THE BELGIAN OPHTHALMIC ASSOCIATIONS
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| Type de présentation | E-poster |
| Titre | Corneal biomechanics after implantation of intracorneal ring segments (ICRS) in keratoconus |
| But | To analyze changes in corneal biomechanical properties after implantation of intracorneal ring segments (ICRS) in keratoconus (KC). |
| Méthodes | This retrospective single-center study included 118 patient eyes that underwent femtosecond laser ICRS implantation for KC. Biomechanical analysis was performed preoperatively and after 6 months, 1 and 2 years using Ocular Response Analyzer®, with determination of Corneal resistance factor (CRF), Corneal hysteresis (CH), as well as by Corvis ST®, with determination of stiffness parameter A1 (SP-A1), Ambrosio's relational thickness to the horizontal profile (Arth), integrated radius (IR) and deformation amplitude-ratio (DA-ratio). |
| Résultats | The CRF decreased significantly postoperatively (5.8 ± 1.7 mmHg) compared to preoperatively (6.8 ± 3.7 mmHg; p < 0.001), and increased again during follow-up (6.2 ± 1.9 mmHg; p = 0.005), without regaining preoperative values. CH did not change significantly. SP-A1 (p = 0.013) and IR (p = 0.049) increased significantly after ICRS implantation. Arth decreased significantly from 190 ± 88 to 157 ± 108 (p < 0.001). However, there was no significant postoperative change for DA-ratio. |
| Conclusion | Corneal biomechanical properties showed inconsistent changes after ICRS implantation. Classical corneal biomechanical parameters (using single central air-puff tonometers) do not seem to be suitable for follow-up after ICRS implantation. |
| Conflit d'intérêt | Non |
Auteur 1
| Nom | HAMON |
| Initiales | L |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 2
| Nom | Pfahl |
| Initiales | LJ |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 3
| Nom | Flockerzi |
| Initiales | E |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 4
| Nom | Berger |
| Initiales | T |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 5
| Nom | Langenbucher |
| Initiales | A |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 6
| Nom | Seitz |
| Initiales | B |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |
Auteur 7
| Nom | Daas |
| Initiales | L |
| Institut | Saarland University Medical Center |
| Ville | Homburg, Germany |