Nokia has released ‘Pocket Magnifier’, an app that lets you use your Lumia smartphone as a magnifying glass. It uses your smartphone’s camera to magnify text (or anything else) and makes it easier to read small text by zooming and applying different filters. In addition, the camera LED (flashlight) can be used as a reading light.
You can better experience with Nokia Pocket Magnifier by freezing viewfinder, so you do not need to keep the smartphone continuously over the text for reading. Also, you can view saved images in a gallery.
The application is intended primarily for people with poor eyesight and was developed in collaboration with Royal National Institute of Blind people (RNIB).