ABO ADVANCED ACTUAL EXAM PAPER Questions with Correct
Answers (Grade A+)
Question 1: Cold autoantibody specificity.
Answer: Anti-I
Question 2: Cold reacting alloantibody specificity.
Answer:
1. Anti-P1
2. -M
3. -N
4. -Lea
5. -Leb
Question 3: When taking seg height measurements, which of the following situations could result in a
parallax error?
Answer: Patient sitting/ dispenser standing erect
Question 4: Which of the following is not significant in identifying the problem of vertical imbalance?
Answer: Patient's age
Question 5: If the forward and back type do not agree, then.
Answer: is must be resolved for patients to be transfused (group O given in emergency)
Question 6: Which of the following elements is NOT critical when determining vertical imbalance?
Answer: Lens power in the 180 degree meridian
Question 7: A prism will displace the object being viewed towards its ________.
Answer: Apex
Question 8: A prism will bend light towards its _______.
Answer: Base
Question 9: Mixed field reaction.
Answer: A3
Page 1
,Question 10: A2 will look like ____ in front type.
Answer: A1
Question 11: Bone Marrow transplant: if type A, transplanted with an O bone marrow, the new cells
will be Type O., this is an example of-.
Answer: dual population
Question 12: Secretor studies use.
Answer: saliva
Question 13: When dealing with problems of vertical imbalance which is the critical meridian of total
lens?
Answer: 90
Question 14: Secretor studies help.
Answer: to detect soluble antigens
Question 15: Causes of Missing/Weak antibodies.
Answer:
1. advanced age
2. immune deficiency
3. bone marrow transplant
4. chemotherapy/radiation therapy
5. or newborn
Question 16: Which of the following prescriptions would pose the greatest prismatic imbalance at a
reading depth of 10mm?
Answer: OD +2.50OS -0.25 +2.50 x 090
Question 17: A plus lens moved downward from the primary position will result in:.
Answer: Base down prismatic effect
Question 18: What is a hereditary pigmentary degeneration of the retina called which results in
gradual loss of peripheral vision?
Answer: Retinitis pigmentosa
Page 2
,Question 19: How does chemotherapy/radiation therapy weaken antibodies?
Answer: Can wipe off plasma cells
Question 20: 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.orEye pressure can be elevated and cause damage in some eyes, but no
damage in others.
Question 21: Which of the following statements is false regarding corneal ulcers? Corneal ulcers can be
________.
Answer: of little concern
Question 22: Approximately what percentage of humans have some alterations in lens transparency
after age 65?
Answer: 60%
Question 23: Resolution steps for missing/weak antibodies.
Answer: Add more serum, incubate longer at room temperature (15-60min), test at colder temp.
Question 24: Resolution steps for missing/weak antibodies: What happens if serum is limited?
Answer: Start with a dry cell button for A1 and B cells
Question 25: What type of cataract is a fully developed opacity of the lens with fluid generation and
swelling of the lens volume?
Answer: Hypermature
Question 26: Causes of Extra antigens.
Answer: acquired B, B subgroup, cold agglutinin
Question 27: Resolution steps for Extra antigens.
Answer: Acidify reagent, another manufacturer monoclonal reagents for Anti-A, Anti-B, or warm wash
patient's cells with saline warmed to 37C at least three times
Question 28: **Cold agglutinin is similar to.
Answer: Cold autoantibody (Anti-I)
Page 3
, Question 29: Which of the following statements is false regarding cataracts?
Answer: Cataracts will only form in the nucleus of the lens.
Question 30: ________ is the condition in which both eyes have equal refractive power.
Answer: Insometropia
Question 31: 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 32: 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 33: Causes of Extra Antibodies.
Answer:
1. subgroups of A: Anti-A1
2. cold alloantibodies
3. cold autoantibody
4. rouleaux
5. transfusion ABO (varied plasma)
Question 34: Which cold alloantibodies can be neutralized?
Answer: Anti-Lea, -Leb, -P1
Question 35: _______ are _____ cells that detect motion within a field.
Answer: Rods-Long
Question 36: 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
Question 37: The triangular structure between the choroid and root of the iris, containing the ciliary
epithelium, stroma, and ciliary muscle is the:.
