Diamond keratomes make the best incisions for cataract surgery because they are incredibly sharp and make very clean cuts in the tissue. These instruments are quite expensive and there is a learning curve for using them because of the lack of tactile feedback. Whereas a steel blade would face some resistance when being pushed through the corneal tissue, there is virtually none with the diamond keratome. ANd when comparing cataract incisions made with a diamond keratome to those made with a femtosecond laser, it is not enough close: the diamond is better.
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