cornea. There are
five layers of the cornea, each having a unique purpose and cell structure. One of the requirements of
clear vision is that the cornea ________.
Answer: must remain transparent and must have regular cell structures of all layers.
Question 23: Polarized filters are made by stretching thin sheets of __________ in one meridian.
Answer: Polyvinyl alcohol
Question 24: Visible glare can be dangerous because it can not only wash out colors, but in some
instances, can cause _________.
Answer: Photokeratitis
Question 25: Features and benefits of Trivex include __________.
Answer:
1. Superior optics
2. Impact Resistant
3. Ultra-lightweight
Question 26: What is the index of refraction of Trivex?
Answer: 1.53
Question 27: What is the index refraction of polycarbonate?
Answer: 1.59
Question 28: What company introduced CR-39 lenses?
Answer: PPG industries
Page 3
, Question 29: __________ are generally inorganic materials (metals or minerals) that are vacuum
deposited to add color on glass lenses to give a uniform density of color on the lenses.
Answer: Vacuum color coating
Question 30: Glare is of more concern to which wearer?
Answer: Cataract patients
Question 31: _______ is better than ______ for improving contrast?
Answer: Green-Gray
Question 32: _______ added to any color increases contrast.
Answer: Yellow
Question 33: Although this may be the most popular color for sun lenses, it is not recommended for
patients with emerging cataracts.
Answer: Gray
Question 34: Given a high plus or high minus RX, which lens material would offer the best choice for
uniform density in sun lenses?
Answer: CR-39 & Trivex
Question 35: A Characteristic of a dark tinted glass lens with an RX of +4.00 SPH would be _________.
Answer: Darker in the center and lighter on the edge
Question 36: If a person has exposure to sunlight at least 2 hours or more during the day, __________.
Answer: their ability to adapt to night vision is compromised if they don't protect their eyes from the sun
exposure.
Question 37: Standard transmission is sun lenses should range between _________.
Answer: 15% to 30%
Question 38: The denser the tint in a lens, __________
Answer: the less transmission of light through the lens.
Page 4
