Characteristics of CVI. Function of vision No one place in brain is responsible Organized in different places of the brain.

Slides:



Advertisements
Similar presentations
Writing constructed response items
Advertisements

ESI-P Early Screening Inventory-Preschool
Phase III CVI Part 4 More Ideas.
Individual Characteristics in Phase III Part 2 The information on each characteristic is derived from the CVI Resolution Chart -Roman-Lantzy, 2007.
Phase III CVI: What do I do now? Part 1
Intervention Ideas Based on Characteristics
Behavior.
Teaching Strategies Gold
Strategies for Supporting Young Children
Cortical Visual Impairment
GETTING STARTING! USING THE BDI-2 IN MA EI A General Overview to Administration.
Rationale To encourage all students to take a full part in the life of our school, college, workplace or wider community. To provide opportunities to enable.
APH Intervention Continuum of Communication Skills
SLEUTHING YOUR STUDENT’S COMPREHENSION Provincial Integration Support Program.
Visual Attention Attention is the ability to select objects of interest from the surrounding environment A reliable measure of attention is eye movement.
Functional Vision Assessment
Presented by MDE-LIO Cortical Visual Impairment Team April 24, 2015
Age Specific Care. Age-Specific Considerations for Pediatric Patients.
Psikologi Anak Pertemuan 3 Motor, Sensory, and Perceptual Development.
Chapter 6 Perception.
Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education.
Lisa R. Audet, Ph.D., CCC-SLP
THE INSITE MODEL A Model of Home Intervention for Infant, Toddler, and Preschool Aged Multihandicapped Sensory Impaired Children.
Final Review Session Neural Correlates of Visual Awareness Mirror Neurons
Recreational Therapy: An Introduction Chapter 6: Autism PowerPoint Slides.
CORTICAL VISUAL IMPAIRMENT (CVI) Group presentation Region 10 GROUP A (Lucy Davis, Monica Degrate, Nkeiruka Dike, Mindy Allen.
Assessment for ASD Programming November 2012IDEA Partnership1.
Supporting Children with Challenging Behaviors Refresher Training.
CORTICAL VISUAL IMPAIRMENT
Chapter 6 Perception.
Helping Families, Schools and Communities Understand Children With Autism Spectrum Disorder Teresa Boggs, M. S. CCC-SLP Director of Clinical Services.
Introduction to Vision Implications for the developing child.
PRESENTED BY THE MICHIGAN DEPARTMENT OF EDUCATION-LOW INCIDENCE OUTREACH CORTICAL VISUAL IMPAIRMENT MENTOR TEAM CHAESA MACWILLIAMS
SPED 537 ECSE Methods Multiple Disabilities Ch 6 Deborah Chen, Ph.D. California State University, Northridge March 27-28, 2006.
Speech and Language Issues For Babies and Pre-school age children who have Down Syndrome Ups and Downs Southwest Conference 2007.
Autism ShakeZ’ Lynch. What is autism? Autism spectrum disorder (ASD) and autism are both general terms for a group of complex disorders of brain development.
SPED 537 ECSE Methods: Multiple Disabilities Chapter 5 March 6-7, 2006 Deborah Chen, Ph.D California State University, Northridge.
©2014 Cengage Learning. All Rights Reserved. Chapter 7 Using Time Samples to Look at Attention Span “Teaching is not about transferring knowledge. It is.
VISUAL IMPAIRMENT.
SPED 537 ECSE Methods Multiple Disabilities Chapter 4 March 13-14, 2006 Deborah Chen, Ph.D. CSU, Northridge.
One Step at a Time: Presentation 6 LISTENING SKILLS Introduction Initial Screen Skills Checklist Classroom Intervention Lesson Planning Teaching Method.
SPED 537: ECSE Methods Multiple Disabilities May 8-9, 2006 Deborah Chen, Ph.D. California State University, Northridge.
Early Behaviours and What to Look For EARLY READING BEHAVIOURS…
CVI: Cerebral Visual Impairment Revision Issues So What?
An Introduction to Teaching Music to Children with Special Needs Ryan Hourigan Ph. D. Ball State University.
SPED 537 ECSE Methods Multiple Disabilities Deborah Chen, Ph.D California State University, Northridge March 20-21, 2006.
Cortical Visual Impairment: A Basic Understanding
VISUAL DEVELOPMENT VISUAL DEVELOPMENT.
Autism Quick Cooking for a Five Star Educator. Educators Choose to be Chefs or Cooks!
CVI and the IEP Teri Turgeon Education Director Community Programs Perkins School for the Blind.
CVI Symposium Ellen Cadigan Mazel M.Ed., CTVI Perkins School for the Blind May 2015.
BABY WATCH EARLY INTERVENTION VISION SCREENING TRAINING BABY WATCH EARLY INTERVENTION VISION SCREENING TRAINING Section IV. Section IV. Child Resists Eye.
Intellectual Development of the Infant
Career and Life Goals Planning. Start Early EXPANDED CORE: ASDVI  Engagement  Communication – expressive, receptive, nonverbal  Play, Social Skills.
Visual Impairment. Fatigue, time of day, and medications can cause fluctuating vision. A child may be able to do a task at one time of day, but not at.
By: Julie Kushman Dr. Christine Roman-Lantzy 2007 Stephanie Steffer MDE-LIO State CVI Team.
Services for Individuals with Autism Spectrum Disorder – Minnesota’s New Benefit Age and Disabilities Odyssey Conference June 17, 2013.
Understanding Children Birth to Age 2 (cont.). Cognitive Development Heredity and environment influence this the most. Heredity determines when a child’s.
Cortical Visual Impairment (CVI):
Presented by Cynthia White-Botello, Ms Ed ATOM 2016
ECC Portfolios: Using Project Based Learning to Teach the ECC
APH Intervention Continuum of Communication Skills
Cortical Visual Impairment (CVI)
Session 5: More Information About Determining a Rating
Minimally Responsive Child
Assessment of Communication
Becoming a Team to Build Understanding of CVI
Cortical Visual Impairment
Active Learning Implementation
The Student with CVI Determining Functional Vision
Presentation transcript:

