Couching (ophthalmology)
Earliest known cataract surgery / From Wikipedia, the free encyclopedia
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For the embroidery technique, see Couching.
Couching is the earliest documented form of cataract surgery. It involves dislodging the lens of the eye, thus removing the cloudiness caused by the cataract. Couching was a precursor to modern cataract surgery and pars plana vitrectomy.