Vision Test Chart

A Logmar chart or Bailey-Lovie chart or ETDRS chart (Early Treatment Diabetic Retinopathy Study) comprises rows of letters and is used by ophthalmologists, optometrists and vision scientists to estimate visual acuity.

• Production Capacity: 20

An eye chart is a chart used to measure visual acuity. Eye charts are often used by health care professionals, such as optometrists, physicians or nurses, to screen persons for vision impairment. Ophthalmologists, physicians who specialize in the eye, also use eye charts to monitor the visual acuity of their patients in response to various therapies such as medications or surgery Optometric Eye Chart.

The Snellen eye chart is the familiar chart with the big letter or symbol at the top and progressively smaller letters at the bottom of the chart down to 20/20 or better. This is a chart for measuring visual acuity at a distance - in other words, how well you can see things that are far away. Non-reflective matte finish · 20' distance · 22" x 11"

Hess Chart (position)   The basic principle of Hess chart is foveal projection therefore the higher field belongs to the higher eye.  This is opposite of diplopia charting where the higher image is of the lower eye.  Position of the central dot indicates whether the deviation is in primary position or not.

• Production Capacity: 20

A contrast sensitivity test measures your ability to distinguish between finer and finer increments of light versus dark (contrast). This differs from common visual acuity testing in a routine eye exam, which measures your ability to recognize smaller and smaller letters on a standard eye chart.

• Item Code: ASF-28
• Production Capacity: 50
• Delivery Time: Within 2 days

The normal Snellen chart is printed with eleven lines of block letters. A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific eye.

In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc.

• Production Capacity: 5000

he Logmar Chart 2 Revised incorporates a slight change in the difficulty score for each of the ten Sloan letters derived from the best visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per line, the three charts are balanced so that in each chart the ten letters are represented at least once in every position. 

• Production Capacity: 100

The Teller Acuity Cards II can rapidly and reliably test visual acuity in infants and nonverbal patients, using preferential looking. Cards are digitally printed to increase accuracy and laminated to enhance durability.

• Production Capacity: 100

Features:

• Suitable for testing very small children (2 1/2 to 5) as well as adults
• TNO sterotest contains seven red/green test plates, presented in book form.
• In conjuction with red/green spectacles, the first three plates are used for screening.
• The quantitive plates (V - VI) enable stereoacuity between 480 and 60 seconds of arc.
• When used for screening purposes, Plate V should be used as a pass-fail criterion. Various studies (see references)
• indicate that at the level of 240 sec. of arc at least 95% of
• the amblyopes are unable to see the test figures.
• Kit includes seven plates and red/green glasses.

• Item Code: ASF-PTS85
• Production Capacity: 50

featured on this HOTV vision test are both a red and a green stripe. Visual acuity range 20 / 100 to 20 / 16. These stripes can help as a screener for Color Vision. Distance eye chart for vision testing at 10 Feet.

• Production Capacity: 100

LED vision chart. This is Led vision chart with 3 languages that is 'English', Numaric and 'C'. This is languages will help in vision. This is of best quality, Professionally manufacture. There is LED fitted at boundary. This is come with charger.

• Come with main languages that is 'English','hindi','Punjabi','Urdu'
• LED fitted at the boundary
• Professionally manufacture
• Best quality as export quality
• Good Brightness Of Chart.

• Production Capacity: 50

Measurement of visual acuity using illiterate E-chart and Times Roman reading types.

• Ergonomic Design: Buttons and charging holes at the bottom which makes operation easier.
• Appearance: One-handhold body size, black color and plastic material.
• Power: Being thinner and more exquisite by using Li battery.
• Charging: Replaceable plug, able to charge both on socket and computer.

The offered chart is manufactured utilizing superior quality raw material and latest technology. Moreover, a team of our quality controllers conducts a series of quality tests on the entire range to seek out any possible defect. In tune with industry standard, we provide the entire range in various customized options and industry leading prices.

