Modelová Otázka ID 3592 - 
K čemu dojde, jestliže člověk trpící dalekozrakostí bude pozorovat předměty pod vodou s otevřenýma očima?
Správná odpověď je: D
,p> Voda má oproti vzduchu vyšší index lomu, který je srovnatelný s indexem lomu rohovky, sklivce, čočky i komorové vody. Tato skutečnost se u zdravého oka při ponoření pod vodní hladinu projeví výrazným snížením optické mohutnosti lidského oka, což vede k tvorbě obrazu za sítnicí. Dalekozrakost spočívá ve tvorbě obrazu za sítnicí a tato vada se při ponoření pod vodu prohlubuje. Ve vodě se tedy lidské oko chová více jako rozptylná čočka. Pod vodou by teoreticky mohl dobře vidět krátkozraký jedinec, jehož vadu by korigoval právě pokles optické mohutnosti jeho oka.
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