vision and learning · vision therapy is a treatment to improve visual efficiency and visual...
TRANSCRIPT
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VISION AND LEARNING
PaTTAN Educational Video Series
Vision Topics March 2011
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MARLA L. MOON, O.D., F.A.A.O.
Pediatric and Low Vision Rehabilitation Optometrist
Nittany Eye Associates 428 Windmere Drive
State College, PA 16801 814-234-2015
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GOALS
• Vision Statistics • What Vision Skills Are Involved in
Learning • Signs and Symptoms to Look For • What Can Be Done???
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VISION >>>>> (leading to) >>>>> LEARNING
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Learning is accomplished through complex and
interrelated processes – one of which is VISION
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STATISTICS AND
STATEMENTS
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IMPORTANCE OF
VISION
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80% of what children learn is acquired through the visual processing of
information (Journal of Behavioral Optometry, Visual Screening of
Adjudicated Adolescents, Vol. 10, No. 1, 1999)
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Vision problems affect 1 in 20 preschoolers and 1 in 4 school-aged children
(Prevent Blindness America – Website – February 2011)
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National Society for the Prevention of Blindness
(Prevent Blindness America) states that an estimated 10
million children below 10 years of age have vision problems which affect their ability to learn
(also noted by National PTA in their Vision Resolution of 1999)
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Vision & Learning It is reported that children with
reading problems exhibit a greater than 50% prevalence of visual deficiencies in focusing or eye alignment as compared to normal achieving peers.
(Grisham, JD, Computerized Visual Therapy – Year 1 Report, Palo Alto, American Institutes for Research, 1986)
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Vision & Learning
Among children who are reading disabled, as many as 80% show a deficiency in one or more basic vision skills.
(Hoffman, LH, “Incidence of Vision Difficulties in Children with Learning Disabilities,” Journal of American Optometric Association, 1985,56:560-563)
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Vision, Learning & Behavior
Children with vision related learning problems revealed that they were experiencing feelings such as a lack of direction, a sense of not belonging, an inadequate sense of self-assurance and a feeling of insecurity, inadequacy and inferiority.
(Zaba, JN, Vision’s Relationship to Delinquency, Illiteracy and Learning Problems, 2001)
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ADHD • Study at the Children’s Eye Center-
University of San Diego • Uncovered a relationship between CI and
ADHD • Patients Dx with ADHD should also be
evaluated for CI and Tx accordingly (Sources – interviews with David Granet, M.D. and Maria Lymberis, M.D. www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd and www.add-
adhd.org/textonly/convergence_insufficiency.html)
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STATS • As many as 2%-5% of preschool
children, amounting to nearly 1 million children nationwide, are estimated to have impaired vision
(Maternal and Child Health Improvement Project Summary, American Academy of Pediatrics, August 2001)
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STATS
• Of the 74 million children in America, only 14% have had an eye exam by the age of 6 years
(Poe, GS, “Eyecare Visits and Use of Eyeglasses or Contact Lenses”, United States 1979-1980. Vital and Health Statistics Report, Series 10, No. 145, Department of Health and Human Services Publication (PHS) 84-1573, Hyattsville, MD, February 1984)
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STATS
• 75,000 3 year olds develop amblyopia EACH YEAR, but ½ of children are diagnosed after age 5
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STATS • American Public Health Assocation –
encourages regular comprehensive eye examinations scheduled at approximately 6 months of age, 2 years, and 4 years.
(American Public Health Association, “Improving Early Childhood Eyecare,” Policy Number 2001-1)
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NEUROSENSORY RESEARCH
• Dr. Drake Duane • International Authority on Dyslexia
and Learning Disorders • Arizona State University
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Dr. Duane’s Research • His research suggests that dyslexia
may not be a malfunction in the way people understand language but rather a brain abnormality that involves the sense of VISION and perhaps also hearing and touch
(NYTimes – September 15, 1991 – Sandra Blakesless)
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NATIONAL PTA
VISION RESOLUTION
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NATIONAL PTA
• Resolution adopted at the National PTA Convention – June 1999
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National PTA Resolution • WHEREAS, It is estimated that more than
10 million children (ages 0-10) suffer from vision problems; and
• WHEREAS, Many visual skills are necessary for successful learning in the modern classroom; and skill deficiencies may contribute to poor academic performance; and
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National PTA Resolution • WHEREAS, Typical “vision”
evaluations/screenings only test for a few of the necessary learning related visual skills (distance acuity, i.e. 20/20 eyesight, stereo vision, and muscle balance), leaving most visual skill deficiencies undiagnosed; and
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National PTA Resolution
• WHEREAS, Learning related vision problems, when accurately diagnosed, can be treated successfully and permanently; and
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National PTA Resolution • WHEREAS, Knowledge regarding the
relationship between poorly developed visual skills and poor academic performance is not widely held among students, parents, teachers, administrators and public health officials; now therefore be it
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National PTA Resolution
• RESOLVED, That the National PTA through its constituent organizations, provide information to educate members, educators, administrators, public health officials and the public at large about learning related visual problems and the need for more comprehensive visual skill tests in school vision screening programs performed by qualified and trained personnel; and be it further
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National PTA Resolution • RESOLVED, That the National PTA,
through its constituent organizations, urge schools to include in their vision screening programs tests for learning related visual skills necessary for success in the classroom.
