This lens will focus light rays at a distance of 1/2 in front of the lens. (specify + or - lens and power)
What is a -2.00 lens?
100
This is a gross measure of convergence ability.
What is the Near Point of Convergence (NPC Test)?
100
This test can normally identify an eye turn greater than 6 diopters
What is unilateral cover test?
100
This condition is an example of pathological cause of Amblyopia.
What is Cataracts.
100
This type of prism will cause a pelvic rotation left, center of gravity to the left, and perception of spatial shift right.
What is Base Left Yoked prism?
200
A group of three events that occur when a person accommodates. (Bonus 50 points - identify the 3 events).
What is a the oculomotor triad?
200
You would want to do this test on a person to determine the reading level to set the visagraph at.
What is the DDT?
200
A condition where a person is first an estrope, undergoes surgery and then becomes an exotrope. (Bonus 50 points if you can name another condition that commonly is a side effect of a strabismus surgery).
What is Consecutive Exotropia. (Bonus = DVD)
200
This refractive condition is most commonly found in our Amblyopes in office.
What is Anisometropia.
200
You would expect this type of difficulty if a child has generally been an OK reader up to Grade 4.
What is Oculomotor Dysfunction?
300
The condition in which a slow or difficult response occurs when a patient tries to shift focus from one distance (or power of lens) to another. (Bonus: what is a normal value for facility? 50 points)
What is Accommodative Infacility?
300
This test is used to measure how accommodation functions in a dynamic way. It is often used to help OD's prescribe readers.
What is the MEM?
300
A mixture of red-green colour that a patient sees when wearing red-green glasses. (Bonus 50 points if you can name when you would NOT want to do this with a patient).
What is Lustre?
300
In this condition, the patient uses a point other than the fovea for straight ahead viewing. (Bonus= does this occur monocularily or binocularily, how can we measure this?)
What is EF (eccentric fixation). Bonus - Monocularily!
300
The ability to determine lefts and right in space and on objects.
What is Directionality?
400
The condition where the ciliary body remains in constant contraction resulting in blur at distance.
What is Accommodative Spasm?
400
These special type of lenses are useful in diagnoses anomolous correspondence.
What is Bagolini Striated Lenses?
400
These type of patients have a larger eye turn at distance than near.
What is a DEXT.
400
Type of fusion target where the targets viewed by each eye are identical in both thier image and distance between corresponding points.
What is second degree target?
400
A phenomenon in which the patient observes spatial changes to the target based on the type of demand being created. (Bonus 50 points if you can draw a diagram to illustrate this).
What is SILO?
500
Identifies the relationship between accommodation and convergence. (Bonus 100 points - tell us how this relationship can be used to give us information about how to approach therapy for this patient)
What is the AC/A ratio?
500
An eye movement with one eye only. (Bonus 50 points if you can name some of the 6 types).
What is a duction?
500
This type of activity allows one eye to centrally fixate while another monitors periphery.
What is MFBF (Monocular Fixation in a Binocular Field)?
500
Due to this Amblyopic patients may have a poorer visual acuity when reading the snellen chart as opposed to identifying an isolated letter.
What is the crowding phenomenon?
500
This term refers to a difficulty in recalling the visual form of words.