Opening the iTunes Store.If iTunes doesn’t open, click the iTunes icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To download the free app ContrastChart by Nasanen, get iTunes now.

Do you already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC


By Nasanen

Open iTunes to buy and download apps.


Contrast Chart is an interactive number and letter contrast sensitivity test. With Contrast Chart, human visual contrast sensitivity can be evaluated quickly and easily.

Contrast sensitivity of the visual system refers to the ability to see low contrasts, i.e. small differences in brightness.

Good contrast sensitivity is particularly important in difficult viewing conditions, which can reduce the contrast of the scene. One may encounter such viewing conditions when driving in dense fog, heavy rain, in the glare of the lights of oncoming traffic at night, or in the glare of sunshine during the daytime, for example.

The app produces randomized sequences of number or letter images with decreasing contrast as shown in the screen shots. The number of possible character sequences is huge.

iPad Screenshots

iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4
View In iTunes
  • Free
  • Category: Medical
  • Released:
  • Version: 1.0
  • Size: 5.6 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 3.2 or later. Compatible with iPad.

Customer Ratings

0 0 0 We have not received enough ratings to display an average for the current version of this application.