Hartmann E
Institut für medizinische Optik, Universität München.
Klin Monbl Augenheilkd. 1987 Jul;191(1):62-8. doi: 10.1055/s-2008-1050468.
Ophthalmologists today need to be able to determine visual acuity accurately more and more frequently. The result depends not only on the optotypes but also on the investigation methods used. Possible errors are discussed.
