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Updated: Jan 20, 2026

Smartphone Fundus Photography
Published on: July 6, 2017
Using a Smartphone as an Exoscope Where an Operating Microscope is not Available.
Marco Cenzato1, Alessia Fratianni1, Roberto Stefini2
1Department of Neurosurgery, Ospedale Ca Granda Niguarda, Milan, Italy.
Surgeons can use smartphones as a makeshift exoscope for magnification during neurosurgery when specialized equipment is unavailable. This low-cost solution offers a viable alternative in resource-limited settings, improving surgical care.
Area of Science:
- Neurosurgery
- Medical Device Innovation
- Global Health Technology
Background:
- Neurosurgical operating rooms typically require microscopes for optimal patient care.
- Microscopes are often unavailable in developing countries, posing a challenge to surgical standards.
- Access to magnification is crucial for intricate spinal and brain surgeries.
Purpose of the Study:
- To develop and evaluate a low-cost, smartphone-based exoscope as an alternative to traditional surgical microscopes.
- To assess the feasibility of using adapted smartphones for magnification in neurosurgery in resource-limited environments.
- To provide a practical solution for enhancing surgical visualization where advanced equipment is lacking.
Main Methods:
- A simple "homemade" exoscope was constructed using a shaped tin can, smartphone cover, and a bed-fixed rod.
- This setup provided magnification and illumination for the surgical field.
- The adapted smartphone was utilized as a magnifier during surgical procedures.
Main Results:
- Five neurosurgical interventions, including spinal and brain surgeries, were successfully performed using the smartphone exoscope.
- The device provided adequate magnification, enabling surgeons to overcome the absence of standard magnification systems.
- The smartphone-based exoscope proved effective in facilitating surgical procedures.
Conclusions:
- A smartphone-based exoscope offers an affordable and accessible magnification solution for neurosurgery.
- This innovation can significantly improve surgical capabilities in developing countries lacking advanced equipment.
- The system demonstrates the potential of readily available technology to enhance surgical standards in resource-limited settings.
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