A surgical clamp designed to hold or grasp tissue during dissection, commonly used to grasp the cervix. [L. a holder, fr. teneo, to hold]. /teÂ·nacÂ·uÂ·lum/ (tÄ-nakÂ´u-lum) a hooklike surgical instrument for grasping and holding parts.
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Nutrients such as omega-3 fatty acids, lutein, zinc, and vitamins C and E might help ward off age-related vision problems such as macular degeneration and cataracts, studies show. Regularly eating these foods can help lead to good eye health 1  : Green, leafy vegetables such as spinach, kale, and collards. 2  Salmon, tuna, and other oily fish. 3  Eggs, nuts, beans, and other non-meat protein sources. 4  Oranges and other citrus fruits or juices.