Key:
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
Essential Forms
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Totals: | Evaluation #1 (red) | Evaluation #2 (blue) | Evaluation #3 (green) |
|---|---|---|---|
| Total for Rating I | 9 | ||
| Total for Rating II | 7.75 | ||
| Combine both ratings to get overall CVI Range | 7.75–9 |
First evaluation on 00/00 shows range of CVI to be 7.75 to 9.
| No functional vision |
0 1 2 3 4 5 6 7 8 9 10 ^00/00^ |
Typical or near-typical visual functioning |
Figure1: Line graph from 1 to 10, 1 representing no functional vision and 10 representing typical or near–typical visual functioning.
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
The CVI Range: Across – CVI Characteristics Assessment Method
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
Rating I
Rate the following statements as related to the student/child’s visual behaviors by marking the appropriate column to indicate the methods used to support the scores:
- O = information obtained through observation of the child/student
- I = information obtained through interview regarding the child/student
- D = information obtained through direct contact with the child/student
In the remaining columns, indicate the assessed degree of the CVI characteristic:
- R = The statement represents a revised visual behavior
- + = Describes current functioning of student/child
- +/– = Partially describes student/child
- – = Does not apply to student/child
| O | I | D | R | + | +/– | – | |
|---|---|---|---|---|---|---|---|
| x | x | x | x | May localize, but no appropriate fixations on objects or faces | |||
| x | x | x | x | Consistently attentive to lights or perhaps ceiling fans | |||
| x | x | x | Prolonged periods of latency in visual tasks | ||||
| x | x | x | x | Responds only in strictly controlled environments | |||
| x | x | x | x | Objects viewed are a single color | |||
| x | x | x | x | Objects viewed have movement and/or shiny or reflective properties | |||
| x | x | x | x | Visually attends in near space only | |||
| x | x | No blink in response to touch or visual threat | |||||
| x | x | x | x | No regard of the human face |
| O | I | D | R | + | +/– | – | |
|---|---|---|---|---|---|---|---|
| x | x | Visually fixates when the environment is controlled | |||||
| x | x | x | Less attracted to lights; can be redirected | ||||
| x | x | Latency slightly decreases after periods of consistent viewing | |||||
| x | x | x | May look at novel objects if they share characteristics of familiar objects | ||||
| x | x | Blinks in response to touch and/or visual threat, but the responses may be latent and/or inconsistent | |||||
| x | x | x | x | Has a “favorite” color | |||
| x | x | Shows strong visual field preferences | |||||
| x | x | x | x | May notice moving objects at 2 to 3 feet | |||
| x | x | x | x | Look and touch completed as separate events |
| O | I | D | R | + | +/– | – | |
|---|---|---|---|---|---|---|---|
| x | x | Objects viewed may have two to three colors | |||||
| x | x | x | Light is no longer a distractor | ||||
| x | + | Latency present only when the students is tired, stressed, or overstimulated | |||||
| x | x | x | x | Movement continues to be an important factor for visual attention | |||
| x | x | x | Student tolerates low levels of background noise | ||||
| x | x | Blink response to touch is consistently present | |||||
| x | x | Blink response to visual threat is intermittently present | |||||
| x | x | x | Visual attention now extends beyond near space, up to 4 to 6 feet | ||||
| x | x | x | May regard familiar faces when voice does not compete |
| O | I | D | R | + | +/– | – | |
|---|---|---|---|---|---|---|---|
| x | x | x | x | Selection of toys or objects is less restricted; requires one to two sessions of “warm up” | |||
| x | x | x | Competing auditory stimuli tolerated during periods of viewing; the student may now maintain visual attention on objects that produce music | ||||
| x | x | Blink response to visual threat consistently present | |||||
| x | + | Latency rarely present | |||||
| x | x | x | Visual attention extends to 10 feet with targets that produce movement | ||||
| x | x | x | Movement not required for attention at near distance | ||||
| x | x | x | Smiles at/regards familiar and new faces | ||||
| ? | May enjoy regarding self in mirror | ||||||
| x | x | Most high–contrast colors and/or familiar patterns regarded | |||||
| x | + | May regard familiar faces when voice does not compete |
| O | I | D | R | + | +/– | – | |
|---|---|---|---|---|---|---|---|
| x | x | Selection of toys or objects not restricted | |||||
| x | + | – | Only the most complex environments affect visual response | ||||
| x | x | – | Latency resolved | ||||
| x | x | + | No color or pattern preferences | ||||
| x | + | Visual attention extends beyond 20 feet | |||||
| x | +/– | Views books or other two–dimensional materials, simple images | |||||
| x | +/– | Uses vision to imitate actions | |||||
| x | x | + | Demonstrates memory of visual events | ||||
| x | +/– | Displays typical visual–social responses | |||||
| x | x | Visual fields unrestricted | |||||
| x | + | Look and reach completed as a single action | |||||
