Snellen

Early treatment of children with bilateral amblyopia essential, according to multisite study

...ty- and university-based sites. After one year, visual acuity measured with both eyes open had improved an average of about 4 lines on the traditional snellen eye chart. Average visual acuity improved from 20/63 to 20/25, and most children (74%) reached 20/25 or better. Those children who started with visual...

Snellen in Medical Products

Standard Snellen Chart

Description: The Snellen chart is the default optotype with the standard order of letters (T Z V E C L) as default. When the Refresh 'R' button is pressed, the letters ( or pictures ) are replaced with a random set....
Company:Visionscience Software

Graham Field 10' Reversed Snellen Eye Chart

Description: Graham Field 10' Reversed Snellen Eye Chart....
Company:Lombart

Retinal Acuity Meter, RAM

Description:...ution. Multiple pinholes allow the patient to select the clearest view through the cloudy media. The letters at 40 cm subtend the same visual angle as snellen letters at 20 feet. The bright illumination more than compensates for the reduced illumination by the small aperture pinhole and the media opacity. ...
Company:AMA Optics, Inc.

Retinal Acuity Meter, RAM®

Description:...ion. Multiple pinholes allow the patient to select the clearest view through the cloudy media. The letters at 40 cm subtend the same visual angle as snellen letters at 20 feet. The bright illumination more than compensates for the reduced illumination by the small aperture pinhole and the media opacity. ...
Company:AMA Optics, Inc.

CP-690E Automated Projector

Description:...cess gives you the option of performing an examination by randomly selecting the charts you want during a refraction. The 33 charts include eight snellen charts, four illiterate E's, five numbers, three for children, and 13 for special purposes. To eliminate patient memorization, The CP-690E contains se...
Company:Marco Ophthalmic, Inc.

AOA Near PT Acuity Card - BCAOA

Description:... Card has Jaeger rating and snellen equivalent....
Company:Bernell

Near Point Diagnostic Card Set - BC11982

Description:... It has the near point, snellen X-CYL Jaeger & SMD cards in one set....
Company:Bernell

Eger NP Card

Description:...xaminer a starting point to determine acuity. The Eger card is printed with black ink on yellow styrene for increased contrast. It features sizes from snellen 20/1000 to 20/20. Other notations include Jaeger, M notation, lower case point size, size in mm, visual angle and print equivalents. Card size is 3 1/...
Company:Richmond Products, Inc.

Snellen charts

Description:... The snellen chart remains to most popular chart design among clinicians. A range of different optotypes can be displayed in snellen format including British, sheridan-gardner, landolt Cs, tumbling Es and kay...
Company:Thomson Software Solutions

PAM

Description:... Quantitative measurement of macular health. snellen charts available (Snellen letters 20/400 to 20/20). Easy to mount on most slit lamps. Simple testing performed in a few minutes. Rapid vision screenin...
Company:Marco Ophthalmic, Inc.

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Snellen in Medical Dictionary

Visual acuity test

... Typical snellen chart used for visual acuity testing . ...... Sharpness of vision, especially as tested with a snellen chart. ... Visual acuity is a subjective test...ecial considerations, normal ... Definition: A snellen test uses a chart with different sizes of letter...

Snellen in Biological Definition

Eye

...ription Macropsia Micropsia Nictating membrane Ocular tremor Optometry Ophthalmology Persistence of vision Saccade snellen chart Staring contest Tears Visual acuity Visual perception External links Evolution of the Eye Diagram of the eye ...