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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So can exercising your eyes make your vision stronger, too? Unfortunately, there is no evidence that eye exercises improve vision. Your need for glasses is based on the shape of your eye, the size of your pupil, and the ability to shift focus, which declines as we age.