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ENVISION II: NEAR MAGNIFICATION KIT


                     

 

ENVISION I DISTANCE MAGNIFICATION KIT PARTS

 

Name of Tool: The name of the assistive device kit is Envision II: Near Magnification Kit. The magnification devices shown are components of the kit. The kit also contains teacher and student resources that are not shown.

                                           

What It Does: The Envision II: Near Magnification Kit is a multi-disciplinary teaching program that includes age-appropriate curricula for training students to care for and use assistive near-magnification devices. The program encourages ophthalmologists, optometrists, school vision specialists, teachers, parents, and community advocates to work as a team and share information to motivate, encourage, support, and teach students with low vision. The purpose of the Envision II: Near Magnification Kit is to help students use vision more effectively to achieve educational goals and become self-sufficient in daily living and employment.

 

ENVISION I DISTANCE MAGNIFICATION KIT PARTS

Targeted Group: The Envision II: Near Magnification Kit is designed for students with low vision, who are of five years and above and are unable to see regular print materials.

                  

Near Magnification Device Basics: Near-Magnification is the process of enlarging something only in appearance, not in physical size. The correct focal distance is the distance between the lens and the object being viewed at the point where best focus is achieved. The working distance is the distance from the surface of the magnifier to the eye. Each of these distances can be adjusted until the optimal focal and working distances are achieved. The magnifiers in the Envision II: Near Magnification Kit are hand-held, near magnifiers. This means they should be used for close tasks, not to view objects in the distance such as street signs.

                     

The dome magnifiers are curved along the top much like a dome. These dome magnifiers are considered to be fixed-focus because the focal distance always remains the same because the lens rests on the reading material.  Because the dome magnifier rests flat on the page, the correct focal distance is easy to maintain. Only the working distance is adjusted, the distance between the lens and the eye. The dome magnifier captures the light and bends the light rays to enlarge the object that is being seen.

                     

The hand-held, variable-distance magnifiers are different than the dome magnifiers. They do not lie flat on a page. These magnifiers must be held in one s hand. The focal distance or focal point is achieved as the user moves the hand-held magnifier closer and farther away until the object is brought into focus. At times, using the hand-held variable-distance magnifier may become tiring; depending on the student s arm strength and stamina for holding the magnifier. However, the advantage of the hand-held, variable-distance magnifier is that it may be used with other corrective lenses and may be used discreetly.

                     

Diopter: In the world of magnification, a word that you should know is diopter (d+ÈäptYr). A diopter is a unit of measurement relative to the refractive power of a lens. It is the measurement used for to describe the power of most single lenses. A simple example is when an optometrist writes a prescription for glasses, the prescription is described in diopters. Each lens may have a separate diopter measurement because often one may have a different focusing power than the other. If the diopter measurement has a minus (-) sign before it, such -40.00; this means the patient is nearsighted, or has myopia, or the patient has difficulty seeing clearly things that are in the distance. If there is a plus (+) sign before the diopter measurement, such as +20.00, then the patient has farsightedness, or is hyperopic. This indicates the patient has difficulty seeing clearly things that are up close. The abbreviation for diopter is written as a single capital D. In general four diopters equal a 100% gain in magnification, therefore eight diopters would indicate a 2x magnifier.

Key Label Definitions: The near magnification devices included in the Envision II: Near Magnification Kit includes two fixed-focus dome magnifiers, one fixed-focus stand magnifier, and two hand-held, variable-distance magnifiers. The description of the magnifiers is as follows:

