Thomas Pocklington Trust, The College of Optometrists, Optical Confederation. Site tests at home (2013). [Accessed Jul 2020]

Optical Confederation Guidance - Sight tests at home

Click https://www.fodo.com/downloads/managed/Guidance/Domiciliary%20eye%20care/7_Domicilairy%20Leaflet%20Sight%20Tests%20at%20Home.pdf link to open resource.