Evaluation of orbital soft tissue biomechanical parameters in patients with thyroid eye disease using the non-contact Corvis ST

Rad, Azin Khodabakhshi; Zarei‐Ghanavati, Siamak; Sabermoghaddam, Aliakbar; Shahri, Seyed Hosein Ghavami; Bakhtiari, Elham; Kiarudi, Mohammad Yaser

doi:10.1007/s10792-023-02770-7

Int Ophthalmol

2023

DOI: 10.1007/s10792-023-02770-7

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Evaluation of orbital soft tissue biomechanical parameters in patients with thyroid eye disease using the non-contact Corvis ST

Azin Khodabakhshi Rad

Siamak Zarei‐Ghanavati

Aliakbar Sabermoghaddam

et al.

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2024

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Biomechanical changes of the cornea after orbital decompression in thyroid-associated orbitopathy measured by corvis ST

Soleymanzadeh,

Rafizadeh,

Ghochani

et al. 2024

Sci Rep

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This study aims to investigate the changes in ocular biomechanical factors in patients with inactive thyroid eye disease (TED) who undergo orbital decompression surgery. This observational prospective study include 46 eyes of 31 patients with inactive TED undergoing orbital decompression at a tertiary university hospital from October 2021 to September 2023. All participants underwent a full ophthalmic examination, and a biomechanical examination was performed using corvis ST at baseline, 1 month, and 3 months postoperatively. The study participants had a mean age of 45 ± 11.6 years, and 58.1% of them were female. The second applanation time (A2T) increased from baseline to postoperative month 1 and continued to increase to postoperative month 3 (P < 0.001). The first applanation velocity (A1V), highest concavity (HC) peak distance, and pachymetry parameters also increased from postoperative month 1 to postoperative month 3 (P = 0.035, P = 0.005, and P = 0.031, respectively). The HC time increased from baseline to postoperative month 3 (P = 0.027). Other changes were statistically insignificant. The P-values were adjusted according to biomechanically corrected intraocular pressure (bIOP). Baseline Hertel significantly influenced A2 time (P < 0.001). Our findings suggest that ocular biomechanical parameters may change following decompression surgery in patients with inactive TED. Specifically, an increase in A2T, A1V, and HC peak distance suggests a decrease in corneal stiffness, although the increased HC time contradicts this. It is recommended to postpone keratorefractive or intraocular lens implantation surgeries until corneal biomechanics stabilize after decompression surgery for optimal results.

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Biomechanical changes of the cornea after orbital decompression in thyroid-associated orbitopathy measured by corvis ST

Soleymanzadeh,

Rafizadeh,

Ghochani

et al. 2024

Sci Rep

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show abstract

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Evaluation of orbital soft tissue biomechanical parameters in patients with thyroid eye disease using the non-contact Corvis ST

Cited by 1 publication

References 14 publications

Biomechanical changes of the cornea after orbital decompression in thyroid-associated orbitopathy measured by corvis ST

Biomechanical changes of the cornea after orbital decompression in thyroid-associated orbitopathy measured by corvis ST

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