  • (upper right) Magna-Brite #LGM64, 4x Dome Magnifier: The Magna-Brite #LGM64, 4x Dome Magnifier is a fixed-focus, hand-held dome magnifier with a two and one-half inch flat base or sixty-four millimeters (64 mm) in diameter. It has four times (4x) the magnification power. 
  • (lower right) Eschenbach #1426, 1.8x Dome Magnifier: The Eschenbach #1426, 1.8x Dome Magnifier has an aspheric surface. It is hand-held and fixed-focus with a two-inch bottom flat surface. The dimension of the lens is sixty-five millimeters, by thirty-six millimeters, by forty-six millimeters (65 mm x 36 mm x 46 mm).
  • Eschenbach 7x Stand Magnifier flashlight style: The Eschenbach is a hand-held, fixed-focus magnifier. It is named stand magnifier because the magnification lens is held in place by a circular frame with a one and three-quarters inch plastic tube. The edge of the lens head rests flat on a sheet of paper. The lens head is not adjustable. The magnifier has an aspheric lens with seven (7) times magnification power. The lens is twenty-eight (28) diopters of magnification, with a thirty-five (35) millimeter (mm) lens diameter, and a sixty (60) mm focal distance. It has an on and off switch for bright light-emitting diode (LED) illumination.  
  • PowerMag+ Schweizer 9.75x/39D LED Magnifier: The PowerMag+ Schweizer 9.75x/39D LED Magnifier is a hand-held, variable-focus magnifier with an aspheric lens. It has nine point seventy-five (9.75x) magnification power, at thirty-nine diopters (39D).It has a thirty-five millimeter (35mm) lens diameter. It features an on and off switch for bright light-emitting diode (LED) illumination.
  • PowerMag + Schweizer 7x/24D LED Magnifier: The PowerMag + Schweizer 7x/24D LED Magnifier is a hand-held, variable-focus magnifier with an aspheric lens. It has seven (7x) magnification power and a twenty-four diopter (24D) lens, and with a fifty millimeter (50mm) diameter. It features an on and off switch for bright light-emitting diode (LED) illumination.  

Other Components: The Envision II: Near Magnification Kit has other components that are not displayed in the picture above. The components include teacher and student resources which are described as follows:

 

  • One (1) Envision I & II Consumables Pack: A consumable package of pre-printed forms used to recognize student accomplishments, inform parents of student progress, and notify low vision specialist of student progress. The consumable pack contains the following items:
    • Twenty (20) Informal Student Information Sheets (student/parent interview forms)
    • Ten (10) Certificates of Recognition (for learning to use the distance monocular devices)
    • Ten (10) Certificates of Recognition (for learning to use the near magnification devices)
    • Ten (10) Using Prescriptively Recommended Optical Devices, Distance Sheets (clinician report forms)
    • Ten (10) Using Prescriptively Recommended Optical Devices, Near Magnification Sheets (clinician report forms)
  • Two (2) Emmy, the Emu Puppets: The Emu Puppet is a hand puppet. It is made with soft, shaggy, and bright yellow cloth for the body. The puppet measures one foot long. The beak is made with soft, furry, bright orange cloth. The beak protrudes about 4 and ½ inches from the body for sufficient room to insert the hand inside the beak.  It is recommended to stuff the head with paper for best recognition of the puppet character. 
  • One (1) Washable Crayon Pack: The crayon pack includes sixteen (16) non-toxic washable color crayons in various colors.
  • One (1) Envision II Teacher s Manual for Ages 10 and Under: The teacher s manual provides background information, recommendations for meeting with low vision specialists, parents, and others involved in the education of the student. It also has lesson plans for use with students ten and younger to better optimize vision by use of magnification devices. 
  • One (1) Envision II Teacher s Manual for Ages 11 and Older: The teacher s manual provides background information, recommendations for meeting with low vision specialists, parents, and others involved in the education of the student. It also has lesson plans for use with students ten and younger to better ooptimize vision with the use of magnification devices.
  • One (1) Envision II Activities Binder for Ages 10 and Under: The student activity binders include basic-use exercise sheets with pictures, charts, maps and stories that are appropriate for students ten-years-old or younger. The exercises are designed to help students learn how to use the near magnification devices.
  • One (1) Envision II Activities Binder for Ages 11 and Over The student activity binders include basic-use exercise sheets, with pictures, charts, maps and stories that are age-appropriate for students ten-years-old or older. The exercises are designed to help students learn how to use the near magnification devices.
  • One (1) Comic Book (5-Pack). The package includes five (5) comics each with the same title, The Mystery of the Magnifiers. The purpose of the comic book is to engage the student in a fun exercise that uses all the skills he or she has learned.    
  • One (1) Envision Carry-Case: The carry-case is bright yellow and made of durable plastic with a dark foam interior that cradles and protects the devices.    
  • One (1) Lens Cleaning Cloth: The cleaning cloth is used to wipe and clean the magnifiers.
  • One (1) Contents List/Suggested Uses, Print: The list identifies what is included in the kit and where replacement items may be found.
  • One (1) Contents List/Suggested Uses, Braille: The list identifies what is included in the kit and where replacement items may be found.