| x | +/– | Attends to two–dimensional images against complex backgrounds |
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
The CVI Range: Within – CVI Characteristics Assessment Method
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
Rating II
Determine the level of CVI present or resolved in the 10 categories below and add to obtain total score. Rate the following CVI categories as related to the student/child’s visual behaviors by circling (marked with parenthesis on the chart below) the appropriate number (the CVI Resolution Chart may be useful as a scoring guide):
- 0 Not resolved; usually or always a factor affecting visual functioning
- .25 Resolving
- .5 Resolving; sometimes a factor affecting visual functioning
- .75 Resolving
- 1 Resolved; not a factor affecting visual functioning
| 1. Color preference | 0 | .25 | .5 | (.75) | 1 |
| Comments: | |||||
| 2. Need for movement | 0 | .25 | .5 | (.75) | 1 |
| Comments: | |||||
| 3. Visual latency | 0 | .25 | (.5) | .75 | 1 |
| Comments: | |||||
| 4. Visual field preferences | 0 | .25 | .5 | .75 | (1) |
| Comments: | |||||
| 5. Difficulties with visual complexity | 0 | .25 | .5 | (.75) | 1 |
| Comments: | |||||
| 6. Light–gazing and nonpurposeful gaze | 0 | .25 | (.5) | .75 | 1 |
| Comments: | |||||
| 7. Difficulty with distance viewing | 0 | .25 | .5 | .75 | (1) |
| Comments: | |||||
| 8. Atypical visual reflexes | 0 | .25 | .5 | .75 | (1) |
| Comments: | |||||
| 9. Difficulty with visual novelty | 0 | .25 | .5 | (.75) | 1 |
| Comments: | |||||
| 10. Absence of visually guided reach | 0 | .25 | .5 | (.75) | 1 |
| Comments: | |||||
Total of CVI characteristics present (numbers in parenthesis) = 7.75
From Cortical Visual Impairment: An Approach to Assessment and Intervention, by Christine Roman-Lantzy, copyright © 2007, AFB Press, New York. All rights reserved. These forms have been modified to enhance accessibility.
Cortical Visual Impairment (CVI) Assessment
Recommendations video | Recommendations transcript
Student: Ian
Assessors: Lynne McAlister, TVI; Sara Kitchen, TVI
Date: 00–00– 00
Ian was assessed using the Roman–Lantzy (2007) CVI resolution assessment tool. At today’s evaluation date, he is 17 years old. The primary goal of this assessment is to determine functional vision abilities and to identify potential characteristics of CVI that may be interfering with Ian’s functional performance.
Ian’s medical history is consistent with the neurological disorders often associated with CVI. His primary handicapping condition is traumatic brain injury. Ian does not wear corrective lenses and his eye exam indicates CVI as the reason for his visual impairment. The evaluation consisted of analyzing videotapes of Ian in several environments as well as information from his parents and the staff members who work with him. Ian demonstrated characteristics of CVI. This report will be organized according to these characteristics.
Color preference:
Some people with CVI seem to respond more quickly to objects of a particular color. Ian hovers between total resolution of color vision and still preferring certain colors. While he looks at objects of any color, he seems to gravitate toward shades of red and yellow. Ian’s mother states that in the past he may have needed an object to be red or yellow but he is beyond that now. However, he usually picks out red and yellow cars when asked to point them out on the highway. When presented with an array of multicolored skittles, he picked up a red one first, then a yellow. Red shades seem to be the most easily seen color, but when asked to pick up a red block from a colored array he chose an orange block and told me it was red. When asked in the same situation to pick up any block and tell me it’s color, he chose and accurately named the yellow. After picking up a red block, he studied it for some time before correctly identifying it. At a grocery store, he was asked to pick one fruit/vegetable from the array on the shelf. Ian chose a red pepper and named the color orange. He identified a red onion and red apple as orange. When asked to pick another fruit from an array that did not have any red objects in it, he chose a yellow squash. He correctly identified a drawing of a red stop sign saying, “Red, it’s a stop sign.” He identified a drawing of a yield sign as, “a yellow sign.” When asked to identify several multicolored objects, he would invariably pick them up first and then look at them. When asked to identify the object only visually, he looked at it and picked it up. After handling the objects, he correctly identified most of them. He did not identify a brown action figure, but did say that it was orange. While not recognizing a picture of the outside of the campus natatorium (he identifies it as a “building”), when shown a picture of the inside he said, “blue…it’s the pool. I can see it better because it’s blue”. He could not identify a photo of a familiar campus location that was black and white, only identifying the pavilion as being outside. These reactions seem to indicate that color acts as a visual magnet for Ian. He seems to see objects that are in the red/orange spectrum as well as yellow more easily than others. This visual behavior in students with CVI has been corroborated in the literature.