Answer: Ciliary body
Page 4
Answers (Grade A+)
Question 1: Cold autoantibody specificity.
Answer: Anti-I
Question 2: Cold reacting alloantibody specificity.
Answer:
1. Anti-P1
2. -M
3. -N
4. -Lea
5. -Leb
Question 3: When taking seg height measurements, which of the following situations could result in a
parallax error?
Answer: Patient sitting/ dispenser standing erect
Question 4: Which of the following is not significant in identifying the problem of vertical imbalance?
Answer: Patient's age
Question 5: If the forward and back type do not agree, then.
Answer: is must be resolved for patients to be transfused (group O given in emergency)
Question 6: Which of the following elements is NOT critical when determining vertical imbalance?
Answer: Lens power in the 180 degree meridian
Question 7: A prism will displace the object being viewed towards its ________.
Answer: Apex
Question 8: A prism will bend light towards its _______.
Answer: Base
Question 9: Mixed field reaction.
Answer: A3
Page 1
,Question 10: A2 will look like ____ in front type.
Answer: A1
Question 11: Bone Marrow transplant: if type A, transplanted with an O bone marrow, the new cells
will be Type O., this is an example of-.
Answer: dual population
Question 12: Secretor studies use.
Answer: saliva
Question 13: When dealing with problems of vertical imbalance which is the critical meridian of total
lens?
Answer: 90
Question 14: Secretor studies help.
Answer: to detect soluble antigens
Question 15: Causes of Missing/Weak antibodies.
Answer:
1. advanced age
2. immune deficiency
3. bone marrow transplant
4. chemotherapy/radiation therapy
5. or newborn
Question 16: Which of the following prescriptions would pose the greatest prismatic imbalance at a
reading depth of 10mm?
Answer: OD +2.50OS -0.25 +2.50 x 090
Question 17: A plus lens moved downward from the primary position will result in:.
Answer: Base down prismatic effect
Question 18: What is a hereditary pigmentary degeneration of the retina called which results in
gradual loss of peripheral vision?
Answer: Retinitis pigmentosa
Page 2
,Question 19: How does chemotherapy/radiation therapy weaken antibodies?
Answer: Can wipe off plasma cells
Question 20: 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.orEye pressure can be elevated and cause damage in some eyes, but no
damage in others.
Question 21: Which of the following statements is false regarding corneal ulcers? Corneal ulcers can be
________.
Answer: of little concern
Question 22: Approximately what percentage of humans have some alterations in lens transparency
after age 65?
Answer: 60%
Question 23: Resolution steps for missing/weak antibodies.
Answer: Add more serum, incubate longer at room temperature (15-60min), test at colder temp.
Question 24: Resolution steps for missing/weak antibodies: What happens if serum is limited?
Answer: Start with a dry cell button for A1 and B cells
Question 25: What type of cataract is a fully developed opacity of the lens with fluid generation and
swelling of the lens volume?
Answer: Hypermature
Question 26: Causes of Extra antigens.
Answer: acquired B, B subgroup, cold agglutinin
Question 27: Resolution steps for Extra antigens.
Answer: Acidify reagent, another manufacturer monoclonal reagents for Anti-A, Anti-B, or warm wash
patient's cells with saline warmed to 37C at least three times
Question 28: **Cold agglutinin is similar to.
Answer: Cold autoantibody (Anti-I)
Page 3
, Question 29: Which of the following statements is false regarding cataracts?
Answer: Cataracts will only form in the nucleus of the lens.
Question 30: ________ is the condition in which both eyes have equal refractive power.
Answer: Insometropia
Question 31: 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 32: 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 33: Causes of Extra Antibodies.
Answer:
1. subgroups of A: Anti-A1
2. cold alloantibodies
3. cold autoantibody
4. rouleaux
5. transfusion ABO (varied plasma)
Question 34: Which cold alloantibodies can be neutralized?
Answer: Anti-Lea, -Leb, -P1
Question 35: _______ are _____ cells that detect motion within a field.
Answer: Rods-Long
Question 36: 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
Question 37: The triangular structure between the choroid and root of the iris, containing the ciliary
epithelium, stroma, and ciliary muscle is the:.
Answer: Ciliary body
Page 4
