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TonoPen

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Refurbished Tonopen XL
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BAT

Brightness Acuity Test

a-scan sonomed 300aThe MARCO BAT Brightness Acuity Tester is a handheld
instrument designed for two major visual function
tests.
1) Brightness Acuity Test – Many people with cataracts and other ocular media opacities are visually disabled in bright light conditions from intraocular light scatter often referred to as glare. The BAT Brightness Acuity Tester provides objective measurements of functional visual acuity in three common bright light conditions while the is in the standard refracting lane

2) Macular Photostress Test – The BAT Brightness Acuity Tester produces a full hemispherical light source
to photostress the retina when maculopathy is suspected.

The BAT Brightness Acuity Tester can simulate three
bright light conditions:

- 1) High-direct overhead sunlight;

- 2) Medium-partly cloudy day;

- 3) Low-bright overhead commercial lighting.

The visual acuity measurements will be similar to those that would be measured in these three conditions using a standard eye chart ¹. The result is an assessment of functional visual acuity which can be obtained in the standard refracting lane.

BRIGHTNESS SETTINGS

HIGH (400 ft. lamberts*)
Equivalent to the patient being in direct overhead sunlight (10,000
ft. candles) and standing on a white concrete sidewalk or sandy
beach.
MEDIUM (100 ft. lamberts*)
Equivalent to the patient being in indirect sunlight (2500 ft. candles)
and standing on a white concrete sidewalk or sandy beach on
a cloudy day.
LOW (12 ft. lamberts*)
Equivalent to the patient being in bright overhead fluorescent
lighting (300 ft. candles) such as in a department store, plant assembly
line or classroom.

 


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Bat - Marco
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Are you done with the A-Scan Sonomed 100A? Go to S-Can page.

 

 

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Optivision2020, Inc.

3026 NW 79 AVE.
Miami, Florida 33122