Contrast Sensitivity

Contrast Sensitivity Android app: Contrast Acuity Charts are used to test visual acuity and contrast sensitivity. Testing is done in a logarithmic progression. his method of visual acuity testing was based on the Early Treatment of Diabetic Retinopathy Study Distance Visual Acuity Chart.

Significant loss of contrast sensitivity is common among low vision patients. Advanced diabetic retinopathy, glaucoma, and neurological disease is strongly associated with significantly reduced contrast sensitivity.

Contrast refers to the darkness of the object compared to the lightness of the background. The highest quality print may have 85 to 95% contrast. A gray car approaching an intersection on a shaded street has approximately a 30% contrast, whereas a dark car on a sunny street may have approximately 80% contrast.

How to use.

Step 1:

You need to download Remote control application in another mobile device to communicate with this application

https://play.google.com/store/apps/details?id=com.future.contrastremote


Step 2:
Install this application and enter the basic information of patient and start the test.

Step 3:

Press the connect button either on remote control app or on this device (make sure Bluetooth is turned on both devices) make a connection between both devices by selecting the Bluetooth device name.

Step 4:

Ask the patient to visualize the images displayed on the screen to reply as the images turned towards left or right or straight or blank. Press B for blank or unable to see, up arrow for straight lines, left arrow for left angle lines, right arrow for right angle lines.

End of the test will produce the contrast sensitivity graph results of the patient with normal range reference.

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