NVDA is a comprehensive and efficient software solution aimed specifically at individuals that suffer from eyesight difficulties, in various forms. It is supposed to help them learn how to work with a computer with ease, while also providing them with access to countless online information sources previously unavailable to them.

NVDA (or NonVisual Desktop Access) is an open source project that is made accessible to almost all users, thanks to the many languages it supports, ranging from English, to Spanish, Japanese, Turkish, Russian, Italian, French and others. NVDA supports several synthetic voices, the default ones being eSpeak and Microsoft Speech API.

The program uses the synthesized voice as a means of communicating information, even providing support for Braille display via USB or bluetooth, if users own such a device, detecting it automatically and connecting to it in just moments.

Upon installation, NVDA can be launched in several ways, including the key combination CTRL + ALT + N. Immediately after, the application will begin to enunciate every action users make on their PC or read any text they place their cursor over, be it from a document, an Internet page or a button. It will detail open menus and inform users when switching windows.

Since NVDA keyboard commands require that users press a particular key, called the NDVA modifier key. The default configuration features the numpad Insert, Extended Insert and Caps Lock for this specific purpose. It can also be run on touch devices, such as Windows-running tablets as it responds to numerous mouse or finger movements, such as taps or flicks, enabling users to perform a variety of activities with ease.

To conclude, NVDA is a complex and very helpful application that is meant to assist visually-impaired people in operating a computer, by reading any text a non-impaired person would and help them execute tasks on their PC.