Novel laser-activated solder for sealing corneal wounds

Guillermo Noguera, Woo Seok Lee, Juan Castro-Combs, Roy S. Chuck, Barbara Soltz, Robert Soltz, Ashley Behrens

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

PURPOSE. To compare the effectiveness of a laser-activated biological tissue solder with that of standard sutures for sealing corneal incisions. METHODS. Two keratome knives measuring either 3.0 mm or 2.85 mm were used to create a non-self-sealing peripheral oblique corneal wound (POCW) or a central perpendicular corneal wound (CPCW) in fresh rabbit cadaver eyes. Wounds were sealed with a solder strip (POCW; n = 5), a solder patch (CPCW; n = 5), or three interrupted nylon 10-0 sutures (n = 5). After the solder was placed on the wound, a diode laser was used to activate the solder, resulting in cross-linking to tissue. Wound stability was tested by a stepwise infusion of saline, and pressure changes were monitored with a digital manometer. Leaking pressure was recorded. RESULTS. The pressurized mean baseline IOP in the intact globe was 131.13 mm Hg (SD, 4.66). Mean IOP after CPCW was 1.7 mm Hg (SD, 0.13); for POCW it was 3.62 mm Hg (SD, 3.09). For the CPCW group, the mean leaking pressure in the sutured eyes was 82.76 mm Hg (SD, 6.55), whereas in the solder patch it was 101.42 mm Hg (SD, 29.92; P = 0.2222). For the POCW group, the mean leaking pressure in the sutured eyes was 33.44 mm Hg (SD, 9.38), and the mean IOP achieved in the solder repaired eyes was 125.16 mm Hg (SD, 9-85; P = 0.0079). CONCLUSIONS. The tested laser-activated solder was as effective as sutures when used as a patch and superior to sutures for clear corneal incisions in this animal ex vivo model.

Original languageEnglish (US)
Pages (from-to)1038-1042
Number of pages5
JournalInvestigative Ophthalmology and Visual Science
Volume48
Issue number3
DOIs
StatePublished - Mar 2007
Externally publishedYes

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Lasers
Wounds and Injuries
Sutures
Pressure
Semiconductor Lasers
Nylons
Cadaver
Rabbits

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Noguera, G., Lee, W. S., Castro-Combs, J., Chuck, R. S., Soltz, B., Soltz, R., & Behrens, A. (2007). Novel laser-activated solder for sealing corneal wounds. Investigative Ophthalmology and Visual Science, 48(3), 1038-1042. https://doi.org/10.1167/iovs.06-0488

Novel laser-activated solder for sealing corneal wounds. / Noguera, Guillermo; Lee, Woo Seok; Castro-Combs, Juan; Chuck, Roy S.; Soltz, Barbara; Soltz, Robert; Behrens, Ashley.

In: Investigative Ophthalmology and Visual Science, Vol. 48, No. 3, 03.2007, p. 1038-1042.

Research output: Contribution to journalArticle

Noguera, G, Lee, WS, Castro-Combs, J, Chuck, RS, Soltz, B, Soltz, R & Behrens, A 2007, 'Novel laser-activated solder for sealing corneal wounds', Investigative Ophthalmology and Visual Science, vol. 48, no. 3, pp. 1038-1042. https://doi.org/10.1167/iovs.06-0488
Noguera, Guillermo ; Lee, Woo Seok ; Castro-Combs, Juan ; Chuck, Roy S. ; Soltz, Barbara ; Soltz, Robert ; Behrens, Ashley. / Novel laser-activated solder for sealing corneal wounds. In: Investigative Ophthalmology and Visual Science. 2007 ; Vol. 48, No. 3. pp. 1038-1042.
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N2 - PURPOSE. To compare the effectiveness of a laser-activated biological tissue solder with that of standard sutures for sealing corneal incisions. METHODS. Two keratome knives measuring either 3.0 mm or 2.85 mm were used to create a non-self-sealing peripheral oblique corneal wound (POCW) or a central perpendicular corneal wound (CPCW) in fresh rabbit cadaver eyes. Wounds were sealed with a solder strip (POCW; n = 5), a solder patch (CPCW; n = 5), or three interrupted nylon 10-0 sutures (n = 5). After the solder was placed on the wound, a diode laser was used to activate the solder, resulting in cross-linking to tissue. Wound stability was tested by a stepwise infusion of saline, and pressure changes were monitored with a digital manometer. Leaking pressure was recorded. RESULTS. The pressurized mean baseline IOP in the intact globe was 131.13 mm Hg (SD, 4.66). Mean IOP after CPCW was 1.7 mm Hg (SD, 0.13); for POCW it was 3.62 mm Hg (SD, 3.09). For the CPCW group, the mean leaking pressure in the sutured eyes was 82.76 mm Hg (SD, 6.55), whereas in the solder patch it was 101.42 mm Hg (SD, 29.92; P = 0.2222). For the POCW group, the mean leaking pressure in the sutured eyes was 33.44 mm Hg (SD, 9.38), and the mean IOP achieved in the solder repaired eyes was 125.16 mm Hg (SD, 9-85; P = 0.0079). CONCLUSIONS. The tested laser-activated solder was as effective as sutures when used as a patch and superior to sutures for clear corneal incisions in this animal ex vivo model.

AB - PURPOSE. To compare the effectiveness of a laser-activated biological tissue solder with that of standard sutures for sealing corneal incisions. METHODS. Two keratome knives measuring either 3.0 mm or 2.85 mm were used to create a non-self-sealing peripheral oblique corneal wound (POCW) or a central perpendicular corneal wound (CPCW) in fresh rabbit cadaver eyes. Wounds were sealed with a solder strip (POCW; n = 5), a solder patch (CPCW; n = 5), or three interrupted nylon 10-0 sutures (n = 5). After the solder was placed on the wound, a diode laser was used to activate the solder, resulting in cross-linking to tissue. Wound stability was tested by a stepwise infusion of saline, and pressure changes were monitored with a digital manometer. Leaking pressure was recorded. RESULTS. The pressurized mean baseline IOP in the intact globe was 131.13 mm Hg (SD, 4.66). Mean IOP after CPCW was 1.7 mm Hg (SD, 0.13); for POCW it was 3.62 mm Hg (SD, 3.09). For the CPCW group, the mean leaking pressure in the sutured eyes was 82.76 mm Hg (SD, 6.55), whereas in the solder patch it was 101.42 mm Hg (SD, 29.92; P = 0.2222). For the POCW group, the mean leaking pressure in the sutured eyes was 33.44 mm Hg (SD, 9.38), and the mean IOP achieved in the solder repaired eyes was 125.16 mm Hg (SD, 9-85; P = 0.0079). CONCLUSIONS. The tested laser-activated solder was as effective as sutures when used as a patch and superior to sutures for clear corneal incisions in this animal ex vivo model.

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