Term
| In the pyramid of BV anomalies, where does suppression and ARC fall? |
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Definition
| -into integrative anomalies |
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Term
| Can orthoptics/VT teach a patient to fuse? |
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Definition
| -no, can only help a patient that already has the ability to fuse |
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Term
| What are the 3 questions concerning tx for suppression and ARC? |
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Definition
-should these integrative anomalies be aggressively treated
-if treated, is it effective
-what is the most effective treatment |
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Term
What are the 3 goals of strabismus treatment?
What percentage of cases will normal VA be obtained?
Is it likely that all 3 of these goals will be achieved? |
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Definition
-normal VA and erradicaiton of amblyopia
-NBV with high grade stereopsis
-favorable appearance
-only ~50%
-no, it is very rare they all are obtained |
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Term
Can ARC be converted to NRC with treatment?
What did the Flom study report about treatment rate of ARC in ET and XT? |
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Definition
-we don't know, there are only a few studies on this and they are not evidence based
-ET ~5% cure rate and XT~ 50% cure rate |
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Term
| What are the 4 methods of treatment for ARC? |
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Definition
-occlusion
-EOM surgery
-prism therapy
-orthoptics/VT |
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Term
What is the prefered txt methof for ARC?
What might happen to RC after EOM surgery?
If the patient is ortho post surgery, what might happen?
If they have residual ET post surgery what might happen?
If they are ortho or overcorrected with surgery and now essentially become XT, what might happen?
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Definition
-occlusion
-it could change
-they may develop NRC
-they may develop a new HARC (covariation) or an UHARC (paradoxical projection)
-there is a better change for ARC to change to NRC post sx |
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Term
In post EOM sx with covariation angle ___ covaries with angle ___, and angle __ = ___.
In post EOM surgery for ET, if UHARC develops (paradoxical projection) what will be measured on angle A and angle S- BI or BO? |
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Definition
H, A; S=0
-angle H will be measured BO, and angle S will be measured as BI |
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Term
| What are the three mechanisms of covariation and in what conditions are they most likely to develop? |
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Definition
-New ARC develops- younger patients usually
-point to area a- incomitant strab
-vergence movement- anomalous fusional movement |
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Term
What two therapies are used in orthoptics/VT for ARC?
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Definition
-mirror stereoscope and synoptophore
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Term
What will a patient with ARC experience with the mirror stereoscope?
What percent or strabs have superficial ARC? Is this treated?
Are pts with moderate ARC treated?
Are pts with deep ARC treated?
In the Mallett study of 1979, what percentage of ARC patients were actually treated? |
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Definition
-monocular diplopia and binocular triplopia
-80%; no
-yes, with prism and orthoptics/VT
- no, no txt here
-7% |
|
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Term
Can aquired UHARC be treated effectively?
How would prism be Rxd in a case like this?
In a patient with NRC, if there is a chage in the angle H, do you expect NRC to be lost or maintained?
In the scenario above, assume the patient began with ARC, would you expect ARC to be maintained? |
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Definition
-yes
-prism to move the image to point A (anomalous retinal point)
-maintained
-ARC may be maintained or they may develop NRC |
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Term
In which patients cn suppression be treated?
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Definition
-young pts (limited due to cooperation)
-intermittent strabs
-constant strabs with normal fusion potential as determined by synoptophore, prisms, etc
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Term
| What are the 8 treament methods used in suppression? |
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Definition
| -synoptophore, mirror stereoscope, prisms, anaglyphs, cheiroscopic tracing, physiological diplopia techniques, polaroid techniques, bar readers |
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Term
| How might prisms be beneficial in terms of post surgical outcome? |
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Definition
| -can determine whether the patient is likely to have presence or absence of diplopia post surgery |
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Term
What are the 2 anaglyphic techniques we talked about in class?
Descrive the setup of teh cheiroscope?
What does physiological diplopia refer to?
What txt method uses physiolocial diplopia? This test is known as the _____. |
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Definition
-TV trainer and red drawings (give patient a red crayon and place the green filter before the suppressing eye)
-a picture is viewed in a mirror by one eye and is projected onto a blank drawing paper to be traced
-when focusing on objects close to you, object farther away will be double and vice versa
-Brok string; panacea- remedy for all things |
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Term
| What are some polariod treatments that can be used? |
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Definition
| -TV polarizers with glasses, Bar readers with glasses |
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