Assessment of Laser Parameters to Improve Lid Tension—A Proof of Concept towards Lasercanthoplasty

Christoph Holtmann, Witt Joana, Schilcher Alexandra, Amar Advakovic, Alessa Hutfilz, Dirk Theisen-Kunde, Katharina Wiebe-Ben Zakour, Knop Erich, Gerling Gerd


Background: Preliminary clinical work indicates that increasing eyelid tension improves the function of the meibomian glands. The aim of this study was to optimize laser parameters for a minimally invasive laser treatment to increase eyelid tension by coagulation of the lateral tarsal plate and canthus. Methods: Experiments were performed on a total of 24 porcine lower lids post mortem, with six lids in each group. Three groups were irradiated with an infrared B radiation laser. Laser-induced lower eyelid shortening was measured and the increase in eyelid tension was assessed with a force sensor. A histology was performed to evaluate coagulation size and laser-induced tissue damage. Results: In all three groups, a significant shortening of the eyelids after irradiation was noticed (p < 0.0001). The strongest effect was seen with 1940 nm/1 W/5 s, showing −15.1 ± 3.7% and −2.5 ± 0.6 mm lid shortening. The largest significant increase in eyelid tension was seen after placing the third coagulation. Conclusion: Laser coagulation leads to lower eyelid shortening and an increase in lower eyelid tension. The strongest effect with the least tissue damage was shown for laser parameters of 1470 nm/2.5 W/2 s. In vivo studies of this effect have to confirm the efficacy of this concept prior to clinical application.
Original languageEnglish
Article number4757
JournalInternational Journal of Molecular Sciences
Issue number5
Pages (from-to)4757
Publication statusPublished - 01.03.2023

DFG Research Classification Scheme

  • 308-01 Optics, Quantum Optics, Atoms, Molecules, Plasmas


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