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.
C++. C++ is one of the most powerful languages in the world. There is an endless list of software that can be written on it: Adobe Photoshop*, Illustrator*, Windows OS*, and other Microsoft products like Office*, Visual Studio, and Internet Explorer*, as well as Mozilla Firefox* and some OS X parts.