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Díaz-Barreda MD, Sánchez-Marín I, Boned-Murillo A, Pérez-Navarro I, Martínez J, Pardina-Claver E, Pérez D, Ascaso FJ, Ibáñez J. Modification of Corneal Biomechanics and Intraocular Pressure Following Non-Penetrating Deep Sclerectomy. J Clin Med 2022; 11:jcm11051216. [PMID: 35268307 PMCID: PMC8911357 DOI: 10.3390/jcm11051216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/16/2022] [Accepted: 02/21/2022] [Indexed: 12/18/2022] Open
Abstract
Changes in the cornea can influence outcomes in patients with primary open-angle glaucoma (POAG). We aimed to evaluate the relevance of changes in corneal biomechanics and intraocular pressure (IOP) in patients undergoing non-penetrating deep sclerectomy (NPDS) with the Esnoper V2000 implant® (AJL Ophthalmic S.A., Gasteiz, Spain). We included 42 eyes of 42 patients with POAG scheduled for NPDS with the Esnoper V2000 implant. Biomechanical properties were measured by Ocular Response Analyzer® G3 (ORA; Reichert Inc., Depew, NY, USA). Corneal hysteresis (CH), corneal resistance factor (CRF), corneal compensated IOP (IOPcc), and Goldmann-correlated IOP (IOPg) were measured the day before surgery and on day 1, 7, and 30 and 2 and 3 months after surgery. CH initially increased, fell below the presurgical value at 30 days after the surgery, and increased again at 2 and 3 months. CRF, IOPcc, and IOPg decreased on the first day after surgery, then followed a trend of increasing but stayed below pre-surgery levels. All values reached statistical significance. While observed changes in corneal biomechanics after NPDS and Esnoper V2000 implant were significant, more studies are needed if we are to understand their influence on corneal biomechanics and their clinical relevance in POAG.
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Affiliation(s)
- María Dolores Díaz-Barreda
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
- Department of Surgery, School of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
- Aragon Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- Correspondence: (M.D.D.-B.); (F.J.A.); Tel.: +34-629-863-827 (M.D.D.-B.); +34-686-574-389 (F.J.A.)
| | - Ignacio Sánchez-Marín
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
| | - Ana Boned-Murillo
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
- Department of Surgery, School of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
- Aragon Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
| | - Itziar Pérez-Navarro
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
| | - Juana Martínez
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
| | - Elena Pardina-Claver
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
| | - Diana Pérez
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
- Department of Surgery, School of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
- Aragon Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
| | - Francisco Javier Ascaso
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
- Department of Surgery, School of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
- Aragon Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
- Correspondence: (M.D.D.-B.); (F.J.A.); Tel.: +34-629-863-827 (M.D.D.-B.); +34-686-574-389 (F.J.A.)
| | - Juan Ibáñez
- Department of Ophthalmology, Hospital Clínico Universitario Lozano Blesa, 50009 Zaragoza, Spain; (I.S.-M.); (A.B.-M.); (I.P.-N.); (J.M.); (E.P.-C.); (D.P.); (J.I.)
- Department of Surgery, School of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
- Aragon Health Research Institute (IIS Aragón), 50009 Zaragoza, Spain
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Corneal biomechanical properties in different ocular conditions and new measurement techniques. ISRN OPHTHALMOLOGY 2014; 2014:724546. [PMID: 24729900 PMCID: PMC3960740 DOI: 10.1155/2014/724546] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 11/26/2013] [Indexed: 12/04/2022]
Abstract
Several refractive and therapeutic treatments as well as several ocular or systemic diseases might induce changes in the mechanical resistance of the cornea. Furthermore, intraocular pressure measurement, one of the most used clinical tools, is also highly dependent on this characteristic. Corneal biomechanical properties can be measured now in the clinical setting with different instruments. In the present work, we review the potential role of the biomechanical properties of the cornea in different fields of ophthalmology and visual science in light of the definitions of the fundamental properties of matter and the results obtained from the different instruments available. The body of literature published so far provides an insight into how the corneal mechanical properties change in different sight-threatening ocular conditions and after different surgical procedures. The future in this field is very promising with several new technologies being applied to the analysis of the corneal biomechanical properties.
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