Characteristics of CVI

Function of vision No one place in brain is responsible Organized in different places of the brain

FUNCTIONAL USE OF VISION: Using vision to complete an activity within daily life Not based on visual acuity Based on visual, individual and environmental characteristics.

What is CVI? CVI is a condition in which the eye works but the part of the brain which interprets the signals provided by the eye does not. This will cause the child to have difficulty using visual input he/she is receiving. CVI is not an indication of the childs cognitive ability.

Differences between Ocular and Cortical Visual Impairment CVI: child may see accurate visual image, but cant interpret it accurately Ocular: child has difficulty obtaining good visual image, but can process and interpret image accurately when enough information is present Some children have both (Levack, 1991)

Let s talk about CVI Child has difficulty using visual input he/she is receiving. CVI gets better or it gets worse. It can seem to vary from day to day. CVI is suspected when: Normal eye exam Brain injury Unique characteristics present

Presence of the unique CVI characteristics

Characteristics of CVI Early Resolution Light Gazing Visual Reflex Response (touch) Mid Resolution Color Latency Visual Novelty Visual Reflex Response (threat) Movement Later Resolution Visual Field Preference Visual Motor Complexity Target Array Complexity Distance Viewing

Light Gazing Staring at lights or light sources is often observed; may also be attentive to ceiling fans. May be difficult to redirect childs attention away from a light source. Sources of light should be positioned behind child. When lighted toys or objects are used the light should be used to accentuate or highlight the item. Toys which have light and music should not be used with children in this phase.

Light Gazing/Non Purposeful Gaze Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 May localize briefly but no prolonged fixations on objects or faces. Overly attentive to lights or possibly ceiling fans Less attracted to lights – can be redirected to other targets Light is no longer a distractor

Color: Items typically need to be a single color. May need to use childs preferred or favorite color. Once child is looking at a variety of single color items may need to use favorite, or preferred color, to initiate looking when child is tired or engaged in activities which may challenge other areas (i.e.: motor) at the same time.

Color Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Objects viewed are generally single color Has a favorite color Objects may have 2-3 colors More colors, familiar patterns regarded No color or pattern preference

Latency In Phase I it may take the child extended periods of time to demonstrate a visual response. Child may demonstrate a delay in using vision to look at a target most of the time when a new item is presented or a new activity starts. Allow the child multiple opportunities and extended periods of time to demonstrate a visual response. Latency may decrease as the child uses his/her vision more.

Latency Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Prolonged periods of visual latency Latency slightly decreases after periods of consistent viewing Latency present only when student is tired, stressed, or over stimulated Latency rarely present Latency resolved

VISUAL NOVELTY Children prefer familiar items over novel items. May ignore something that is novel. Very different from ocular impairments, in which something new will attract attention.

Visual Novelty Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Only favorite or known objects solicit visual attention May tolerate novel objects if they share characteris tics of familiar ones Use of known objects to initiate looking sequence Selection of objects less restricted, requires 1- 2 sessions of warm up time Selection of objects not restricted

Visual Reflexive Responses Visual Reflexive Response Response to Visual Threat

Visual Reflexive Responses Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 No blink in response to touch and/or visual threat Blinks in response to touch but response may be latent Blink response to touch consistently present. Visual threat response intermittently present Visual threat response consistently present (both near 90% resolved) Visual reflexes always present, resolved

MOVEMENT Objects viewed have movement or reflective property Way to jump- start visual system

Movement Movement may be needed to initiate and sustain visual attention, regardless of how brief. Objects which provide the appearance of movement can be used to initiate or sustain looking (i.e.: toys which have shiny or reflective properties such as mylar).

Movement Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Objects viewed generally have movement or reflective properties More consistent localization, brief fixations on movement & reflective materials Movement continues to be an important factor to initiate visual attention Moveme nt not required for attention at near Typical responses to moving targets

Visual Fields Preference Child generally shows a field dependency or preference. They have a place where there best use of vision is noted. Child will typically use peripheral vision. May briefly try to use his/her central vision. Child often appears to be looking through people or objects.

