Medical Devices and Medicine-Device Combinations

2. Mode of action

How each medical device works will depend on what it is used for. For example, spectacles are a relatively simple device that alters the way that light enters the eyes. This corrects eyesight for the user. A more complex device, such as a blood glucose meter, works to monitor the levels of sugars in the blood. This is important in diabetes mellitus because these patients cannot regulate their blood sugars normally. If blood sugar levels increase or decrease too much then the effects can be harmful. Therefore, careful monitoring of blood sugars, along with the use of insulin to manage blood sugar levels, is important for patients with diabetes.