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Related Experiment Video

Updated: Jul 6, 2026

Development of an In Vitro Ocular Platform to Test Contact Lenses
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Inexpensive 3D-Printed Adapter for Wide-Angle Viewing Contact Lens System in Vitreoretinal Surgery.

Kakarla V Chalam1, Anny M S Cheng2,3, Kinza T Ahmed1

  • 1Department of Ophthalmology, Loma Linda University Medical School, Los Angeles, CA, USA.

Journal of Vitreoretinal Diseases
|April 13, 2026
PubMed
Summary

A new 3D-printed contact lens holder for vitreoretinal surgery offers a simple, inexpensive solution. This hybrid system enhances imaging and stereopsis, improving surgical outcomes and patient safety.

Keywords:
contact wide-angle visualization systemslens holdernoncontact wide-angle visualization systemspars plana vitrectomy

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Area of Science:

  • Ophthalmology
  • Medical Devices
  • Surgical Technology

Background:

  • Noncontact viewing systems in vitreoretinal surgery have optical limitations.
  • Existing systems may require an assistant and pose a risk of corneal injury.

Purpose of the Study:

  • To introduce a novel, cost-effective, 3D-printed holder for a high-resolution, wide-angle contact lens.
  • To enhance compatibility with existing surgical setups, specifically the Resight 700 system.

Main Methods:

  • Development of an aspheric pan fundoscopic lens with an adaptive lens holder.
  • Integration of the contact lens system with popular noncontact viewing modalities.
  • Testing the system's performance and safety in vitreoretinal surgical procedures.

Main Results:

  • The hybrid system enables seamless switching between contact and noncontact modes.
  • It provides a wide field of view, enhanced resolution, and improved stereopsis.
  • Successfully used in over 500 vitreoretinal surgeries without complications, demonstrating minimal interference with surgical instruments.

Conclusions:

  • The hybrid contact lens system overcomes optical limitations of noncontact systems.
  • It reduces the need for surgical assistants and minimizes the risk of corneal injury.
  • Offers high-resolution imaging and a wide field of view for complex vitreoretinal procedures.