A novel excel sheet conversion tool from Snellen fraction to LogMAR including 'counting fingers', 'hand movement', 'light perception' and 'no light perception' and focused review of literature of low visual acuity reference values
Acta Ophthalmol. 2021 Sep;99(6):e963-e965.
doi: 10.1111/aos.14659.
Epub 2020 Dec 16.