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Diabetics May Be Interested In The Advances Develop To Test Blood Glucose Level Without The Discomfort Of Pricking Ones Fingers. The Most Recent Is A Test Monitor Embedded In The Contact lens, Worn In An Eye, That Detects The Glucose Level From Tears. It Is Expected To Be Available Commercially In < 5 Years.

No Needles: Contact Lens Could Monitor Glucose for People with Diabetes

https://www.livescience.com/61518-glucose-sensing-contact-lens.html

Many people with diabetes need to prick their finger for a drop of blood up to eight times a day to monitor their glucose levels, an uncomfortable and cumbersome task. It can all add up to tens of thousands of finger pricks over a person’s lifetime.