Complete Low Vision Package

LEA Symbols 15 Line Translucent ETDRS-Style Distance Chart Features: 

• Proportionally spaced (logMAR); line sizes range from 10/100 to 10/4 (3/30 to 3/1.2) equivalent. 
• Other equivalents are letter size, 20 foot, 6 meter, decimal, and LogMAR. 
• Distance visual acuity chart for an ETDRS Illuminator Cabinet. 
• Includes: Response key and instructions
• Dimensions: 24.5 " x 25.5" (62 cm x 65 cm)
• Testing Distance: 10 feet/ 3 meters

The Single Symbol Book is ideal for testing children and adults who have difficulties in the perception of symbols in lines. 

Features:

• Helps determine the best resolution of the visual pathway in a child/adult with amblyopia or impaired vision.
• Single optotype line sizes from 20/200 to 20/8 (6/60 to 6/2.4) equivalent. 

Benefits: The visual acuity values measured with single symbols are often several lines better than the line acuity values in persons with impaired vision and thus overestimate the quality of visual functioning. 

2508 Lea Card With Cord Features: 

• Proportionally-spaced lines on one side and more tightly-spaced symbols on the opposite side.
• Line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent.
• The attached 16-inch (40cm) cord ensures proper testing distance.
• The response key is printed on the test card.
• Includes flash cards and instructions. 8" x 10" (20.3 cm x 25.4 cm).
• Testing distance: 16 inches, 40 cm 

Pocket Lea Card (#2509) Features: 

• Designed for testing patients' visual acuity during rounds and in similar situations with a need for quick testing.
• Proportionally spaced (logMAR) lines on one side and tightly crowded lines (50% spacing) on the reverse side
• Line sizes from 20/400 to 20/10 (6/120 to 6/3) equivalent, 0.05 to 2.00.
• 3.75" x 6.25" (9.5 cm x 15.9 cm).

LEA Symbols Low Contrast Test 10M Features: 

• Test for quickly measuring low contrast visual acuity at 25%, 10%, 5%, 2.5%, and 1.25% contrast by measuring the distance at which the symbols are seen. 
• 10M symbols correspond to visual acutiy 0.10 at 1 meter, 0.05 at 0.5 meters, and 0.03 at 0.3 meters- makes VA values asy to calculate.
• Includes a table for conversion to Snellen equivalent VA values. 
• Includes a response key and 5 pages. 
• Dimensions: 3.25" x 9" (8.25 cm x 22.9 cm)

LEA 3-D Puzzle Features: 

• Designed to support the development of the concept of "same", first with colors, then with black and whiteconcrete forms that are prerequisites for the measurement of recognition acutiy with LEA Symbols tests at an early age. 
• During play, you can also observe hand-eye coordination and awareness of direction which are often problems for children with brain damage, even mild brain damage. 
• Includes the booklet: Assessing Vision Development Through Picture and Shapes and instructions. 
• Dimensions: Tray 6.75 " x 6.75" (17.2 cm x 17.2 cm) 
• Dimensions: Symbol puzzle pieces 2" x 2" (5.1 cm x 5.1 cm)

LEA Gratings A Preferential Looking Test Features: 

• Designed for preferenial looking test situations with infants or children and adults with disabilities to determine detection acuity. 
• Grating levels printed on each handle are: 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0 cpcm (cycles per centimeter of surface)
• Includes instructions, storage case, and 4 paddles. 
• Dimensions: 7.75" x 12.5" (19.685 cm x 31.75 cm)

Visual communication is the most important communication method during the first year of life. The ability to detect objects of low contrast is an important component of the visual system. For example, facial expressions are mediated by faint shadows and changes in the contours of the mouth and eyes. Determining the levels of contrast that an infant can detect helps provide baseline data for evaluating future changes. For example, deviations from usual behavior may indicate disorders that leave vision at high contrast levels unaffected. Instructions are included.

Hiding Heidi Low Contrast Face Test Features: 

• Single sidedcards- includes seven cards printed on one side in contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%. 

