For ophthalmology departments and clinics
Shorter Waiting Lists Start at Intake
SONDA replaces the time-consuming perimetry appointment at first intake with a single, faster session that any trained member of the eye-care team can run. Significantly easier and more comfortable, SONDA also supports the evaluation of patients who struggle with the demands of standard automated perimetry. The old test stays for follow-up monitoring while your waiting list moves quicker.
Where the queue forms
The Intake Bottleneck
A first visual field examination on the Humphrey Field Analyzer, or a similar traditional perimeter, takes a thirty-minute appointment with a technician: set-up, patient instructions, a practice run and the exam itself. About one in five patients needs a second take because the first result is unreliable, and guidelines recommend two to three tests to establish a reliable baseline1.
Fatigue is part of the problem, and SONDA is validated as a more comfortable alternative: patients rate it significantly easier and less tiring than standard automated perimetry. The waiting list grows at intake, not at follow-up. That is where SONDA improves the operational efficiency of your clinic.
1. European Glaucoma Society, Terminology and Guidelines for Glaucoma, 5th ed. (2020); Br J Ophthalmol 2021;105(Suppl 1),doi:10.1136/bjophthalmol-2021-egsguidelines.
- Today: 1.2 HFA appointments × 30 min: 36 min
- With SONDA: 1 appointment × 10 min: 10 min
From chair to report
How the Appointment Changes
The patient wears the glasses, follows the moving target, and the test is done in 80 to 120 seconds per eye. There is no calibration, no learning effect and no retest cycle: the first measurement is already reliable. The report is ready for the ophthalmologist before the patient has left the room.
- 01
Wear
The patient puts on the SONDA glasses, with corrective lenses matched to their prescription. No calibration, no dilation, no dark room.
- 02
Follow
The patient follows the moving target on the display. 80 to 120 seconds per eye, whatever the severity, and no button to press.
- 03
Report
The visual function report is ready before the patient has left the room, and the ophthalmologist reviews it at the consultation.
Patient experience
Patients consistently rate SONDA easier and less tiring than standard automated perimetry, both differences significant at p < 0.001 in the pivotal investigation. A test patients don’t dread means fewer refusals, and less staff time spent reassuring them through it.
9.0 vs 6.0
Lack of tiredness: patient rating, SONDA vs standard perimetry
9.0 vs 7.3
Ease of performing the test: patient rating, SONDA vs standard perimetry
In the department
Installation & training included
SONDA Hub is installed by Reyedar and the team is trained on site, as part of the one-off purchase.
Reports you can export
Every session produces a structured visual function report that can be exported for the patient record.
Data stays with the hospital
Test data stays under the hospital’s control, in line with its own data-protection policy.
Certified medical devices
Software CE-marked as MDR Class IIa; SONDA Hub hardware Class I, EN 60601 compliant; both made under ISO 13485.
Evidence
Evidence Summary
Validated in a pivotal clinical investigation with 100 glaucoma patients and 100 age-matched controls, with no learning effect in a separate test-retest study.
97%
Global AUC
86%
Accuracy, early POAG
96%
Accuracy, moderate POAG
96%
Accuracy, late POAG
r = 0.78
Correlation with Zeiss HFA
2
Independent clinical investigations on glaucoma
For your clinic
For Your Clinic
Every intake moved from the perimeter to SONDA gives back the technician’s half hour, and the retest slot with it. The session itself can be run by an assistant after a short training, so technician time goes back to the follow-up monitoring only the perimeter can do. The hours recovered become additional first intakes on the same equipment, with the same team.
215 h
Perimeter hours recovered per year
495
Additional intakes per year
1.9 months
Payback
Example values from a Dutch regional hospital; use the calculator for your own figures.
Calculator for hospitals
Your own numbers: visual field tests per year, the share moved to SONDA, staff cost and reimbursement, and when the device pays for itself.
Calculate your capacity gain