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Related Experiment Video

Updated: Apr 14, 2026

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Murine Endoscopy for In Vivo Multimodal Imaging of Carcinogenesis and Assessment of Intestinal Wound Healing and Inflammation

Published on: August 26, 2014

The fundus slit lamp.

Marcus-Matthias Gellrich¹

¹Ophthalmological practice, Ziegeleiweg 10, 25548 Kellinghusen, Germany.

|April 29, 2015

Summary

This study demonstrates how to enhance fundus imaging using a video slit lamp with accessible additions. These techniques allow for comprehensive retinal disease documentation, even with basic equipment.

Area of Science:

Ophthalmology
Medical Imaging
Retinal Diagnostics

Background:

Slit lamp biomicroscopy for fundus examination was established in the 1980s with specific Volk lenses.
Limited advancements have occurred in slit lamp-based retinal imaging since then.
Many ophthalmologists lack access to advanced diagnostic equipment or professional photography services.

Purpose of the Study:

To fully exploit the potential of video slit lamps for fundus documentation using easily accessible additions.
To demonstrate the effects of slit lamp modifications and examination equipment on fundus image quality.
To showcase advanced imaging techniques for comprehensive retinal disease assessment.

Main Methods:

Retrieving still images from video recordings of slit lamp examinations.

Keywords:

Aperture Biomicroscopy Converging lens Flicker test Fundus imaging Mosaic function Retinal surface contour Video slit lamp Videography

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Modifying slit lamp settings (beam, apertures) and using converging lenses (+40 to +90D).

Employing imaging software for mosaic reconstruction (Hugin®) and flicker test (Power Point®).

Main Results:

Accessible additions enable comprehensive fundus documentation with video slit lamps.
Specific lens choices (+90/+60/+40D) cover a wide spectrum of retinal diseases.
Mosaic function provides posterior pole overviews comparable to fundus cameras.
Flicker test aids in monitoring glaucoma and diagnosing macular diseases.
Slit lamp videography can image nearly all retinal diseases, including peripheral and optic nerve conditions.

Conclusions:

Video slit lamp fundus videography is a valuable, accessible tool for retinal disease imaging.
Techniques discussed offer a cost-effective alternative to advanced equipment for many ophthalmologists.
This approach facilitates detailed fundus documentation and monitoring of various retinal pathologies.