LEA Symbols Cards 40M and 60M Features: 

• Used for presentation as single optotypes or arranged in a row as a line test. 
• When cards are next to each other, the space between the symbols is equal to the width of the symbols. 
• To determine visual acutiy, use the following formula: "VA = Viewing distance used (meters) / M-value"
• Dimensions: 60M cards- 8.6" x 8.6" (21.9 cm x 21.9 cm) 40M cards- 6" x 6" (15.25 cm x 16.25 cm)

LEA Symbols Chart Features: 

• Designed for testing chiledren and adults with visual impairment at a distance of one meter. 
• Largest symbols are 50M in size, corresponding to 1m/50M = to 1/50 or decimal visual acuity 0.02, equivalent values 20/1000, 6/300. 
• Smallest symbols are 1M in size, corresponding to 1m/1M = to 1/1 or decimal visual acuity 1.00, equivalent values 20/20, 6/6. 
• Designed courtesy of August Colenbrander, MD. 
• Dimensions: 16" x 21.5" (40.7 cm x 54.6 cm)
• Folds: 16" x 10.75" (40.7 c, x 27.3 cm)
• Testing Distance: 40"/1 Meter

LEA Numbers Low Contrast Test 10M Features: 

• Measures, records, and detects changes in the trasnfer of visual information when the change only affects visual acuity at low contrast levels. 
• Presents contrast levels of 25%, 10%, 5%, 2.5%, and 1.25%.
• Each chart has 5 offset pages for easy flipping. 
• Recording forms and instructions are included
• Dimensions: 9" x 3.25" (22.9 cm x 8.25 cm)

LEA Numbers 15 Line Distance Charts Features:

• Designed for vision screening at schools and assessing vision in children with special needs beginning with 5 years of age.
• Proportioning spaced lines that range from 10/100 to 10/4 (3/30 to 3/1.2) equivalence. 
• Includes a hold to hang on wall
• Dimensions: 18" x 20" (45.7 cm x 50.8 cm)
• Folds to 18" x 10" (45.7 cm x 25.4 cm)
• Testing Distance: 10 feet/ 3 meters

LEA Numbers Chart Features:

• Designed for testing chiledren and adults with visual impairment at a distance of one meter. 
• Largest symbols are 50M in size, corresponding to 1m/50M = to 1/50 or decimal visual acuity 0.02, equivalent values 20/1000, 6/300. 
• Smallest symbols are 1M in size, corresponding to 1m/1M = to 1/1 or decimal visual acuity 1.00, equivalent values 20/20, 6/6. 
• Designed courtesy of August Colenbrander, MD. 
• Dimensions: 16" x 21.5" (40.7 cm x 54.6 cm)
• Folds: 16" x 10.75" (40.7 c, x 27.3 cm)
• Testing Distance: 40"/1 Meter

LEA Numbers Cards 40M and 60M Features: 

• Used for presentation as single optotypes or arranged in a row as a line test. 
• When cards are next to each other, the space between the numbers is equal to the width of the symbols. 
• To determine visual acutiy, use the following formula: "VA = Viewing distance used (meters) / M-value"
• Dimensions: 60M cards- 6" x 9" (15.25 cm x 22.9 cm) 40M cards- 4" x 6" (10.2 cm x 15.25 cm)
• Testing Distance: 40"/1 Meter

LEA Numbers Vision Rehabilitation Training Paddles Features: 

• Helpful in training a patient to use a telescope or to evaluate or train a patient in the use of eccentric viewing, but use their use is certainly not limited to these applications.
• Paddles have targets like single numbers or "optotypes," as one would find on a visual acuity chart.
• Paddles have handles that make them easy to move and reverse, changing the side that is visual to the patient. 
• Set consists of six paddles, a pair for each of the three sizes of optotype. For each pair, one of the paddles is blank on one side.
• The optotypes are LEA Numbers and the sizes are printed on the paddles: 200 feet (60 meters), 80 feet (24 meters), and 32 feet (9.5 meters). These distances in feet or meters represent how far away you would need to hold the paddles for a person with 20/20 (6/6) vision to be barely able to identify the optotype. 

ETDRS Original Series Chart R Features:

• Original series EDTRS eye chart with proportionally spaced (geometric progression) lines. 
• Line sizes range from 13/131 to 13/6.5 (4/40 tpo 4/2) equivalent. 
• Other equivalents featured on this chart are letter size, 20 foot, 6 meter, declimal, logMAR. 
• Features standardized format used in National Eye Institute clinical studies and in low vision evaluations that require accurate and repeatable visual acuity measurements. 
• Printed on 0.1 thick styrene plastic making the chart more rigid.
• Dimensions: 24.5" x 25.5" (62 cm x 65 cm)
• Testing Distance: 13 feet/ 4 meters

ETDRS Original Series Chart 1 Features:

• Proportionally spaced (geometric progression) lines with line sizes ranging from 13/131 to 13/16.5 (4/40 to 4/2) equivalent. 
• Other equivalents featured on this chart are letter size, 20 foot, 6 meter, decimal, and logMAR.
• Original series ETDRS vision chart that can be displayed in ESV3000 or ESC2000 light boxes. 
• Standardized format used in National Eye Institute clinical studies and in low vision evaluations that require accurate and repeatable visual acuity measurements. 
• Printed on 0.1 thick styrene plastic making the chart more rigid. 
• Dimensions: 24.5" x 25.5" (62 cm x 65 cm)
• Testing Distance: 13 feet/ 4 meters

