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    Cataract/Anterior Segment

    Nuclear cataracts are seen as a central opacity on slit lamp examination and progress slowly and are bilateral. As the lens nucleus becomes harder the index of refraction increases and leads to a myopic shift. Second sight refers to hyperopic presbyopic individuals becoming less dependent on their spectacle correction due to the nuclear cataract. The top picture demonstrates a nuclear cataract under diffuse illumination The bottom picture depicts a nuclear cataract with a slit beam.