For citations:
Proskurina O.V., Tarutta E.P., Iomdina E.N., Strakhov V.V., Brezhsky V.V. A modern classification of asthenopias: clinical forms and stages. Russian Ophthalmological Journal. 2016;9(4):69-73. (In Russ.) https://doi.org/10.21516/2072-0076-2016-9-4-69-73