Virtual-reality Cataract Surgery Simulator Using Haptic Sensory Substitution in Continuous Circular Capsulorhexis

Area of Science:

• Ophthalmology
• Medical Simulation
• Haptic Technology

Background:

• Cataract surgery is a common geriatric procedure, but resident training is limited by ethical restrictions.
• Existing virtual reality (VR) surgical simulators often lack realistic haptic feedback or are tethered, hindering skill development.
• Developing effective, unconstrained haptic simulators is crucial for novice cataract surgeons.

Purpose of the Study:

• To develop an advanced VR-based cataract surgery simulator incorporating haptic sensory substitution.
• To accurately reproduce the tactile sensations experienced during cataract surgery, particularly during Continuous Circular Capsulorhexis (CCC).
• To provide a realistic and accessible training tool for surgical residents.

Main Methods:

• Developed a haptic surgical training tool integrating VR and sensory substitution.
• Created viscoelastic lens dummies to measure vibrations during simulated CCC.
• Designed and implemented vibration models for haptic feedback within the VR simulator.

Main Results:

• Successfully reproduced realistic haptic sensations for virtual contacts during simulated surgery.
• The developed VR system effectively implemented contact vibrations, enhancing the tactile experience.
• Validated the system's ability to mimic the feel of surgical tool interaction.

Conclusions:

• The developed VR cataract surgery simulator with haptic feedback offers a realistic training environment.
• Sensory substitution effectively replicates crucial tactile feedback, addressing limitations of current simulators.
• This technology can significantly improve surgical resident training and proficiency in cataract surgery.