Optonet Vision Unit
Moving towards computerized testing of visual function
Digital based displays are also highly versatile: they can be easily calibrated for any viewing distance, –allow customized selection of optotypes for difficult patients (for example when testing young children or low vision patients)–, provide automatic recording of responses, and allow changes in psychophysical methods for determining thresholds.
The superiority of computer based visual displays for vision testing is unchallenged, and hence the solid trend to replace both old wall-mounted Snellen charts and projectors in modern practices. However, the implementation of computerized charts is being hampered by their high cost and software compatibility issues. These reasons explain why this superior technology is not yet widespread internationally.
At present, the vision unit is available as a freeware resource to all eye-care practitioners, and can be easily installed in most conventional computers for the display of high quality optotypes on a standard flat screen. The vision unit has been developed according to international guidelines in order to promote widespread and international acceptance of standardized visual tests.
How to implement the Vision Unit in the clinic?
The Optonet vision unit is an online application designed to be compatible with any digital device. The tests can therefore be displayed on any computer screen (or Tablet) and can be calibrated for any viewing distance with a millimeter precision. The vision Unit can be easily incorporated to every examination room, either to complement or to replace a more dated system.
We ask professionals to get involved in the continuous updating of the vision unit. The suggestions by practitioners guide new improvements of the software to best adapt it to their needs. We want the Optonet vision unit to be designed by eye care practitioners for them to use daily. We would like to invite you to give us your feedback on how to further improve the vision Unit.