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VisionC (Visual Acuity & Contrast Sensitivity Chart)

App for measuring the Visual Acuity and Contrast Sensitivity with dynamic Charts at multiple distances (Normal or Low Vision Patients)

App for measuring the Visual Acuity and Contrast Sensitivity with dynamic Charts at multiple distances (Normal or Low Vision Patients)

VisionC (Visual Acuity & Contrast Sensitivity Chart)

by Manuel Rodriguez Vallejo
VisionC (Visual Acuity & Contrast Sensitivity Chart)
VisionC (Visual Acuity & Contrast Sensitivity Chart)
VisionC (Visual Acuity & Contrast Sensitivity Chart)

What is it about?

App for measuring the Visual Acuity and Contrast Sensitivity with dynamic Charts at multiple distances (Normal or Low Vision Patients)

VisionC (Visual Acuity & Contrast Sensitivity Chart)

App Details

Version
1.0.1
Rating
NA
Size
24Mb
Genre
Medical Health & Fitness
Last updated
June 1, 2016
Release date
October 12, 2015
More info

App Screenshots

VisionC (Visual Acuity & Contrast Sensitivity Chart) screenshot-0
VisionC (Visual Acuity & Contrast Sensitivity Chart) screenshot-1
VisionC (Visual Acuity & Contrast Sensitivity Chart) screenshot-2
VisionC (Visual Acuity & Contrast Sensitivity Chart) screenshot-3
VisionC (Visual Acuity & Contrast Sensitivity Chart) screenshot-4

App Store Description

App for measuring the Visual Acuity and Contrast Sensitivity with dynamic Charts at multiple distances (Normal or Low Vision Patients)

Normal Vision

1.- ETDRS Charts for presenting at 0.40, 0.67, 0.80, 3 and 4 meters.
2.- 3 Different packages of letters for avoiding memorization.
3.- Contrast Variation from 0 to -2.3 log units in -0.1 log unit steps for measuring visual acuity 4.- at different conditions of contrast.
5.- Isolated Crowded Sloan letters for measuring poorer visual acuity values than the limited 6.- for the screen size in an ETDRS chart.
7.- Contrast Variation from 0 to -2.3 log units in -0.1 log unit steps for measuring contrast at a fixed value of visual acuity.

Low Vision

1.- ETDRS Chart for presenting at 1 meter. From 0.2 to 1.1 logMAR [20/32 to 20/253]
2.- Contrast Variation from 0 to -1.9 log units in -0.1 log unit steps for measuring visual acuity 3.- at different conditions of contrast.
4.- Isolated Crowded Sloan letters for measuring poorer visual acuity values than the limited for the screen size in an ETDRS chart. Up to 1.6 logMAR [20/800]

Special Technical Issues

1.- These issues makes the app the most proffesional in terms of personalization to maximize reliability.
2.- Tablet's pixels per inch. The dots per inch (dpi) from your device is automatically recovered from the device and displayed in the screen.
3.- Gamma correction. Optimize the contrast of the letters in your device by means of inserting your own calibration data.

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