A new screening system for the estimation of ocular anterior chamber angle width

Davide Cassanelli, Giovanni Gibertoni, Stefano Cattini, Luciano Quaranta, Ivano Riva, Carlo Bruttini, Giovanni de Angelis, Luigi Rovati

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Primary Angle Closure Glaucoma occurs more frequently in people with a narrower limbal anterior chamber depth (LACD) condition. Nowadays, clinical gold standard as an assessment technique, i.e. gonioscopy, is invasive and complex, whereas Van Herick (VH) technique is non-invasive, but subjective. The instrument, we propose, can automatically performs the VH procedure using a blue laser line, a piezo-actuator, and an image recognition algorithm embedded on a Raspberry Pi board. Preliminary measurements have been carried out on volunteers, and the results proved the feasibility of our approach. The final instrument unveils a high potential for early-stage diagnosis and screening applications.

Original languageEnglish
Title of host publicationOphthalmic Technologies XXXI
EditorsDaniel X. Hammer, Karen M. Joos, Daniel V. Palanker
ISBN (Electronic)9781510640818
Publication statusPublished - 2021
EventOphthalmic Technologies XXXI 2021 - Virtual, Online, United States
Duration: Mar 6 2021Mar 11 2021

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
ISSN (Print)1605-7422


ConferenceOphthalmic Technologies XXXI 2021
Country/TerritoryUnited States
CityVirtual, Online


  • Anterior chamber angle measurements
  • Automatic instrument
  • Optical measurement methods
  • Primary Angle Closure Glaucoma
  • Van Herick

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging


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