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Aphakia (Sign (Limbal scar in surgical aphakia Deeper AC, Iridodonesis,…

- - - - +10 D with cylindrical lenses for surgically induced astigmatism required
        Addition of +3 to +4 D for near vision
      - Disadvantage
        
        Image is magnified by 30% so not useful in Unilateral aphakia (Produce Diplopia)
        
        Spherical & Chromatic aberration of thick lenses
        Field of vision is limited
        
        Roving ring Scotoma ( Jack in the box phenomenon)
        
        Prismatic effect of lenses
    - - Advantage
        
        Less magnification
        Elimination of aberrations & prismatic effect
        Wider field of vision
        Cosmetically acceptable
      - Disadvantage
        
        More cost
        Cumbersome to wear
        Corneal complications
    - - Keratophakia
        Epikeratophkia
      - Hyperopic LASIK