Millions of Americans live with blurry vision, nearsightedness, or more severe sight problems. While glasses and contact lenses help many people, millions have turned to corrective procedures such as LASIK to sharpen their eyesight. But scientists are now exploring a very different approach that could someday reshape the eye without lasers, cutting, or invasive surgery.
Researchers from Occidental College and the University of California, Irvine have been developing an experimental technique called electromechanical reshaping (EMR). Instead of carving away tissue like LASIK, the method temporarily softens the cornea so it can be gently molded into a new shape.
Early tests in rabbit eyes suggest the technology may one day provide a cheaper, less invasive alternative to traditional laser eye surgery.
How LASIK Changes Vision
The cornea is the clear, dome-shaped surface at the front of the eye. It bends incoming light and helps focus images onto the retina. When the cornea is too steep, too flat, or unevenly shaped, vision becomes blurry.
LASIK corrects those problems by using lasers to remove tiny amounts of corneal tissue and permanently reshape the eye. Although the procedure is widely used and generally considered safe, it can sometimes lead to complications including dry eyes, glare, halos, and weakened corneal structure.
Michael Hill, a chemistry professor at Occidental College, says the basic concept behind LASIK still comes down to tissue removal.
“LASIK is just a fancy way of doing traditional surgery. It’s still carving tissue — it’s just carving with a laser.”
That limitation inspired researchers to search for a way to reshape the cornea without making incisions at all.
A Discovery That Happened by Accident
The idea behind EMR emerged unexpectedly during earlier experiments involving cartilage and other collagen-rich tissues.
“The whole effect was discovered by accident,” explains Brian Wong, a professor and surgeon at the University of California, Irvine. “I was looking at living tissues as moldable materials and discovered this whole process of chemical modification.”
Collagen-rich tissues throughout the body, including the cornea, maintain their shape through networks of charged molecules that hold the structure together. Because these tissues contain large amounts of water, scientists found that applying a mild electric current can temporarily alter the tissue’s acidity level, or pH.
As the pH shifts, the molecular bonds holding the tissue rigid begin to loosen. This briefly makes the tissue flexible enough to reshape. Once the pH returns to normal, the tissue stiffens again and locks into its new form.
Researchers had previously tested EMR on rabbit ear cartilage, pig skin, and scar tissue. The cornea became one of the most promising targets because even small changes in its curvature can dramatically improve vision.
Reshaping the Eye With Electricity
To test the technique, the team created specialized platinum “contact lenses” shaped to match the desired curvature of the cornea. Rabbit eyeballs were placed in a saline solution designed to mimic natural tears, and the platinum lens served as an electrode.
When researchers applied a small electrical potential, the cornea gradually softened and conformed to the shape of the lens. The entire process took roughly one minute, which is similar to the time required for LASIK itself, but without cutting tissue or using expensive laser systems.
The team tested the procedure on 12 rabbit eyeballs. Ten were treated to simulate correction for myopia, also known as nearsightedness. In those eyes, the corneas successfully achieved the intended focusing power that would correspond to improved vision.
Importantly, the cells within the tissue remained alive because the researchers carefully controlled the pH changes during treatment.
The researchers also reported another intriguing possibility. In separate experiments, the same technique appeared capable of reversing some forms of chemical cloudiness in the cornea. Today, severe corneal clouding often requires a full corneal transplant.
Why Researchers Are Excited About EMR
Scientists say EMR could potentially avoid some of the major drawbacks associated with LASIK and related procedures such as PRK. Because the method does not remove corneal tissue, it may preserve more of the eye’s natural structural strength.
Laboratory imaging studies using optical coherence tomography (OCT), confocal microscopy, and second-harmonic generation microscopy also suggested that the cornea’s collagen structure remained largely intact after treatment. Researchers reported no major loss of transparency or obvious tissue damage in the early experiments.
More recent reports and engineering updates have continued to refine the technology. Scientists are now developing advanced electrode contact lenses capable of monitoring corneal shape, hydration, and transparency during treatment. Researchers have also explored whether EMR could eventually be adapted for conditions beyond nearsightedness, including farsightedness, astigmatism, and certain reconstructive procedures involving cartilage-rich tissues.
Some scientists believe the approach could ultimately become far less expensive than laser-based surgery because it may not require large, complex laser systems.
Still a Long Road Ahead
Despite the excitement surrounding the technology, researchers caution that EMR remains highly experimental.
So far, the technique has mainly been tested in isolated rabbit eyes rather than living animals or humans. The next phase involves more extensive animal studies to determine how stable the reshaped cornea remains over time and whether the treatment is safe in living tissue.
“There’s a long road between what we’ve done and the clinic,” concludes Hill. “But, if we get there, this technique is widely applicable, vastly cheaper and potentially even reversible.”
Researchers are also continuing to study how precisely the procedure can correct different types of vision problems and whether long-term side effects might emerge after treatment.
For now, LASIK remains the standard option for surgical vision correction. But EMR has opened the door to a future where fixing blurry vision may no longer require lasers, cutting, or permanent tissue removal.
The research was funded by the National Eye Institute of the National Institutes of Health and the John Stauffer Charitable Trust.