Glaucoma
Conditions
Brief summary
This proof-of-concept study aims to determine the feasibility and effectiveness of using a custom head-mounted device for visual field testing. The novel head-mounted device, with custom software, will be compared to a conventional visual field test: The Humphrey Visual Field Analyzer. The investigators will include 30 healthy normal patients, 30 glaucoma suspects, 30 patients with moderate glaucoma, and 30 patients with advanced glaucoma (total: 120 patients). Each patient will perform the conventional test and the head-mounted device visual field test during the study visit, with the order (i.e., which device the patient starts with) being randomized. After the two tests, the patient will fill out a questionnaire to gather information regarding patient comfort and satisfaction. This will repeat each week for 5 weeks, for a total of 5 study visits. The results of the tests (sensitivity thresholds) will be compared. The investigators hypothesize that the results of the conventional and head-mounted device will be similar.
Interventions
DIAGNOSTIC_TESTVisual Field Testing
Visual field testing using the protocol 24-2 and/or 10-2 Threshold Test
Sponsors
Brennan Eadie
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Previous visual field test with Humphrey Field Analyzer indicating normal field, early glaucomatous field damage, moderate glaucomatous field damage, or advanced glaucomatous field damage. * Ability to understand and consent to the study.
Exclusion criteria
* Diagnosis of secondary glaucoma * Diagnosis of non-glaucomatous optic neuropathy or other significant ophthalmic diagnosis that could limit vision (ex. age-related macular degeneration) * Significant media opacity * Previous intraocular surgery other than cataract surgery * Anxiety disorder * Pregnancy * Seizure disorder * Cardiac pacemaker or other implantable devices * Severe vertigo or balance disturbance * Refractive error greater than +4 diopters and less than -6 diopters spherical equivalent * Inability to demonstrate competence to make informed decision regarding study participation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Visual field differential light sensitivity | 5 weeks | Comparison of differential light sensitivity threshold estimated with the Humphrey Visual Field Analyzer and the custom head-mounted device. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Reproducibility of sensitivity values | 5 weeks | Comparison of the reproducibility of sensitivity values estimated with the Humphrey Visual Field Analyzer and the custom head-mounted device. |
Countries
Canada
Contacts
Primary ContactBrennan Eadie, MD, PhD
Outcome results
None listed