Plate from 18th century encyclopedia showing illustrations of various instruments for amputation,cataract surgery and also various cannulae,and a tourniquet. Couching is the earliest documented form of cataract surgery. As a cataract is a clouding in the lens of the eye,couching is a technique of dislodging the lens,thus removing the opacity. Although couching is no longer part of ophthalmic surgical practice,it was a precursor to modern cataract surgery. A tourniquet is a constricting or compressing device,specifically a bandage,used to control venous and arterial circulation to an extremity for a period of time. A cannula is a tube that can be inserted into the body,often for the delivery or removal of fluid or for the gathering of data. Also shown are bone saws and knives for amputation | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Parker, David |
Bildgröße: | 4355 px × 7120 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |