The initial phase of evaluation of this measurement aid is discussed in the following publication:

Crossland MD, Dekker TM, Hancox J, Lisi M, Wemyss TA, Thomas PBM. Evaluation of a Home-Printable Vision Screening Test for Telemedicine. JAMA Ophthalmol. 2021 Mar 1;139(3):271-277. doi: 10.1001/jamaophthalmol.2020.5972. PMID: 33410910

This assessment aid uses optotypes from the following publication:

Hamm LM, Yeoman JP, Anstice N, Dakin SC. The Auckland Optotypes: An open-access pictogram set for measuring recognition acuity. J Vis. 2018 Mar 1;18(3):13. PMID: 29677328

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