Chinese scientists have created a “smart” contact lens that can self-track and distribute eye medications on a schedule.
And the journal Nature Communications states that these lenses monitor the change in pressure in the eye, and as a result, a drug that, with the help of low current, penetrates the eyeball and lowers the pressure.
And of course there are many solutions to treat eye diseases. But this is the first time scientists have been able to treat and treat contact lenses that are highly sensitive to pressure changes inside the eye.
And glaucoma (glaucoma) is a very serious disease. Intraocular pressure can change several times a day due to stress, fluid intake, exercise and sun, making timely diagnosis and treatment difficult.
The increase in intraocular pressure gradually damages the optic nerve, which sends visual information to the brain. This is why millions of people around the world lose their sight. Glaucoma is usually treated with eye drops, laser or surgery. All of these procedures can reduce intraocular pressure and improve fluid circulation in the eye.
And contact lenses can help treat this disease. If it is sensitive to changes in eye pressure, it prevents vision loss. The researchers tested the innovative contact lenses on pigs and rabbits, and they had high sensitivity to determine the required dose of the drug.
These lenses consist of two layers with a thin layer of air between them. When the pressure inside the eye rises, the shape of the eyeball changes slightly and it changes the size of the airway and the electronics monitor this change and give the command to stop the medication.
These lenses are coated with the anti-glaucoma drug brimonidine. When the pressure inside the eye rises and reaches dangerous levels, the wireless system releases the drug from under the lens and penetrates the cornea under the eye. The effect of electric current on a process called ionotophoresis.
The system, which includes electrical circuits and sensors, is highly flexible and does not require wires for feeding, does not interfere with vision and does not irritate the eyes. This system is installed inside the contact lens.
Source: Vesti. Ro
Source: Arabic RT
