3D-printing breakthrough produces custom contact lenses in 20 minutes

Summary

The University of Waterloo has developed a new hydrophobic silicone formula to produce personalized contact lenses in just 20 minutes using 3D printing, and eliminated surface defects with an ultra-thin coating.

Why it matters

This technology enables fast and cost-effective personalized lens production for patients with irregular corneal shapes. It also offers an alternative to the high-cost and time-consuming production processes of traditional lenses.

Highlights

• The new hydrophobic silicone formula has been adapted for layered 3D printing.
• An ultra-thin coating eliminates stair-step surface defects, providing comfort and optical clarity.
• Laboratory tests confirmed that the lenses are biocompatible and exhibit optical performance comparable to commercial lenses.

Critical take

While the laboratory results are promising, the long-term effects on comfort and eye health in real-world usage have not yet been fully proven.