by Yolanda C. Stallings February 4th, 2020
Battery Powered Self-Moisturizing Contact Lens the latest new product. The eyecare industry continues to advance in technology. The baby boomer generation represents a large percentage of the vision care market. 54.8 million Americans 65 and older have spent 39% on eye care. The four primary eye conditions are:
- Macular Degeneration
- Diabetic Retinopathy
- Dry Eyes
FOUR COMMON PROBLEMS WITH CONTACT LENS
- red ,itchy eyes
- light sensitivity
- blurry vision
- dry eyes
Red ,itchy eyes-are caused by contact lenses holding the irritants in the lenses such as smoke, pollen, dust, smog and makeup. This eventually leads to some buildup. The eyes become red and irritable. If the conditions persists, it could lead to conjunctivitis.
Light sensitivity-If you wear your contact lens for prolonged periods, it will lead to corneal ulcer and abrasion. The cornea can be scratched due to contact with dust, dirt, sand, contact lenses, and even pieces of paper- immediate attention is required for risk of an infection and corneal ulcer.
Blurry vision-This can occur if your contacts are dirty or damaged in some way. Blurry vision can be the result from glaucoma, macular degeneration, cataracts, or some form of infection.
It’s crucial to see an ophthalmologist if you notice any changes in your vision.
Dry eyes-When contact lenses lose water, they react by drawing moisture from the eye, causing it to dry up. The lens will cause you discomfort, and your eyes will become red and itchy. Another factor to consider, as you age you lose tear production in the eyes resulting in dry eyes.
NEW BATTERY POWERED SELF MOISTERIZING CONTACT LENS
Japanese scientists at Tohoku University have reported in journal Advanced Materials Technologies on the development of a contact lens that moisturizes the eye using the reservoir behind the eyelid.
The eyes can dry up very fast with the contact lens covering its corneas’ resulting in corneal ulcers and abrasion. To combat this dilemma, the researchers created the contact lens made from hydrogel.
Professor Matsuhiko Nishizawa, an engineer at Tohoku University states; “Although there have been many advancements in new functions for smart contact lenses, there has been little progress in solving the drawbacks associated with wearing contact lenses day to day.” One of the biggest problems with contact lenses is they can cause “dry eye syndrome” due to reduced blinking and increased moisture evaporation.
Hydrogel provides hydration to wounds and relieves pain for up to six hours. This will enable five times more oxygen to permeate through the lens to the cornea.
Researchers say the contact lens made from hydrogel will carry an electric charge across the surface. A process known as electroosmotic flow, the electric current pushes the tears up over the contact lens even on it’s rear side that contacts with the eye.
This automatic moisturizing process will make blinking unnecessary as long as there’s current across the eye. This process carries tiny biocompatible batteries (Mg/O2 battery and fructose/O2 enzymatic battery).
The researchers say they can create different lens compositions that have different charge densities, and therefore different tear flow rates. This project is still at the lab stage, but the researchers are confident that soon we may see active contacts that you can wear for extended periods without getting a dry eye
Battery Powered Self-Moisturizing Contact Lens. https://www.medgadget.com/2020/01/battery-poweredcontactlenses.html
Corneal Abrasipn (scratch); first aid-Mayo Clinic. https://www.mayoclinic.org/first-aid/first-aid-corneal-abrasion/ar-20056659
4 Common Contact Lens Problems and Their Solution. https://www.youreyesite.com/4-common-contact-lens-problems-and-their-solution/
Self-Moisturizing Smart Contact Lens Employing Electroosmosis. Advanced Materials Technologies/Volume 5, Issue 1.https://www.onlinelibrary.wiley.com/doi/abs/10.1002/admt.201900889