Visual Fields Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Distinct field dependency Shows visual field preference Field preferences decreasing with familiar inputs May alternate use of right and left visual fields Visual fields unrestricted

Visual Motor Visual targets need to be simple, non- complex, because it is probably too difficult at this point to use his/her vision and demonstrate a motor response (i.e.: reaching) in Phase I of resolution. In Phase I child typically does not use a visually guided reach.

Visual Motor Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Look & touch occur as separate functions. Large and/or moving targets Look & touch on smaller objects that are familiar, lighted, or reflective Visually guided reach with familiar objects or favorite color Look and touch occur in rapid sequence but not always together Look and touch consistently

Complexity Remember that visual complexity not only includes what the child is looking at (visual clutter), but any form of sensory input which is occurring. In phase I items need to be presented against a solid black background. When working on a childs vision in phase I the child needs a quiet environment to work and play in.

COMPLEXITY Complexity of target/object Complexity of array Complexity of sensory environment

Complexity of Target/Object

Complexity of Array

Complexity of Sensory Environment

My Mother in Three Rivers Stadium (Chris Roman)

Complexity Across Ranges Range 1-2 Responds only in strictly controlled environments. Range 3-4 Visually fixates when environment is controlled. Range 5-6 Student tolerates low levels of familiar background noise. Regards familiar faces when voice does not compete.

Complexity (cont.) Range 7-8 Competing auditory stimuli tolerated during periods of viewing - student may now maintain visual attention on music toys. Views simple books/symbols. Smiles at/regards familiar and new faces. Range 9-10 Only the most complex visual environments affect visual response. Views books or other 2-dimensional materials. Typical visual-social responses.

DISTANCE VIEWING Often problematic for children in early phases In Phase I child typically only responds within inches of his/her face. May be result of increased complexity of visual array

Distance Viewing Across Ranges Range 1-2 Range 3-4 Range 5-6 Range 7-8 Range 9-10 Visually attends in near space only Occasional visual attention on familiar, moving or large targets at 2- 3 feet Visual attention extends beyond near space, up to 4-6 feet Visual attention extends to 10 feet with targets that produce movement Visual attention extends beyond 20 feet Demon- strates memory of visual events

Progression of Resolution Early Resolution Light gazing, blink reflex Mid Resolution c olor, latency, novelty, visual threat, movement Later Resolution Field, visual motor, complexity, distance viewing

Assessment Framework Interview Observation Direct Evaluation/Interaction with Child

CVI Range CVI can be severe, moderate, or mild Phases (I, II & III) describe broad functioning levels Number ranges (0-10 scale used in assessment) describe specific levels of functioning Phases guide intervention strategy to support best visual functioning

Ranges 0 to 10 scale 0 = no functional vision 10 = typical visual functioning Correlation with phases is approximate Phase 10 to 3.5 score Phase 23.5 to 7.5 score Phase 37.5 to 10 score

Interventions Environmental engineering Based on individual child/student characteristics Support the best vision where the child is functioning NOW Learning to use vision Remove, decrease supports to environment as progresses through to resolution of CVI characteristics

Phases Phase 1 : building stable visual function Phase 2: integrating vision with function Phase 3: resolution of CVI characteristics

Phase I Students generally require: 1. Single color objects 2. Objects of preferred color 3. Objects that produce movement or are shiny 4. Objects presented against a simple background 5. Objects that are familiar -Roman-Lantzy, 2005

Phase 2 Students generally require: 1. Reduction of information when presented in 2 dimension Use occluders or window cards to eliminate excess detail Highlight or outline critical features of symbols or pictures **Students should be at least a 7 on the CVI Range before asking them to discriminate 2-D objects** -Roman-Lantzy, 2005

Phase 3 Students generally require: For complexity visual field considerations in highly novel and/or over-stimulating environments -Orientation (verbal & physical) to the setting -Assistance from an adult or peer -Possible use of a cane In the classroom help the student think about their thinking Focus on problem solving rather than specific strategies -Roman-Lantzy, 2005

CVI in Infancy First three years are most critical for permanent changes Early identification provides best opportunity to take advantage of brain plasticity Dont wait for medical diagnosis! Parents are best reporters about their children Expect improvements

Impact of Sensory Loss on Child Development

Always remember to watch for signs of stress and fatigue!! Facial grimaces Hand and/or finger extension, opening, and tension Light gazing and avoiding looking at anything Yawning and/or falling asleep Hiccupping High pitched vocalizations

Contact Information Annette Carey, Project Director (304) , Ruth Ann King, Project Coordinator (304) , Mentors Tammy Belt Cell: (304) , Jamie McBride Cell: (540) ,

Contact Information Continued Mentors continued: Bridget Bailey Cell (304) , Kathy Quesenberry Cell (304) , Partners: Jennifer Cook Cell Tina Foster Cell (304) ,

Contact Information Continued Partners Continued: Kyle Heeter Cell Anita Nesland Cell , Amie Cook Smith Cell ,