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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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Customizing a Cryolite Glass Prosthetic Eye
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Temperature Elevation in the Human Eye Due To Intraocular Projection Prosthesis Device.

Dipika Gongal1, Siddhant Thakur2, Ashay Panse1

  • 1Department of Civil and Materials Engineering, University of Illinois at Chicago, Chicago, IL 60607.

Journal of Thermal Science and Engineering Applications
|October 26, 2022
PubMed
Summary
This summary is machine-generated.

This study analyzed a bionic eye prosthesis, finding it safe for vision restoration. The device maintains eye tissue temperature below the 2°C limit, offering a potential solution for corneal blindness.

Keywords:
bioheat transfercorneal prosthesisfinite element analysisnatural convectionthermal eye model

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Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Corneal opacity is a primary cause of global blindness.
  • Current treatments like corneal transplantation face limitations such as donor scarcity and infection risks.
  • An intraocular projection prosthesis offers a novel alternative for treating corneal diseases.

Purpose of the Study:

  • To conduct a transient thermal analysis of a bionic eye model.
  • To determine the maximum power output of the intraocular projection prosthesis without exceeding safety temperature limits for implantable devices.
  • To ensure the device's thermal safety for potential clinical application.

Main Methods:

  • Development of a 3D finite element model of the human eye.
  • Incorporation of physiological factors like blood perfusion and natural convection fluid flow.
  • Simulation of the intraocular projection prosthesis's thermal performance at a specific proximity to the iris.

Main Results:

  • The bionic eye model demonstrated a tissue temperature rise of less than 2°C.
  • This was achieved at a maximum power dissipation of 100 mW for the LED and 25 mW for the microdisplay.
  • The device was positioned 1.95 mm from the iris, adhering to international safety standards.

Conclusions:

  • The intraocular projection prosthesis can operate within safe thermal limits for implantable devices.
  • This finding supports the potential of the bionic eye device as a viable treatment for corneal blindness.
  • Further research and development can advance this technology for vision restoration.