Individuals with irregularly shaped corneas, which may result from congenital conditions, injuries, or surgical procedures, often find that standard soft contact lenses are inadequate. These patients typically require rigid lenses tailored to the precise dimensions of their corneas, a process that can involve multiple visits to an eye care professional and numerous fittings with various lens samples. In a significant advancement, researchers at the University of Waterloo have devised an innovative technique that enables the design and 3D-printing of custom lenses in a mere 20 minutes. The process begins with a scan of the patient's cornea, which is used to generate a digital model. This model ensures that the inner surface of the lens conforms to the eye's curvature, while the outer surface is engineered for optimal vision correction. Once the design is finalized, it is transmitted to a 3D printer. The team has also developed a specialized material that cures with exceptional accuracy, remaining clear and allowing for adequate oxygen permeability. Laboratory evaluations have demonstrated that these lenses transmit over 90% of visible light, exhibit excellent oxygen flow, and maintain their durability after being stored for 90 days. Additionally, tests revealed that the material is safe for human corneal cells. Despite these promising results, the technology must still undergo extensive testing, starting with animal studies and subsequently progressing to human clinical trials before it can be utilized in medical practices. Would you consider trying these custom-made contact lenses?
Informational material. 18+.
