Sutures in Ophthalmology

Sutures are classified as follows:

  • ORIGIN – natural vs synthetic
  • ABSORPTION – absorbable vs nonabsorbable
  • FIBER CONSTRUCTION – multifilament vs monofilament

NATURAL vs SYNTHETIC:

Natural absorbable – plain or chromic catgut

Natural non-absorbable – silk, linen, stainless steel

Synthetic absorbable –  polyglycolic acid (DEXON), polyglactin (VICRYL), polyglyconate (MAXON), polydiaxanone (PDS), polyglycaprone, biosyn (Glycomer 361), caprosyn

Synthetic non-absorbable – polyamide (NYLON), polyester (DACRON), polypropylene (PROLENE), polybutester

*DACRON – uncoated (MERSILINE), coated (ETHIBOND)

The list below are commonly used sutures in ophthalmology:

  • 3-0 Silk – sling rectus muscles in scleral buckle surgery
  • 4-0 Silk – bridle suture
  • 4-0 Vicryl – lateral tarsal strip procedures
  • 5-0 Vicryl – skin closure / subcutaneous or orbicularis muscles
  • 7-0 Vicryl or 8-0 Vicryl – sclerotomy ports / conjunctiva closure
  • Vicryl – strabismus surgery
  • 5-0 or 6-0 Nylon – skin closure
  • 9-0 Nylon – scleral laceration near limbus
  • 10-0 Nylon – corneal wounds
  • 5-0 Ethibond / Mersiline – scleral buckle fixation
  • 9-0 Prolene – iridodialysis repair
  • 10-0 Prolene – suture fixated intraocular lenses

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