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Related Concept Videos

Glaucoma: Overview01:25

Glaucoma: Overview

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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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Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Related Experiment Video

Updated: Aug 12, 2025

Subjective Refraction Test Using a Smartphone for Vision Screening
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Published on: October 18, 2024

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Teleglaucoma Using a New Smartphone-Based Tool for Visual Field Assessment.

Elisabeth Grau1, Stefan Andrae1, Folkert Horn1

  • 1Department of Ophthalmology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg.

Journal of Glaucoma
|February 2, 2023
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Summary

Smartphone-based campimetry (Sb-C) shows strong correlation with traditional methods for visual field testing. This digital tool offers a promising solution for remote glaucoma screening and monitoring, enhancing telemedical diagnostics.

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Area of Science:

  • Ophthalmology
  • Digital Health
  • Medical Diagnostics

Background:

  • Telemedical diagnostics are crucial, especially highlighted by the COVID-19 pandemic.
  • Smartphone-based campimetry (Sb-C) is an emerging digital tool for remote visual field testing.
  • This study evaluates Sb-C's comparability with a standard device for ophthalmic care continuity.

Purpose of the Study:

  • To assess the comparability of smartphone-based campimetry (Sb-C) with the Octopus 900.
  • To validate Sb-C as a tool for functional ophthalmic diagnosis.
  • To support ophthalmological care delivery during social distancing measures.

Main Methods:

  • 93 eyes were tested using both Octopus G1 perimetry and Sb-C.
  • Sb-C utilized VR glasses and an iPhone 6 with the SmartCampiTracker app, testing a 30-degree visual field with 59 points.
  • Test-retest reliability was assessed in 6 healthy participants.

Main Results:

  • The study included 93 eyes from 48 women and 45 men, with various glaucoma stages.
  • Mean sensitivity (MS) was 23.13 dB for Octopus G1 and 21.23 dB for Sb-C.
  • A strong correlation (r=0.815, P<0.05) was found between Sb-C and Octopus G1, with good test-retest reliability (r=0.591, P<0.05).

Conclusions:

  • Smartphone-based campimetry (Sb-C) demonstrates significant potential for remote glaucoma screening.
  • Sb-C can aid in monitoring glaucoma disease progression from an ophthalmologic clinic.
  • Technical adjustments may further enhance the utility of Sb-C in telemedical diagnostics.