Software: Apps on the move

Clinical Tools

Name: Amsler Grids

Price: Free

The poor sensitivity of the Amsler and the rise of the OCT will see the total demise of the technique as a means of screening for macular degeneration. However, as a means of patient-centred monitoring of macular vision, and for purposes of patient understanding, I think the test will survive. I have started using a free app version (from Konan) of the Amsler grid on domiciliary visits and find that it has some obvious benefits. Firstly, the touchscreen makes it easier for a patient to record their visual distortions and blind areas. Secondly, electronic storage is much better than paper and I fail to see any reason for using a paper version any more.

The Konan app has standard, reverse contrast, red, fixation cross, and small grid options as would be expected, and saved results are stored in images or could easily be transferred to a central resource if required and if secure (figures 1 to 5). The app could easily be used by a patient too.