Open Speech recognition platform for acuity testing
Electronic vision-tests rely on responses being entered into a computer which can be tricky (e.g. when self-testing). We are developing a free-to-use resource to support voice recognition in vision-testing apps.
Our machine-learning system has been trained on 250 speakers reading 40 words aloud (twice). Words include letters (“C”, “E”…), Auckland Optotypes (“bunny”, “duck”…) & control commands (“yes”, “quit”…). If you have microphone or webcam, are in a relatively quiet environment & can spare 4-5 mins then you can help us by taking part at thus link.
Face “barcodes”
Matlab code to do orientation band-limited filtering (Dakin & Watt, 2009, Journal of Vision 9)
Simulated refractive error
Some Matlab code to simulate different kinds of optical blur. Download the .zip file at the link below and please cite this page if you find the code useful!
Universal remote visual acuity testing
A free online platform for measuring the visual acuity of kids and adults
Optokinetic Nystagmus
A (40 second!) narrated movie illustrating optokinetic nystagmus
The Auckland Optotypes
Optotypes are symbols used to test visual acuity. We have developed a set of 10 optotypes that are both name-able by children and whose legibility is well-balanced (i.e. each item elicits a similar acuity-level to the others). Black-and-white and vanishing versions of the set are available.
The set has undergone a variety of validation studies (see Papers section) and is used by several online tests (e.g. MyAcuity, FRACT)
The symbols and other materials can be downloaded from Github (link below) & are distributed under an attribution no-commercialisation licence: you can use for non-profit purposes for free, but please reference this paper: Hamm, L. M., J. P. Yeoman, N. Anstice and S. C. Dakin (2018). "The Auckland Optotypes: An open-access pictogram set for measuring recognition acuity." Journal of Vision 18(3): 13-13.