                     

Features: The Envision II: Near Magnification Kit uses stories and activities about Emmy,  a teen-aged girl and her wacky brothers Ethan and Ernest. The stories and activities are used to teach students with low vision on how to use their vision more effectively with hand-held magnifiers. The activities featured below may be implemented by either special education teachers or general education teachers who happen to have a low vision student in the classroom. The lesson plans include:

                     

  • Exercises for students to learn how to use and care for near distance magnifiers
  • Practice activities that reinforce active use of near distance magnifiers
  • Activities to enrich and build upon skills that have been learned, and encourage self-learning    
  • Activities for learning how to use near distance magnifiers outside the classroom and to apply skills in real-life situations 
  • Short story comic books about the use of near distance magnifiers to encourage and motivate students to use near distance magnifiers  
  • Activities for advocacy to support and influence students with low vision to use near distance magnifiers in daily living
  • Forms to encourage clear communication and information sharing among ophthalmologists, optometrists, clinical low vision specialists, teachers, parents, and students 

Web Resources: To learn more about the Envision II Near Magnification Kit please visit the online links listed below:          

Base Cost: The base cost for the Envision II Near Magnification Kit is listed below:

                     

APH Product #

Item Description/Name

*Price

1-08552-00

ENVISION II: Near Magnification Array

$560.00

1-30016-DVD

ENVISION I: For Near Magnification Devices Video, DVD

$   10.00

1-03196-00

RollBuster II Mini-Backpack Bag Replacement

$      5.00

1-03197-00

RollBuster II Mini-Duffel Bag Replacement

$      5.00

61-320-019

ENVISION I and II: Emu Puppet Replacement

$    16.25

1-08551-01

ENVISION I and II: Consumable Materials Packet Replacement

$    20.00

5-08552-01

ENVISION II, Teacher's Instruction Manual, Braille, 10 and Younger

$    26.00

5-08552-02

ENVISION II, Teacher's Instruction Manual, Braille , 11 and Older

$    26.00

7-08552-01

ENVISION II, Teacher's Instruction Manual, Print , 10 and Younger

$    17.00

7-08552-02

ENVISION II, Teacher's Instruction Manual, Print , 11 and Older

$    17.00

7-08552-05

ENVISION II, Regular Print Comic Book, 5-Pack

$      9.00

7-08552-03

ENVISION II, Student Activity Binder, 10 and Younger

$    59.00

7-08552-04

ENVISION II, Student Activity Binder, 11 and Older

$    59.00

      *Prices based on the APH Instructional Products Catalog 2010-2011

                     

                     

The Envision II Near Magnification Kit is now available to order on the Instructional Materials Operating Distribution System (IMODS) Media Guide using funds available from the APH Federal Quota Program for your qualified legally blind students.

                     

To learn more about this program, you may access the APH online catalog at http://shop.aph.org/webapp/wcs/stores/servlet/Home_10001_11051 (Outside Source).

                     

If you would like to order a product from APH and it is not available on IMODS, please contact James Morrison, Staff Service Analyst by phone at 916-323-1329 or by e-mail at jmorrison@cde.ca.gov.

                     

If you have questions regarding information presented in this document, please contact Olga Cid, Education Programs Consultant by phone 916-319-0959 or by e-email at

ocid@cde.ca.gov.

 
Questions: Clearinghouse for Specialized Media and Translations | csmt@cde.ca.gov | 916-445-5103

California Department of Education
1430 N Street
Sacramento, CA 95814