Computerized Vision Therapy – Flashcards
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how does Computerized VT enhance the therapy sessions?
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provides a reward
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computer programs can be used both in office and at home for the improvement of what 2 skills?
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1. visual efficiency 2. perceptual skills *these same activities than can be done w/ devices and paper can be done on a computer
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what is mobile therapy?
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doing VT on a tablet, esp. for amblyopia
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what are 4 examples of computer programs for VT?
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1. *Home Therapy System (HTS)* 2. *Computer Orthoptics* 3. Gemstone 4. Sanet Vision Integrator *huge screen
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what is the main downside to computer VT?
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it has it's own goals
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what are 7 HTS programs?
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1. BI vergence 2. BO vergence 3. Autoslide vergence 4. Jump ductions 5. pursuits 6. saccades 7. acc. rock
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explain how the Autoslide vergence program works on the HTS
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-pt wears RG glasses -same activity as BI/BO vergence (such as tranaglyphs), but stimulus changes at intervals instead of at pt. response
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explain how jump ductions (jump vergence) works on the HTS
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-same activity as other vergence programs, but stimulus jumps back and forth between BI & BO
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explain how pursuits program works on the HTS
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-tumbling E moves around the screen while pt hits arrow key matching orientation of E -computer records average response time & percent correct
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explain how the saccades program works on the HTS
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-arrow appears at different places on screen while pt hits arrow key matching direction of arrow -computer records average response time and percent correct
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explain how to acc. rock works on the HTS
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-pt wear Red BLUE glasses w/ (+) add over one eye and (-) add over other eye -red acuity task alternates with the blue acuity task -computer records cycles/min and percent correct responses for each eye
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why doesn't Dr. lyon use Acc. rock?
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it's not engaging for pt
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what kind of googles does computer orthoptics use?
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liquid crystal goggles
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is computer orthoptics more for in-home or in-office?
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in-office
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what 4 activities does computer orthoptics have?
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1. vergence 2. saccades 3. pursuits 4. acc.
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what is the main advantage of the liquid crystal system used by computer orthoptics over HTS?
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allows a greater variety of targets for vergence
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explain how pursuits work on the computer orthoptics
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-dinosaur or other object moves around screen while pt uses mouse to keep square on dinosaur -computer records percentage of time on the dinosaur
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explain how rotations work on the computer orthoptics
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target rotates around screen while doing vergence
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which 2 computer orthoptics activities are similar to the HTS?
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saccades & acc. rock
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what is the minimum observable amount of movement seen on cover test?
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2-4^
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Not doing cover test does NOT rule out a clinically significant vertical imbalance. What other test must be performed?
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dissociated phoria tests 1. Von Graefe 2. Modified Thorington 3. Maddox Rod
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if dissociated phoria test isn't 0, what tests should you follow up with?
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Associated phoria tests: 1. Mallett 2. AO vecto 3. Saladin
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why should you always neutralize horizontal phorias before vertical?
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because the vertical phoria may go away with the horizontal
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although you CAN stack prisms after neutralizing horizontal phoria and moving to vertical, what is the one catch?
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they MUST be 90 degrees apart
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usually vertical prism is used to correct what kind of vertical phoria?
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vertical ASSOCIATED phoria *moderate dissociated vertical phoria and smaller amount of associated phoria
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what are 2 indications for performing VT on vertical phorias?
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1. prism doesn't relieve symptoms completely *must try this first!!! 2. patient doesn't want to wear glasses (VT may still not be best choice)
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what are the 3 components of VT for vertical phorias?
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1. *Anti-suppression training* 2. horizontal fusional vergence training 3. vertical fusional vergence training
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what are the 5 types of tests used for training vertical fusional vergence?
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1. variable tranaglyphs turned 90 degrees 2. nonvariable tranaglyphs with vertical separations 3. vertical loose prisms/vertical prism flippers 4. vertically separated eccentric circles or other free space fusion targets 5. vertical computer therapies
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why are tranaglyphs preferred over vectograms?
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vectogram results messed up by head tilt
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which generally takes longer- horizontal or vertical therapies?
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vertical therapies
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should vertical phoria tests be performed with the pt's head in his/her's usual position or with the head aligned?
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head aligned
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what 6 things CAN VT treat?
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1. acc. issues 2. vergence issues (lateral & vertical) 3. EOM Deficiencies 4. visual information processing deficiencies 5. visual efficiency deficiencies secondary to concussions 6. visual deficiencies due to strokes 7. visual abilities of athletes
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what 3 things can VT NOT treat?
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1. learning disabilities 2. ADHD 3. dyslexia
