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Test Visual Fields of Individuals who are Blind or Visually Impaired

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Test Visual Fields

By: Carmen Willings   
teachingvisuallyimpaired.com
Updated May 19, 2019


The area that can be seen by the eye without shifting the gaze is known as the visual field. As part of the Functional Vision Evaluation, it is necessary to assess the student's visual fields. The technique used will vary depending on the students cognitive abilities. It is important to assess the student's visual fields even if the eye report indicates that there are no limitations in visual fields. Many optometrists and ophthalmologists will not formally test visual fields due to the student's age and cooperation. Normal visual fields in each area are 60 degrees from the nasal side, 90 degrees from the temporal side, 50 degrees superior (above), and 70 degrees inferior (below) from center. 

Visual Field Assessment

Observation can often be the best way to observe the student's use of visual fields and note any areas of concern. ​Confrontation Field Testing is a way to informally measure the visual field. In a confrontation test, the student is positioned in front of the assessor. The individual is asked to look at the assessor's nose. A highly visible object is presented in a semicircle way from behind the student's head toward the assessor. The student indicates when they are able to perceive the object. 

Field Loss Implications

The central visual field is the "what" system, while the peripheral visual field is the "where" system. The visual field is the entire area of vision that can be used without shifting the eyes or moving the head, encompassing 180 degree arcs. Assess the student's visual fields including the student's preferences or limitations. Observe the students response to materials presented in the central visual field and to the peripheral visual fields. Note where the student responds to materials. Estimate the number of degrees from the nose.

Note other signs of possible field loss including: over-scanning; eccentric viewing; holding object to the side, up, or down to inspect it; stumbling over low-lying objects; functional peripheral vision is often a source of distractibility. A student's scanning of an array of objects or looking for a missing object can demonstrate his functional visual field at near point. For example, a compensatory head turn suggests a peripheral field loss to the side of the head turn, since the student has learned to compensate by moving the usable visual field toward the side where information is missing.

The performance of activities, such as scanning a map or doing a word-search puzzle, can also suggest where scotomas (areas of absent vision) may be located, because if students are asked to keep their heads perfectly still while doing them, they may miss information in some areas of the tasks. Students who walk with their heads turned slightly to one side may be compensating for a difference in visual fields. Eye preference, evidenced in typical tasks, can also be evaluated.

Observe special visual behaviors and repetitive behaviors including eccentric viewing, stereotypical behaviors, and fluctuating visual abilities. Observe whether the student uses corrective lenses and tolerates them. Also indicate if the student has received Orientation and Mobility services. Note how the student currently travels indoors, outdoors, in familiar and in unfamiliar environments.

The absence of a full (180 degrees) peripheral field may cause difficulty in sports and social difficulty due to not seeing those in their visual field or by using an odd posture in order to see. They also may not see downward flight of stairs or a curb. It also may limit the amount of letters/words can see at a time.

Suggestions & Strategies

Depending on the results of the Visual Fields Testing, the following strategies, recommendations, and accommodations may be necessary to meet the students unique visual needs:
  • Seat to left/center/right side of room depending on field of vision
  • Caution in PE or at recess with fast moving balls or objects
  • Train the student to scan the environment prior to entering a new area
  • Refer for O&M evaluation.

Conducting a FVLMA Recorded Presentation

$25.00

This presentation provides a walk-through of the process and steps of conducting a Functional Vision Evaluation and Learning/Reading Media Assessment. Key points include interpreting the eye report, materials to use in the assessment, conducting interviews and observations as well as strategies for direct assessment and writing a professional and thorough report that is informative to all audiences. Next steps are also covered including the importance of a low vision assessment, determining the need for additional assistive technology and implications for service. 


Objectives:


  • Effectively interpret eye reports
  • Select appropriate materials for conducting the FVELMA
  • Develop strategies for assessment,
  • Write professional FVLMA reports that include key components
  • Apply information gained to determine next steps

Includes:


  • Recorded PowerPoint Show Presentation
  • Transcript
  • Presentation handout for note taking
  • Printables & Links to Resources discussed in presentation


Request a Certificate of Completion

To receive a certificate of completion for 1 contact hour (1 CE hour credit), complete the short Conducting the FVLMA quiz on Google Forms and receive a score of at least 80%. Don't worry. If you don't pass, you can look over your notes or re-watch the presentation and retake the test! If you have any difficulty accessing the form, please contact me so we can troubleshoot!


System Requirements:

Presentations are recorded PowerPoint presentations. You must be able to access PowerPoint to view the PowerPoint presentation. Please note that the presentation pages are closed member pages available to individuals who have purchase access to the presentation. 


*Please contact me if you need to purchase using a purchase order. I am happy to help guide you in the process of adding Teaching Students with Visual Impairments as an approved vendor for your school or program or you can visit the product support page for information on using a PO.

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The mission of Teaching Students with Visual Impairments is to provide all persons involved in education students who are blind or visually impaired with the necessary resources to help each student become successful members of their communities and to equip those in the visual impairment field with resources to meet the wide range of needs of the students they serve. ​
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  • Home
  • Foundations of VI
  • Professional Practice
  • VI Service
  • Adaptations
  • VI Assistive Tech
  • ECC Instruction
  • About
  • Contact
  • VI Store & Gifts
    • VI Gift Shop >
      • Braille Jewely
      • VI Shirts
      • VI Drinkware
      • Vision Bags & Totes
      • Braille Greeting Cards
      • White Cane Tags/Keyrings
    • ECC Instructional Resources >
      • TVI's Guide Complete Set Bundle
      • TVI's Guide to Teaching the ECC
      • Thematic Keyboarding & Braille Fluency Worksheets
      • Visual Efficiency & Magnifier Fluency
      • Task Box Activities
      • Vocabularky Cards & Checklists
      • Interactive Sensory Stories
      • Interactive Matching Activities
      • Untitled
    • Purchase Recorded Presentations >
      • Presentation Complete Set of 16
      • Foundations of Teaching the ECC
      • Itinerant Teaching Strategies & Tips
      • Strategies & Activities for SIDPID
      • Strategies & Activities for MIMO
      • Job Tasks for Jobs, Career & Life
      • Strategies & Activities for Standard Course of Study
      • Accommodations for BLVI
      • Accessible Content for BLVI
      • Using Themes to Teach the ECC
      • Tips for Being a Physically Fit TVI
      • Conducting a FVLMA
      • Developing SMARTER Goals
      • Determining Service Intensity Using the VISSIT
      • Selecting the Right AT
      • The Art of Teaching the ECC
      • Activities to Teach the ECC
    • Job Postings
    • Product Support
  • Jobs
    • Post a Job
    • TVI, Jersey City, NJ
    • O&M Specialist, Jersey City, NJ
    • Consulting Teacher for Blind/Low Vision, Idaho
    • TVI or Dual TVI/COMS, North Carolina
    • TVI Portland & Brunswick, Maine
    • Assistant Director Edu. Services for Blind & VI, Maine
  • Paid Member Pages
    • Recorded Presentations
    • Complete Set Bonus
    • Interactive Sensory Stories
    • Interactive Matching Activities
    • Interactive Visual Discrimination Activities
  • Free Member Pages
    • Free Program Printables
    • Free FVLMA & Service Printables
    • Free VI AT Printables
    • Compensatory Goals
    • Sensory Efficiency Goals
    • Assistive Technology Goals
    • Social Skills Goals
    • Independent Living Goals
    • Recreation & Leisure Goals
    • Self Determination Goals
    • Career & Vocational Goals