Vision & Visual-Perceptual

Question 1

Reading strategies for homonymous hemiapnosia

Answer 1

★ Reading anchor on page (side of deficit)
★ Pre-reading exercises (search for specific letters, numbers, or words to assist with accuracy with saccadic movements)
★ Large print material or magnification (reduces density of text, requiring less saccadic precision)

Question 2

Homonymous hemiapnosia

Answer 2

★ Visual field loss on the same side of both eyes (right or left)

★ Common causes: stroke, traumatic brain injury, brain tumors

★ Client may bump into objects or ignore stimuli on the affected side

★ Lesion is contralateral to the side of vision loss (e.g., right occipital lobe → left visual field loss)

★ May impair reading, driving, navigation, and daily activities

★ Management: visual rehabilitation, compensatory strategies (e.g., scanning training)

Question 3

Strategies to increase functional mobility for individuals with homonymous hemiapnosia

Answer 3

★ Scan course & narrated walk
– Promotes systematic & organized visual search of the environment
– Increases client’s awareness of the visual deficit and the need to compensate for the lost vision

★ Balloon volley
– Encourages effective & efficient head movements to locate the balloon & volley the balloon back

Question 4

Compensations associated with homonymous hemiapnosia

Answer 4

★ Turn head to completely search blind visual field
★ Learn to anticipate visual input on the impaired side & develop organized & effective visual search pattern

Question 5

Metamorphopsia

Answer 5

★ Visual distortion of objects including the physical properties of the objects and using those properties/characteristics for accurate identification

Question 6

Simultanagnosia

Answer 6

★ Inability to recognize & interpret a visual array as a whole

Question 7

Color agnosia

Answer 7

★ Limits the client’s ability to recognize the specific colors for common objects in the environment

Question 8

Color anomia

Answer 8

★ Inability to name the color of objects

Question 9

Prism for oculomotor function

Answer 9

★ used to establish single vision in the primary direction of gaze, looking straight ahead and down

★ reduces double vision or diplopia

★ often used to establish single vision when reading, reducing convergence insufficiency

★ prescribed by optometrists or ophthalmologists

Question 10

Prism for visual field

Answer 10

★ used to widen the visual field for clients with visual field deficits

★ allows for greater vision in the area with reduced visual field

★ prescribed by optometrists or ophthalmologists