The Optomap allows for a more comfortable retinal exam. Panoramic 200 Retinal Image - Click for hi resolution image. The top image to the right compares the doctor's view of your eye through an undilated pupil with an instrument called a direct ophthalmoscope (inner ring).
Mobile device. A mobile device (or handheld computer) is a computing device small enough to hold and operate in the hand. Typically, the device has a either flatscreen display with a small numeric keypad or alphanumeric keyboard, or a touchscreen providing a virtual keyboard and buttons (icons) on-screen.
A mobile device is a small computing device , typically small enough to be handheld ( and hence also commonly known as a handheld computer or simply handheld ) , having a display screen with a miniature keyboard ( either alphabetic , numeric or alphanumeric ) and , in some models , a touchscreen which enables the user to use a  virtual keyboard  ...