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En 80-årig pat, blind på vä öga efter en artärocklusion för många år sedan genomgår en kataraktop men under op lyckas man av tekniska skäl inte lägga in en intraokulär lins utan lämnar ögat utan lins när man sluter det.a) Vad kallas tillståndet med ett öga som saknar lins? (1p)b) Vilket ungefärligt refraktionsfel uppkommer hos denna pat som efter op saknar en lins? Vi förutsätter att man efter op skall korrigera det uppkomna refraktionsfelet med glasögon. (1p) c) Hur kan man tänkas att korrigera det uppkomna refraktionsfelet om man inte använder en glasögonlins? (1p)
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