Other Details:

• Full HD - High resolution test images available in English+10 optional languages (Arabic, Bengali, Gujarati, Kannada, Hindi,Malayalam, Oriya, Punjabi, Tamil,Telugu and Urdu).
• Exclusive education charts with amazing Image Gallery For Various Eye Diseases.
• Standard Tests: Snellen, Logmar, Ishihara, Maddox, Worth Four Dots, Astigmatism, Contrast Sensitivity, Duo-Chrome, Phoria and Optotypes: Sloan Letters, Numbers, Tumbling E, Landolt Rings, Figures For Children

LED vision chart. This is Led vision chart with languages that is ''English'' and ''C''. This is languages will help in vision. This is of best quality, Professionally manufacture. There is LED fitted at boundary. This is come with charger.

• Come with main languages that is ''English'',''hindi'',''Punjabi'',''Urdu''
• LED fitted at the boundary
• Professionally manufacture
• Best quality as export quality
• Good Brightness Of Chart.

• Production Capacity: 20

Details:

• Full HD - High resolution test images available in English+10 optional languages (Arabic, Bengali, Gujarati, Kannada, Hindi,Malayalam, Oriya, Punjabi, Tamil,Telugu and Urdu).
• Exclusive education charts with amazing Image Gallery For Various Eye Diseases.
• Standard Tests: Snellen, Logmar, Ishihara, Maddox, Worth Four Dots, Astigmatism, Contrast Sensitivity, Duo-Chrome, Phoria and Optotypes: Sloan Letters, Numbers, Tumbling E, Landolt Rings, Figures For Children.

Details:

• Full HD - High resolution test images available in English+10 optional languages (Arabic, Bengali, Gujarati, Kannada, Hindi,Malayalam, Oriya, Punjabi, Tamil,Telugu and Urdu).
• Exclusive education charts with amazing Image Gallery For Various Eye Diseases.
• Standard Tests: Snellen, Logmar, Ishihara, Maddox, Worth Four Dots, Astigmatism, Contrast Sensitivity, Duo-Chrome, Phoria and Optotypes: Sloan Letters, Numbers, Tumbling E, Landolt Rings, Figures For Children.

A.S.F UNIVERSAL
Led Vision Chart is a complete digital visual acuity system that includes our latest software suite the state-of-the-art visual acuity testing program. Available as a complete All-In-One digital acuity chart system the unit offers Low power consumption, monitor flexibility, fast, sharp and concise graphics. Additionally it is exceptionally easy to use and customize.

LIST OF CHARTS

> Amster Grid
> Astigmatism Test
> Cross Cylinder Test
> Fixation
> GreyScale
> Color Blindness
> Masking
> Red/Green
> Worth 4 Dots
> Dots Charts
> Alphabets
> Educational Charts
> Contact Lenses
> Optical Lenses
> Logmar Chart
> Aniseikonia Test
> Constrast Sensitivity
> Duochrome
> Horizontal
> Vertical
> Ishihara 24 Plates
> Peripheral Acuity
> Verner
> Black
> I 0 Regional Languages
> Hindi
> Numeric
> Tumbling E
> Pediatric Chart

TECHNICAL SPECIFICATIONS
Displayable Resolution: WXGA, 1366 x 768 max. Vertical Frequency. 60Hz max
Pixel Dimension: 0.3 x 0 3 mm
Color gamut: 72% of NTSC (CIE1931)
Color Depth: 16.7 Million
Contrast Ratio: 600:1 (typical)
Viewing Angle: 90 (Horizontal) typical, 65 (Vertical) typical Response Time: 5 ms typical (white to black, black to white)
Active Display Area: 409.8 x 230.4 mm
Tilt -5-15 (+2)
Dimension (with stand)
Height 34 2 cm (13.46 inches)
Width 43 8 cm (17 24 inches)
Depth 14 7 cm (5 78 inches)
Power Input Voltage AC100-240 V

A.S.F UNIVERSAL Distance vision chart in 3 meter & 6 meter for camp and clinical use.

• Item Code: ASF63CHART
• Production Capacity: 100000
• Delivery Time: SAME DAY