Optonet Project

Standardization of Visual Acuity

Quality logMAR VA Charts for Healthcare

Equip your clinic with a digital logMAR VA system

Affordable and easy to implement

logMAR VA Charts

Superior to traditional ETDRS charts

Precision

Optonet logMAR visual acuity (VA) charts allows several repeated measures to be taken quickly, to improve precision. Letters can be changed randomly infinite times, thus avoiding memorization.

Optonet proposes to always take two VA values and keep the mean. Preliminary real-world data obtained with this method shows a remarkable Test Retest Variability (TRV) of 3.5 ETDRS letters.

Random logMAR Visual Acuity
Visual Acuity Monitoring

Monitoring

Quick repeated measures also enable to identify the patient’s individual criterion for change to monitor VA changes over time.

Optonet does this automatically, calculating mean and standard deviation.

Accuracy

The Vision Unit offers the option of half steps of letter size changes (0.05 log instead of 1.0 log).

This option significantly increases the accuracy of the VA measurements.

Half Steps Visual Acuity
logMAR VA

Compatibility

It is a progressive hybrid web-based app that can be accessed from any computer or tablet and can be displayed on any conventional computer screen.

Scoring System

It offers an easy automated system to record patient’s answers that is faster and minimizes calculation errors.

VA values can be automatically stored in the patient’s file, thus avoiding transcription errors.

logMAR VA
logMAR VA

Measurement Time

Modified procedures can easily be adopted to reduce measurement time.

Both, the automated scoring and storing system also save valuable time during consultations.

Durability

Computer screens provide better background luminance and durability than printed charts on illuminated cabinets.

logMAR Visual Acuity
4K Visual Acuity

Quality

The Optonet Unit is now compatible with 4K monitors (28″), which can display the same number of 5-letter rows presented in standard ETDRS VA charts, and with image quality akin to backlit ETDRS printouts (the “Gold Standard” for VA measurement until now).

Optonet system in combination with a 4K monitor is probably the most accurate (digital) system available for VA measurement in hospitals and research.

To display the Optonet system, the 28” 4K screen requires a computer (a mini PC* is recommended for its reduced size and price). Android multimedia devices are not compatible.

*Android multimedia devices are not compatible with 4K screens for Optonet VA charts.

Cost Efficiency

The OVU can be displayed on pre-existing equipment; or the clinic can purchase unexpensive equipment, such as an Android TV device (costing around £75) together with a conventional screen (27” size monitor can be found for just £135). A traditional complete ETDRS system with printed letter charts costs around £1,500; and is not as durable.

Android TV

Learn more…

Free Trial

Follow the link to activate your Optonet Vision Unit