Olavi Pärssinen1. 1. Ophthalmic Department, Central Hospital of Central Finland, Jyväskylä, Finland. olavi.parssinen@top.fimnet.fi
Abstract
PURPOSE: To study change in the prevalence of myopia in Finland during the 20th century. METHODS: A review of the literature on the prevalence of myopia in Finland. RESULTS: During the 20th century, the prevalence of myopia among 7- to 8-year-old schoolchildren did not increase in Finland and varied between 0.5% and 1.9%. Among 14- to 15-year-old school children, myopia doubled to about 21%. Among adults born during the first three decades of the 20th century, the prevalence of myopia was <10%, whereas among those born during the second half of the 20th century, the prevalence rose to 21-30%. The change in mean refraction was towards myopia. CONCLUSIONS: During the course of the 20th century, myopia among teenagers and adults in Finland significantly increased and the mean change in refraction was towards myopia. Increased education is proposed as the main reason behind these changes.
PURPOSE: To study change in the prevalence of myopia in Finland during the 20th century. METHODS: A review of the literature on the prevalence of myopia in Finland. RESULTS: During the 20th century, the prevalence of myopia among 7- to 8-year-old schoolchildren did not increase in Finland and varied between 0.5% and 1.9%. Among 14- to 15-year-old school children, myopia doubled to about 21%. Among adults born during the first three decades of the 20th century, the prevalence of myopia was <10%, whereas among those born during the second half of the 20th century, the prevalence rose to 21-30%. The change in mean refraction was towards myopia. CONCLUSIONS: During the course of the 20th century, myopia among teenagers and adults in Finland significantly increased and the mean change in refraction was towards myopia. Increased education is proposed as the main reason behind these changes.
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Authors: Katie M Williams; Geir Bertelsen; Phillippa Cumberland; Christian Wolfram; Virginie J M Verhoeven; Eleftherios Anastasopoulos; Gabriëlle H S Buitendijk; Audrey Cougnard-Grégoire; Catherine Creuzot-Garcher; Maja Gran Erke; Ruth Hogg; René Höhn; Pirro Hysi; Anthony P Khawaja; Jean-François Korobelnik; Janina Ried; Johannes R Vingerling; Alain Bron; Jean-François Dartigues; Astrid Fletcher; Albert Hofman; Robert W A M Kuijpers; Robert N Luben; Konrad Oxele; Fotis Topouzis; Therese von Hanno; Alireza Mirshahi; Paul J Foster; Cornelia M van Duijn; Norbert Pfeiffer; Cécile Delcourt; Caroline C W Klaver; Jugnoo Rahi; Christopher J Hammond Journal: Ophthalmology Date: 2015-05-13 Impact factor: 12.079