A clinical survey
نویسنده
چکیده
During the last decade ophthalmic surgeons have shown increasing interest in absorbable sutures, though a large body of opinion still favours silk and synthetic fibres. Hitherto, prejudice against catgut centred in the uncertainty of tissue reaction, wound healing, and absorption, and physical defects such as brittleness and unsuitable needles. The change of outlook follows improved manufacturing processes resulting in stronger and finer catgut and needles more suitable for ophthalmic work. A substitute for catgut, Plain and Chromic Extruded Collagen*, has been made from the flexor tendons of cattle. These are digested and dispersed in an acid medium and homogenized. The collagen dispersion is then extruded to form a tape and multiple tapes are converted into round uniform strands of specified thickness and length and the needles are swaged on. The sutures are sealed in aluminium foil packets and sterilized by electron beam irradiation. My 5 years' personal experience with catgut in cataract extractions has given convincing proof of the value of absorbable sutures in ophthalmic surgery. This paper reviews 151 cataract extractions and I55 squint operations in which, with the co-operation of the manufacturers, Extruded Collagen only was used in order to assess from a clinical point of view its physical and biological properties.
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