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.
2. any device or plan for tricking a person or thing into being caught unawares. 3. anything resembling a trap or prison. 4. (Building) a fitting for a pipe in the form of a U-shaped or S-shaped bend that contains standing water to prevent the passage of gases. 5. any similar device.