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People at risk for learning-related vision problems
should receive a comprehensive optometric examination. It should be
conducted as part of a multi-disciplinary approach
in which all appropriate areas of function are
evaluated and managed. (FROM: Solan, HA, Press, LJ. Optometry and Learning Disabilities. J.
Optom Vision Dev 1989; 20:5-21)
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WHAT’S BEING DONE??
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LEGISLATION
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OHIO • Enacted HB 95 in 2003 • Began in 2004-2005 school years • Within 3 months after a student has
been identified with disabilities/under IEP process
• Requires student to undergo a comprehensive eye examination
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MISSOURI
• Passed April 2007/Started July 2008
• Requires children starting kindergarten or 1st grade to get a professional eye exam
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ILLINOIS • Passed October 2, 2007 • Bill introduced by the Illinois Federation
of Teachers • Requires professional eye exam prior to
entering school • Specifies minumum requirements for an
eye exam
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NATIONAL LEGISLATION
• Over 25 pieces of enacted legislation with regard to vision have passed between 2000-2010
• Kentucky (2000) – requires a comprehensive professional eye exam be completed prior to entering school
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NATIONAL LEGISLATION
• Has been slowed secondary to the National Health Care Reform
• A children’s vision piece was included in the most recent act passed. However, we don’t know what exactly that piece will look like yet – being worked on currently (might be overturned with the entire package)
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LETTER TO DEAR ABBY
(April 17, 2007)
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HOW ARE KIDS IDENTIFIED??
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COMPREHENSIVE OPTOMETRIC
EXAMINATION
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The Optometric Examination should include:
• Thorough Examination of the: -> Eye Health -> Visual Functioning Skills
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Optometric Intervention can…..
• Improve visual functioning • Alleviate associated signs and
symptoms
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Optometric Intervention May Include:
• Lenses (eyeglasses) • Prisms • Vision Therapy • (monitoring/recommendations for
adaptations)
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VISION THERAPY DOES NOT DIRECTLY
TREAT LEARNING DISABILITIES OR
DYSLEXIA!!!!!!!! (FROM: Hoffman, LG. The purpose and role of vision therapy.
J Optom Vision Dev 1988; 19:1-2 AND Getman, GN A commentary on vision training. J Learn Disabil 1985; 18:505-
12)
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Vision Therapy is a treatment to improve visual
efficiency and visual processing, thereby allowing
the person to be more responsive to educational
instruction (FROM: Solan, HA, Press, LJ. Optometry and learning disabilities. J.
Optom Vision Dev 1989; 20:5-21 AND Eden, GF, Stein, JF, Wood, MH, et.al. Verbal and visual problems in reading disability. J Learn Disabil.
1995; 28:272-290)
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VISION FUNCTION
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3 Interrelated Areas of Vision Function
• Visual Pathway Integrity • Visual Efficiency • Visual Information Processing
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Visual Pathway Integrity
• Eye Health Status • Visual Acuity • Refractive Status (myopia, hyperopia,
astigmatism)
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EYE HEALTH STATUS
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VISUAL ACUITY
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REFRACTIVE PROBLEMS
• MYOPIA • HYPEROPIA • ASTIGMATISM
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MYOPIA aka
NEARSIGHTEDNESS
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See On-Line Presentation for Video
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HYPEROPIA aka
FARSIGHTEDNESS
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See On-Line Presentation for Video
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ASTIGMATISM “football shape”
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See On-Line Presentation for Video
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Visual Efficiency
• Accommodation (focusing) • Binocular Vision (eye teaming) • Eye Movements (visual tracking)
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ACCOMMODATIVE PROBLEMS
(focusing difficulties)
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BINOCULAR VISION (Eye Teaming Difficulties)
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EYE MOVEMENT (Visual Tracking Skills)
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Henry looked to the right. He looked to the left. He looked up, and he looked
down. Where had the Frog gone? Henry did not like being alone in the forest. “Frog, where are you?”
Henry called. “Please come back!”
