Modelová Otázka ID 3594 - 
O konvenční zrakové vzdálenosti platí:
Správná odpověď je: A, C
Konvenční zraková vzdálenost je dohodou daná kolmá vzdálenost od oka, v níž je dospělé lidské oko maximálně akomodováno (tzn. čočka má nejvyšší možnou optickou mohutnost). Byla stanovena za účelem snazší konstrukce optických zařízení. Blízký bod zdravého oka by se měl nacházet ve vzdálenosti menší než 25 cm od oka. Dlouhodobé pozorování takto blízkých předmětů však oko zvýšeně namáhá a unavuje.
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