The causes of macular edema are numerous and different causes may be inter-related. It is commonly associated with diabetes. Chronic or uncontrolled diabetes type 2 can affect peripheral blood vessels including those of the retina which may leak fluid, blood and occasionally fats into the retina causing it to swell.
Visual C++. Visual C++ is known as a native development language, as it talks directly to the hardware for the Windows Mobile device, with no intervening layers (unlike Visual C#, for example). Programming using C++ can be challenging, as it is not a trivial language to learn.
Choosing a programming language. Before we go any further, you should know about the programming languages that you can choose from when you develop Universal Windows Platform (UWP) apps. Although the walkthroughs in this article use C#, you can develop UWP apps using one or more programming languages (see Languages, tools and frameworks).