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

Introduction In thyroid eye disease (TED), all ocular components and adnexa such as extraocular muscles, orbital adipose tissues, eyelids, and tear glands could be affected. This study aimed to study the orbital biomechanical parameters in patients with TED, in terms of differences with healthy indi...

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Bibliographic Details
Published in:International ophthalmology 2023-10, Vol.43 (10), p.3615-3621
Main Authors: Moeen Rad, Arman, Zarei-Ghanavati, Siamak, Sabermoghaddam, Aliakbar, Ghavami Shahri, Seyed Hosein, Bakhtiari, Elham, Kiarudi, Mohammad Yaser
Format: Article
Language:English
Subjects:
Adipose tissue
Biomechanics
Eye diseases
Eye movements
Intraocular pressure
Medicine
Medicine & Public Health
Muscles
Oculomotor system
Ophthalmology
Original Paper
Parameters
Soft tissues
Statistical analysis
Thyroid
Thyroid diseases
Thyroid gland
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Summary:Introduction In thyroid eye disease (TED), all ocular components and adnexa such as extraocular muscles, orbital adipose tissues, eyelids, and tear glands could be affected. This study aimed to study the orbital biomechanical parameters in patients with TED, in terms of differences with healthy individuals and correlation with clinical findings, using Corvis ST (CST, Oculus Wetzlar). Materials and methods In this study, 26 consecutive patients with TED were recruited. Demographic data were collected, and patients with TED were assessed for exophthalmos, intraocular pressure, and clinical activity score. Biomechanical response parameters of one randomly-chosen eye of each patient, including whole eye movement length (WEMl) and time (WEMt), were evaluated by the CST, and data were compared between patients and age- and gender-matched healthy controls. Results The mean age was 39.88 ± 11.61 years old for patients with TED and 34.38 ± 8.57 years old for the healthy subjects. Nine out of 26 patients with TED and nine of 26 healthy individuals were male. The median duration of thyroid disease was 36 ( IQR 54) months and the median duration of thyroid ophthalmopathy was 27 ( IQR 27) months. Four out of 26 patients (7.7%) had active disease. The mean WEMl was 206.15 ± 61.58 µm in the TED group and 254.23 ± 64.01 μm in the healthy group, the difference of which was statistically significant ( p  = 0.008). The median of WEMt was 20.90 (1.15) msec in the TED group and 21.45 (0.93) msec in the healthy group ( p  
ISSN:1573-2630
0165-5701
1573-2630
DOI:10.1007/s10792-023-02770-7