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ABO CERTIFICATION TRAINING EXAM
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ABO CERTIFICATION TRAINING EXAM
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ABO CERTIFICATION TRAINING EXAM 2024 NEWESTCOMPLETE 200 QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT) /A+ GRADE ASSURED
What are the three layers of the eye? - ANSWER: Fibrous tunic, vascular tunic, and
nervous tunic
What are the five layers of the cornea from anterior to posterior? - ANSWER:
Epthelium, Bowmans Membrane, Stroma, Descemets Membrane, Endothelium
What controls the amount of light entering the eye? - ANSWER: Iris
How many rods and cones are in the eye? - ANSWER: About 120 million rods and 6
million cones
What is the name for the refractive condition where light comes in to focus directly
on the retina? - ANSWER: Emmetropia
What is the name for the refractive condition where light comes in to focus behind
the retina? - ANSWER: Hyperopia or far-sightedness
What is the name for the refractive condition where light comes in to focus in front
of the retina? - ANSWER: Myopia or near-sightedness
What is the name for the refractive condition where light comes to focus on two
different points? - ANSWER: Astigmatism (cylinder)
The onset of presbiopia typically begins at what age? - ANSWER: 40
The 6 extraocular muscles responsible for stabilization of the eye are: - ANSWER:
Lateral rectus, medial rectus, superior rectus, inferior rectus, superior oblique,
inferior oblique
What is the term for an eye that has a tendency to turn from it's normal position? -
ANSWER: Phoria
What is the term for an eye that has definite or obvious turning from it's normal
position? - ANSWER: Tropia
Phorias and tropias are defined by their direction of movement: outward, inward,
downward, and upward.What are these terms? - ANSWER: Exotropia, Esotropia,
hypotropia, hypertropia
We really see with our - ANSWER: Brains
, Everyone will suffer from optical error this if they live long enough - ANSWER:
presbiopia
Astigmatism means that the patient's cornea is - ANSWER: Misshapen
The fibrous tunic consists of - ANSWER: sclera and cornea
Fusion occurs in the - ANSWER: brain
Aqueous humor is produced in the - ANSWER: ciliary body
The index of refraction of the cornea is - ANSWER: 1.37
When light entering the eye, without corrective lenses, comes to a focus partially in
front of the retina and partially in back of the retina, the patient's refractive error is -
ANSWER: Mixed astigmatism
When light entering the eye, without corrective lenses, comes to a focus in front of
the retina, the patient's refractive error is - ANSWER: Myopia
The patient normally has no need for any visual correction for distance but does
require prescription lenses to see well at near. This patient's refractive error is
known as - ANSWER: Presbiopia
An RX with OD minus and the OS plus is an obvious case of - ANSWER: Antimetropia
Accomodation is defined as - ANSWER: The act of the crystalline lens changing its
shape to focus for objects at varying distances
The speed of light is - ANSWER: 186,000 miles/second
The wavelength of 700mm is seen as what color - ANSWER: Red
In a minus powered lens, light rays _____ and come to a focus ________the lens -
ANSWER: Diverge, In front of
Light rays pass through a lens and converge at a point 50cm behind the lens, what is
the power? - ANSWER: 2.00D
1 prism diopter can be described as deviating a ray of light - ANSWER: 10cm/1000cm
3 prism diopters base in on the right eye ca nalso be described as - ANSWER: 3 prism
at 0 degrees
Using the Prentice Rule, a -4.00 lens must be decentered ________to induce 1.00
prism diopter - ANSWER: 2.5mm
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