Tetra is a dehydrated amniotic membrane allograft used to improve surgical outcomes including procedures in ophthalmology and Optometry.

  • Tetra is available in two thicknesses for use in mild to severe conditions.

  Tetra Slim

  • Tetra Slim is a single epithelial layer of amniotic membrane that is used for mild to moderate conditions.

Tetra Thick

  • Tetra Thick is a dual epithelial layer of amniotic membrane that is used for moderate to severe conditions.


Tetra has the following advantages:

  • Stores dry at room temperature
  • Suitable for immediate use off the shelf
  • Hydrates rapidly
  • Adheres to the ocular surface
  • Sterilized with gamma radiation to SAL 10-6 in accordance with ISO 11137
  • Five-year shelf life
  • Textured surface facilitates ease of handling and placement
  • Symmetric graft allows either side to be placed in contact with ocular surface



Tetra Single and Dual Layer Dimensions

Tetra 1 x 1

Tetra 1 x 2

Tetra 2 x 2

Tetra IFU

  • Maintain allograft in a dry environment at room temperature
  • (18°C/64°F to 34°C/93°F)
  • No refrigeration is necessary
  • Apply dry or wet to ocular surface
  • Apply either graft surface to the wound site; Symmetric design removes stromal layer/epithelial layer facing requirements
  • Graft may be manipulated in place and/or repositioned during surgery

Preparation and Application

  1. Open the product package and remove peel-pouch containing the amnion graft.
  2. Open outer pouch and place inner pouch onto the sterile field.
  3. Wait to open inner package until ready to place graft onto wound site.
  4. Before Application peel open or trim through inner pouch to expose the graft.
  5. Remove graft using sterile gloves or smooth tip forceps.
  6. Apply the graft over the intended site.
  7. If necessary, a graft may be hydrated prior to applying to the surgical site
  8. Sutures or adhesives may be used if necessary