Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
On vergence testing, if the patient reports no diplopia, what should you ask next? |
Tell me if the image goes right or left |
|
|
(cont from "patient reports no diplopia")...and if that doesn't solve the problem? |
Occlude one eye for a few moments, then start from it being two and see when it becomes one. Record a + sign by the total prism of the break value, to report that the patient had taken you to the max |
|
|
You suspect suppression. When you use increasing BI vergence, the patient reports that the image moves to the right. Which eye has been suppressed by the brain? |
OS |
|
|
You suspect suppression. When you use increasing BO vergence, you discover that the left eye has been suppressed. How did you determine this, based on what the patient reported during the test? |
The patient reported that the image moved to the left |
|
|
What do you know happened if your patient reports blur using BI prism? |
You over-minused your patient |
|
|
What recording tells you that the patient's recovery is poor? |
The recovery point is less than half the break point |
|
|
How do we know if a patient will be comfortable, if we only know their demand and their reserve? |
Their reserve should be at least 2x their phoria |
|
|
If the patient's phoria at 40 cm is 6 eso, which vergence testing data should we look at, BI or BO, to determine their reserves? |
40 cm BI |
|
|
40 cm phoria: 4 exo. 40 cm BI vergence 14/20/12 40 cm BO vergence 7/10/6. What is the patient's amount of reserves? What is the patient's total NFV used up when the patient finally blurred? Total PFV? |
Reserve = 7; Total NFV = 10; Total PFV = 11 |
|
|
Part 1 You find out that your 40 cm 8 eso patient hates prisms. You check her vergence ability to see if she even needs prisms. After testing, you record 40 cm BI 10/20/14 and 40 cm BO 6/11/6. Does she need prism? |
Yes, because her vergence (10) is less than 2x her phoria (8) (Go to part 2) |
|
|
Part 2 Since she hates prisms, you try to think of another alternative. Assuming that her acuities turn out ok, what refractive correction should you give her? (Tool: Her 6m phoria is 3 eso and her PD is 58) |
You determine her AC/A to be 7/1. A +0.25 should be given, because she only needs 2 BO prism to meet Sheard's criterion, which, based on her AC/A, would be met with just a quarter diopter plus given. |