Need for Movement:
Many people with CVI respond best visually to targets that move in space or have reflective properties. Ian’s mother says while he probably attends to things better if they move, he does not require it anymore. When presented with shiny, moving objects in his peripheral fields, Ian seemed to see the objects a second before he saw them when they were not moving, but it was not a noticeable difference. Ian looks at objects that are neither moving, shiny, nor reflective. This CVI characteristic seems to have been resolved.
Visual Latency:
This characteristic manifests itself with a delayed response between the time a target is presented and the time when an individual sees it. Ian showed little or no delay in directing his vision to a target. However, he did show delays in correctly identifying a target, such as photos and objects. He took some time to study these items, sometimes moving the item around as an aid in recognizing it. Physically handling objects seemed to directly affect his ability to identify them. Ian displays a visually guided reach, meaning he is able to look at an object and use that information to touch it.
Visual Field Preferences:
Many students with CVI have strong visual field preferences. These field differences are typically not due to damage to the retina or other structures of the eye, they are caused by damage to the visual pathways of the brain. Ian was able to pick up skittles placed in all of his visual fields. He recognized objects coming from behind him without restriction in his right, left, upper, and lower fields. He used his central visual fields to look at objects. These behaviors indicate that this characteristic has been resolved. However, Ian’s mother reports that he tilts his head to the right when viewing objects, and he seems to have a harder time attending to things that are in his lower visual fields. This may be from a difficulty controlling the movements of his head and eyelids, or may indicate a continuing visual difficulty with visual fields.
Visual Complexity:
Difficulties with visual complexity can mean difficulty with the complexity of the surface of the object, of the viewing array, or of the sensory environment. Along with color, this seemed to be the most challenging aspect of Ian’s vision. His mother states that his vision is compromised when there are a lot of things competing with what he is trying to see. When there are too many objects in his visual field it is overload. He may try but then he gives up. Ian was able to identify salient features in two and three–dimensional materials with backgrounds of low complexity. To look at these materials, he often would either bring the object 8 to 12 inches from his eyes, or lower his head the same distance. This succeeds in blocking out background clutter, and is not necessarily an indicator of impaired acuity. However, it is important to refer to an eye specialist when there is a question of visual acuity impairment. Ian’s eye doctor has given him acuity of 20/20. Ian’s mother was also unsure of his ability to interpret two–dimensional pictures, stating that he may be guessing. Ian was able to identify photos of a van, a person (“it’s a girl”), and the school cafeteria full of people. When presented with a Meyer–Johnson picture of a round smiling face, he asked if it told time. After four pictures he had correctly identified were placed on a very colorful patterned background and asked to find the pool picture, he bent his head four inches from the array and studied it for approximately 45 seconds. He then chose the picture of the white van. After being given a lime at the grocery store, Ian could not name identify it or state it’s color while holding it over the array of the other fruit and vegetables. When asked to turn so that he was holding over the brown floor, he stated it was “greenish”. He was also able to identify an orange when he held it over the uncluttered floor. When asked to identify unspeaking people sitting next to him, Ian accurately named his teacher and TA. When asked to identify a job coach, Ian initially identified him as his RI, and then correctly named him. Faces present a very complex visual array, and the inability to recognize them is very common among people with CVI. This characteristic seems to be resolving in Ian.
Light Gazing and Non Purposeful Gaze:
Some people with CVI have abnormal responses to light, either staring at light, or photophobia. Ian displays none of these behaviors.
Difficulty with Distance Viewing:
Ian recognized a van at a distance of 20 feet. However, distance vision is greatly affected by difficulties with visual complexity, as the further you look the more things that are in the visual field.
Atypical Visual Reflexes:
Ian blinked when a hand approached his face. This is a typical response of the eye to a visual threat.