LEA SYMBOLS Pocket Box Stick Features: 

• The LEA SYMBOLS Pocket Box Stick shows 20/125, 20/100, 20/80, 20/60, 20/50, 20/40, 20/30, and 20/20 lines.
• Each stick is 9/16" (1.4 cm) square and 4.5" (11.5 cm) long with fixation targets on each end.
• Testing distance: 16 inch, 40 cm 

LEA Symbols Low Vision Book Features: 

• Top bound low vision book with LEA Symbols pediatric optotypes 
• Designed for testing severely visually impaired children and adults. 
• Distance testing line sizes range from 20/1600 to 20/16 equivalent.
• Near vision testing line sizes range from 20/800 to 20/16 equivalent. 
• Testing Distance: 10 feet (3 Meters), 5 feet (1.5 meters), and 16" (40 cm).
• Includes: Booklet, slip-up occluders glasses for children, and metal frame occulder glasses

Low Vision Chart Stand Features: 

• Provide a convenient way to display LEA Numbers and Symbols Low Vision Charts (bound from the top). 
• No more propping the charts up on a chair- changing out from Numbers to Symbols is easy and quick.
• 10" (27 cm) base and takes the top of the chart from 48" to 76" (123 cm to 194 cm).

Sloan Letter near vision card with Proportionally-spaced lines; line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent. Attached 16-inch (40 cm) measuring cord ensures proper screening distance. Printed on two sides. 7" x 9" (17.8 cm x 22.9 cm). 

Sloan Letter Low Contrast Flip Chart Features: 

• Easily measure, record, and detect changes in the trasnbfer of visual information when the changes affect only visual acuity at low contrast levels. 
• Charts include the following contrast levels: 25%, 10%, 5%, 2.5%, and 1.25%.
• 5 offset pages for easy flipping- each chart includes recording forms and instructions. 
• Dimensions: 3.25" x 9" (8.25 cm x 22.9 cm)

Runge Sloan Letter Low Vision Card with line sizes ranging from 20/1000 to 20/16 (equivalent). Near acuity measurements and their equivalents are listed on the reverse side. 

Features:

• Easy-to-Use Low Vision assessment card
• Developed to mimic reading from left to right.
• Printed answers on the back of the card allow the tester to follow the patient's testing results.
• The back includes notations in Snellen, meters, decimal, logMAR, font size, Jaegar, and M unit notations.
• A ruler and pupil gauge are also printed on the back of the Low vision card.

Low Vision English Reading Card Features: 

• Contains continuous text with line sizes ranging from 20/320 to 20/16 (6/95 to 6/4.8) equivalent. 
• Contains letter size, decimal, logMAR, and M size notations. 
• Card comes attached with a 16"/40 cm measuring cord. 
• Dimensions: 15" x 10" (25.5 cm x 38.5 cm)

Spanish Low Vision Continuous Reading Card Features: 

• Provides reading examples at 20/400, 20/320, 20/250, 20/200, 20/160, 20/125, 20/100, 20/80, 20/63, 20/50, and 20/40 equivalent. 
• Designed so that it can be used successfully with a modest proficiency in the Spanish Language. 
• Notations are in Snellen in Foot and Meters, LogMAR, Jaegar, Letter Size, and Decimal.
• Measuring cord to easily ensure proper testing distance. 
• Dimensions: 8.5" x 13" (21.6 cm x 33 cm)
• Testing Distance: 16"/ 40 cm

Designed as a rapid test for checking the current prescription and accuracy of the add to be prescribed. The Pocket Card contains words on one side and numbers on the reverse. Line increments in logMAR units in Snellen equivalent. Acuity range 8.0M to .4M (20/400 to 20/20). 

ESC2000 Illuminated ETDRS Clinical Trial Cabinet Features: 

• Provides a uniform retro-illuminatated testing surface, ideal for clinical testing of high contrast and low contrast logMAR tests including ETDRS, LEA Symbols, LEA Numbers, E and C Charts.
• Cabinet utilizes a pure-white LED light source. 
• Provides low cost maintenance and usage- LEDs have a 50,000 hour longesvity. 
• Convenient storage cabinet for the safekeeping of additional charts when not in use. 
• 3 present luminance levels at 3, 85, and 160 cd/m^2
• Remote control included
• Dimensions: 24.75" x 25.625" x 3.0" (62.86 cm x 65.09 cm x 7.62 cm)