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Visual Information Processing
• Identification • Discrimination • Spatial Awareness • Integration with other senses (just to mention a few)
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VISUAL DISCRIMINATION
• Ability to determine exact characteristics and distinctive features
• In reading – distinguishing similarly spelled words – was/saw; then/when; on/no; run/ran
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VISUAL MEMORY • Ability to recognize and recall visually
presented information • In reading – comprehension; difficulty
remembering what a word looks like or fail to recognize the same word on another page; also takes longer to copy assignments – must frequently look back at the text
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LATERALITY/ DIRECTIONALITY
• Reversals – lack of visual spatial development or difficulties in visual form constancy
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VISUAL CLOSURE • Ability to visualize a complete
picture/idea when given incomplete information or a partial picture
• Helps with reading and comprehending quickly – may have difficulty completing a thought; confuse similar objects or words
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VISUAL FIGURE GROUND
• Perceive and locate forms or objects within a busy field without getting confused by the extra visual information
• Will become easily confused – affects concentration and attention; have difficulty scanning text to locate specific information
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VISUAL MOTOR INTEGRATION
• Eye-hand coordination/eye-body coordination
• May have poor handwriting and take longer to complete written assignments
• May have difficulty in such areas as sports, learning to ride a bike, or demonstrate general clumsiness
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Research has demonstrated that some people with
reading disabilities have deficits in the transmission of information to the brain through a defective visual
pathway. (FROM: Lhmkuhle S, Garzia RP, Turner L, et.al. A defective
visual pathway in children with reading disabilities. Eng J Med 1993; 328:989-996 AND Livingstone MS, Rosen GD, Drislane
FW, et.al. Physiological and anatomical evidence for a magnocellular defect in developmental dyslexia. Prac Natl
Acad Sci USA 1991; 88:794307947)
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(con’t)
This can create confusion and disrupts the normal visual timing functions in
reading (FROM: Lovegrove W, Martin G, Slaghuis W. A theoretical and
experimental case for a visual deficit in specific reading disability. Cogn Neuropsychol 1986; 3:225-267 AND
Beitmeyer BG. Sustained (P) and transient (M) channels in vision: a review and implications for reading. In: Willows DM,
Kruk RS, Corcos E (eds): Visual Processes in Reading and Reading Disabilities. Hillsdale: Lawrence Erlbaum; 1993:95-
110)
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THINGS TO LOOK FOR THAT COULD
INDICATE A VISUAL FUNCTIONING
PROBLEM
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I.E. WHEN TO CONSIDER
REFERRING FOR A PROFESSIONAL EYE
EXAMINATION
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REFERRAL • Child seems bright, but struggles
with reading • Fatigues quickly when reading with
frequent signs of frustration • Is unable to sit still; cannot stay on
task for any length of time
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REFERRAL • Frequently loses his/her place, skips
words or whole lines of text • Has poor reading comprehension • Has difficulty copying from the
board or a book • Has sloppy handwriting
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REFERRAL
• Medication or tutoring has not been successful in improving school performance
• Has been labeled LD, ADD, ADHD, or dyslexic
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REFERRAL
• Frequent rubbing of eyes, blinking or headaches
• Squinting, tilting head or covering one eye; eye turn noted
• Dislike or avoidance of close work • Blurred vision at any distance
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SUMMARY
• Vision problems can and often do interfere with learning
• People at risk for learning-related vision problems should be examined
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SUMMARY
• The goal of optometric intervention is to improve visual function and alleviate associated signs and symptoms
• Prompt remediation of learning-related vision problems enhances the ability of children to perform to their full potential
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SUMMARY • People with learning problems require
help from many disciplines to meet the learning challenges they face
• Optometric involvement constitutes one aspect of the multidiscplinary management approach required to prepare the individual for learning.
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WEBSITES FOR MORE INFORMATION
• www.aoa.org = American Optometric Association
• www.pavevision.org = Parents Active for Vision Education
• www.poaeyes.org = Pennsylvania Optometric Association
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WEBSITES FOR MORE INFORMATION
• www.allaboutvision.com • www.childrensvision.com • www.add-adhd.org • www.ldaamerica.org
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QUESTIONS ???? Marla L. Moon, O.D., F.A.A.O.
Nittany Eye Associates 428 Windmere Drive
State College, PA 16801 814-234-2015
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ADDITIONAL ITEMS
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SCHOOL VISION SCREENING
• PA Dept of Health – School Health Division
• Adopted new guidelines 2002 • Introduced for 2003-2004 • Standardizes Vision Screening
Process
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SCHOOL VISION SCREENING
• TESTS -> Far Visual Acuity -> Near Visual Acuity ** -> Plus Lens Test -> Color Vision Test -> Stereo/Depth Perception Test **
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SCHOOL VISION SCREENING
• “Vision Screening Tests for Students with Special Health Care Needs”
• Near Point of Convergence Test (extra – in appendix – G)
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InfantSEE ™