Difficulty with Visual Novelty:
Many individuals with CVI tend to visually attend to objects or targets seen previously, but may ignore visually novel or new things. Ian’s mother states that in unfamiliar situations it may be more difficult for him to process visual input. She reports that he learns through repetition. When he gets tired it is harder for him to see. Ian seemed to be able to see all the objects I presented, but it took him several seconds of study before he could name an unfamiliar object or picture. This delay was most pronounced in very complex visual environments. Ian told his teacher that if he studied flash cards with sight words on them he would be able to read them better. When Ian’s job coach sat down next to Ian silently within the context of a routine that did not normally include the job coach, it took Ian at least a minute to name him correctly, first labeling him a RI. Ian’s mother states that he has a difficult time with language retrieval paired with visually novel objects
Absence of Visually Guided Reach:
This characteristic may be thought of as hand–eye coordination. Ian’s mother reports that using his hands and eyes together is difficult for him. Ian is able to look at something and pick it up simultaneously. However, once he is holding an object he may not look at it as he tactually manipulates it to aid in recognizing it. In one session with us, Ian insisted on picking up the novel objects we showed him, even though we asked him to just look at them. Tactual input seems to assist him with object recognition.
Lynne McAlister, CTVI, and Sara Kitchen, CTVI
Recommendations
- Color should be used to anchor Ian’s vision to the objects he needs to look at. The colors red, orange, and yellow should have dominance, then the other colors in the spectrum. This may be done by using color photos of people and places to organize his calendar or some other familiar sequence, the current event highlighted with a red or yellow cardboard frame that can be moved from picture to picture. Highlight visual targets with red/orange spectrum colors to draw Ian’s visual attention. Use labeled color photographs (of items, places, etc., that contain color) as symbolic representations in Ian’s daily schedule/activities. Drawn pictures may also be useful as an organizational tool within lessons, especially if he is involved in the drawing and labeling process. These labeled pictures may take the place of written notes. Perhaps experiment with bold print on a red or yellow background to see if this aids in his sight word recognition. The goal is to allow Ian access to a learning media that does not depend on another person to deliver it. Ian may not be able to recognize either the picture or the word at first, but through consistent exposure he may be able to more easily process the information to the point of the picture no longer being necessary.
- Present visual targets on a plain background. Allow Ian to bring items close to his face in visually cluttered environments. Always be aware of the visual environment behind the object he is looking at. Simplifying the background of an object or person may allow him to recognize it.
- Allow Ian tactual access to objects to assist in recognition. Also, encourage exploration of objects to increase Ian’s knowledge of the tactual properties of objects as they relate to the visual aspects. Encourage Ian to look and manipulate objects at the same time.
- Use some sort of occluder to block out excess detail on a page of images or symbols. For example, block out all but the individual word that is being read.
- Experiment with spacing between letters in words to see if it is easier for Ian to recognize the letters when they are farther apart.
- Highlight environmental landmarks as necessary.
- Consider the use of a cane, which may help Ian remain anchored to the environment in the presence of a high degree of environmental complexity.
- Allow Ian time to study a novel object/word before requiring a response. Perhaps he could be given the opportunity to examine materials for an upcoming lesson without adult intervention so that he has some degree of visual recognition of the task.
- Be aware that Ian experiences visual fatigue after approximately 10 minutes of consistent uninterrupted viewing. This is especially apparent with novel items. Upon reaching this point, Ian stops looking. Build in frequent breaks when asking Ian to use his vision, allowing him to also respond auditorially.
- While movement may aid Ian’s use of vision, when he is upright and walking he is also concentrating very hard on those motor skills. This divided attention may detract from his ability to process visual input. It will be easier for Ian to perform complex visual tasks when his body is stable and seated.
- Christine Roman states that instruction for a student with a high resolution of CVI characteristics, such as Ian, has two main themes: teaching sorting skills with reference to the concepts of alike and different, and disembedding salient features from a background. Learning how to compare and contrast the visual properties of objects supports the ability to analyze novel information and visual complexity. Learning to differentiate a feature or object from a background supports the development of the ability to differentiate details and make fine visual discriminations.
- As with any student with CVI, Ian’s functional vision may be affected by factors such as stress, over–stimulation, fatigue, or too much visual novelty.





We welcome your comments and ideas. However, please keep in mind that these comments are moderated. We reserve the right to reject comments that do not follow TSBVI's Comment Policy. In addition, we reserve the right to edit/delete comments containing the following:
Please think of the comments as a conversation between individuals and interact with civility. Also, as with conversations some time you have to pause. You must wait 60 seconds between posting comments.