Ìý
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Proxim. n.d. Canada.Ìý -
CanaÂdian AssoÂciÂaÂtion of Optometrists. 2023.Ìý -
GovÂernÂment of Alberta. 2019.Ìý -
Michael Rubin, MDCM. Merck Manuel. 2020. USA. -
Mayo Clinic. 2020. USA. -
MedÂline Plus. 2018. USA. -
National InstiÂtute of NeuÂroÂlogÂiÂcal DisÂorÂders and Stroke. 2024. USA. -
PubMed Health. 2017. USA. -
College of Optometrists. 2024. UK.