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).
Medical devices are classified into Class I, II, and III. Regulatory control increases from Class I to Class III. The device classification regulation defines the regulatory requirements for a general device type. Most Class I devices are exempt from Premarket Notification 510(k); most Class II devices require Premarket Notification 510(k); and most Class III devices require Premarket Approval.
The Definition of Input Devices. Input devices are hardware components that enable users to interact with a computer. Without input devices, you would not be able to feed instructions to a computer. The most common input devices in modern computers are the mouse (or pointing device), the keyboard, the scanner, the webcam and the microphone. Another input device, serving a niche purpose, is the joystick, used in gaming.