Surgically Induced Changes in Corneal Viscoelastic Properties After 23-Gauge Pars Plana Vitrectomy Using Ocular Response Analyzer

Seymenoğlu, Göktuğ; Uzun, Özgür; Başer, Esin

doi:10.3109/02713683.2012.707269

Cited by 18 publications

(17 citation statements)

References 25 publications

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“…Here, analysis of eyes that had prior laser or surgical procedures was limited to those who had undergone such procedures >3 months before enrollment. A growing body of evidence shows that for eyes that have undergone phacoemulsification, there are no residual effects on corneal biomechanical parameters beyond the 3-month postoperative period [30][31][32][33]. Similarly, in line with the data shown in our study, Hassan et al 41 demonstrate that after 3 months, Corvis measurements including highest concavity time return to baseline.…”

supporting

confidence: 94%

“…Prior studies have demonstrated that there are no detectable changes in corneal biomechanical parameters as a result of intraocular surgery, including phacoemulsification, beyond the 3-month postoperative period. [30][31][32][33] All outputs were reviewed to ensure that films were not interrupted by eyelid movements, and readings were not disrupted by eyelash impact on the corneal surface. Corvis measurements were obtained in duplicates and results were averaged, to minimize effects of test-retest variability noted in prior studies.…”

Section: Subjectsmentioning

confidence: 99%

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Novel Parameter of Corneal Biomechanics That Differentiate Normals From Glaucoma

Lee

Chang

Wong

et al. 2016

Journal of Glaucoma

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supporting

confidence: 94%

Section: Subjectsmentioning

confidence: 99%

Novel Parameter of Corneal Biomechanics That Differentiate Normals From Glaucoma

Lee

Chang

Wong

et al. 2016

Journal of Glaucoma

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“…; Seymenoğlu et al. ). Corneal hysteresis significantly reduced after clear corneal cataract surgery, and it was returned preoperative level approximately 14 days later in a study (Kandarakis et al.…”

Section: Discussionmentioning

confidence: 97%

Evaluation of corneal biomechanical properties using an ocular response analyser to examine aphakic and pseudophakic patients after congenital cataract surgery

Şimşek

Soba²,

Tirhiş³

et al. 2015

Acta Ophthalmologica

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ABSTRACT.Purpose: We evaluated corneal biomechanical properties in aphakic and pseudophakic patients after congenital cataract surgery and compared the data with those of age-matched normal subjects. Methods: We included 43 eyes of 43 aphakic or pseudophakic patients treated via congenital cataract surgery. As controls, 42 healthy age-and sex-matched subjects were enrolled. After a complete ophthalmic examination, central corneal thickness (CCT) and intraocular pressure (IOP) were determined. Corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated IOP (IOPcc) and Goldmann-correlated IOP (IOPg) were recorded using an ocular response analyser. Results: In the study group, 18 eyes were aphakic and 25 eyes pseudophakic. We found a significant difference in CCT between the aphakic, pseudophakic and control groups (p < 0.001). No significant among-group differences were detected in CH or CRF (p > 0.05). We found significant differences in IOPcc, IOPg and IOP measured with Goldmann applanation tonometry (IOP GAT ) between the study and control groups (p < 0.001). In contrast, we found no significant differences within the two study groups in terms of these three IOP values (p > 0.05). Conclusion: Although CCT increased after congenital cataract surgery, corneal biomechanical parameters, including CH and the CRF, were not affected by such surgery. Determination of the IOPcc did not provide any additional information on true IOP, which was independent of CCT in both aphakic and pseudophakic patients after congenital cataract surgery.

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“…Some biomechanical changes have been reported after scleral procedures, but such a relationship has not been investigated for strabismus surgery before (17). Two studies have investigated the effects of scleral procedures on corneal biome-chanical properties before Seymenoğlu et al (18) who evaluated 23-gauge transconjunctival sutureless vitrectomy (23-G TSV) and Ruiz-De-Gopegui et al (19) who investigated the effects of encircling scleral buckle (SB).…”

Section: Discussionmentioning

confidence: 99%

To Evaluate Corneal Biomechanical Changes after Strabismus Surgery with Ocular Response Analyzer

Aygıt¹

2018

Beyoglu Eye J

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Objectives: Corneal biomechanical changes were also suspected and investigated after some scleral procedures but not after strabismus surgery. In this study, we aimed to evaluate corneal biomechanical changes following strabismus procedures with ocular response analyzer. Methods: This study was a retrospective case series. Corneal biomechanical properties were assessed using the ocular response analyzer (ORA) (ORA, Reichert Inc., Depew, New York, USA) before and 6 months after the surgery in 67 eyes of 67 patients performing strabismus surgery. Pre-and post-operative changes in corneal hysteresis (CH) and corneal resistance factor (CRF) outcomes were examined. Results: The study group were divided into Groups 1 and 2 for the performed surgery. Pre-and post-operative CRFs were showed statistically significant differences in Groups 1 and 2. In Group 1, the mean CH was 11.7±2.4 mmHg at preoperative and 12.3±2.5 mmHg at postoperative. The differences were not statistically significant in Group 1. Conclusion: This is the first study aimed to evaluate the corneal biomechanical changes after strabismus surgery. and CRF were found to statistically significance at 6 month after strabismus surgery.

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Surgically Induced Changes in Corneal Viscoelastic Properties After 23-Gauge Pars Plana Vitrectomy Using Ocular Response Analyzer

Abstract: Corneal viscoelastic properties are not significantly influenced in the late postoperative period by 23-G TSV which is a minimal invasive vitreoretinal surgical technique.

Cited by 18 publications

References 25 publications

Novel Parameter of Corneal Biomechanics That Differentiate Normals From Glaucoma

Novel Parameter of Corneal Biomechanics That Differentiate Normals From Glaucoma

Evaluation of corneal biomechanical properties using an ocular response analyser to examine aphakic and pseudophakic patients after congenital cataract surgery

To Evaluate Corneal Biomechanical Changes after Strabismus Surgery with Ocular Response Analyzer

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