Related Experiment Video
Updated: Aug 9, 2026

10:11
Fundus Photography as a Convenient Tool to Study Microvascular Responses to Cardiovascular Disease Risk Factors in Epidemiological Studies
Published on: October 22, 2014
[A variable pressure and distance impression funnel for fundus examination (author's transl)]
Summary
A new impression funnel for Goldmann-3-mirror contact lenses allows for better diagnosis of retinal holes. This device enables viewing up to the equator of the bulbus while the retina remains attached, aiding in light coagulation procedures.
Area of Science:
- Ophthalmology
- Medical Devices
- Retinal Imaging
Context:
- Diagnosis of retinal holes requires clear visualization of the peripheral retina.
- Current methods may have limitations in accessing or visualizing the extreme periphery.
- The Goldmann-3-mirror contact glass is a standard tool in retinal examination.
Purpose:
- To introduce a novel variable pressure and distance impression funnel for the Goldmann-3-mirror contact glass.
- To enhance the diagnostic capabilities for retinal holes by allowing deeper indentation.
- To facilitate improved visualization during light coagulation procedures.
Summary:
- The described apparatus is a variable pressure and variable distance impression funnel.
- It enables indentation of the bulbus up to the equator for diagnosing retinal holes.
- This is achieved while the retina remains attached, offering a significant advantage over existing methods.
Impact:
- Improved diagnostic accuracy for retinal holes, especially in the periphery.
- Enhanced safety and efficacy of light coagulation treatments performed with slit-lamp biomicroscopy.
- Potential for earlier detection and management of retinal pathologies.

