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Related Experiment Video

Updated: Nov 11, 2025

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THERMAL ANALYSIS OF INTRAOCULAR ELECTRONIC DISPLAY PROJECTOR VISUAL PROSTHESIS.

D Gongal1, S Thakur2, A Panse2

  • 1Department of Civil and Materials Engineering, University of Illinois at Chicago, Chicago, IL, USA.

Numerical Heat Transfer. Part A, Applications
|March 29, 2021
PubMed
Summary
This summary is machine-generated.

An intraocular projection device for corneal opacity may overheat. Adding an insulating air gap reduced tissue temperature below the 2°C limit, ensuring patient safety for this vision restoration technology.

Keywords:
corneal blindnesscorneal prosthesiscorneal transplantationfinite element analysisthermal eye model

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Medical Device Design

Background:

  • Corneal opacity is a significant cause of global blindness, impairing vision by blocking light entry to the retina.
  • Current treatments for corneal opacity are limited, necessitating innovative solutions like intraocular devices.
  • Medical devices must adhere to strict thermal safety regulations, limiting tissue temperature increase to 2°C.

Purpose of the Study:

  • To establish the power budget for a novel intraocular projection device designed to treat corneal opacity.
  • To evaluate the thermal impact of the intraocular device on surrounding eye tissues.
  • To ensure the device's operational temperature remains within safe, internationally regulated limits.

Main Methods:

  • Steady-state thermal finite element analysis was performed on two distinct eye models.
  • The intraocular projection device was simulated at a distance of 9.98 mm from the retina.
  • Thermal performance was analyzed with and without an integrated air gap insulator.

Main Results:

  • The intraocular device operated at maximum powers of 82 mW and 91 mW in the two models without insulation.
  • Extending the device by 0.5 mm to create an air gap significantly reduced tissue heating.
  • With the air gap, tissue temperature remained below the 2°C limit even at 100 mW operation.

Conclusions:

  • The intraocular projection device shows potential for treating corneal opacity.
  • An integrated air gap effectively insulates ocular tissues, managing device-induced thermal load.
  • This design modification ensures the device meets safety standards for clinical application in vision restoration.