Objective: To evaluate the impact of Medpor implantation on extraocular muscle function, eye movement disorders, and diplopia in patients with orbital wall fracture.
Methods: A retrospective study was conducted on 98 patients (98 eyes) who underwent Medpor implantation surgery at Bethune International Peace Hospital from January 2019 to December 2022. The degree of eyeball enophthalmos and total fracture area in patients before and after surgery, as well as orbital volume were measured. The relationship between enophthalmos severity and total fracture area was analyzed. Changes in extraocular muscle function, eye movement, and diplopia were assessed before and after surgery.
Results: Before operation, enophthalmos severity was correlated with the total fracture area (r = 0.323, P = 0.001). After surgery, there was no significant correlation (r = -0.053, P = 0.630). Compared with preoperative measurements, both orbital volume and the volume difference improved significantly after surgery (both P < 0.05). Among the patients who received surgery within 3 weeks, the cure rates for rectus muscle restriction and extraocular muscle paralysis were 94.12% and 100.00%, respectively, higher than those in patients who underwent surgery after 3 weeks (67.27% and 65.62%) (P < 0.05). In comparison of preoperative conditions, notable improvements were observed in both ocular motility disorders and diplopia after operation (both P < 0.05). The total improvement rates in ocular motility disorders at 1, 3 and 6 months of follow-up were 84.69%, 90.82%, 96.94%, respectively, while these rates in diplopia were 89.79%, 91.84% and 95.92%, respectively. Abnormal maxillofacial sensations also improved significantly at 1-, 3-, and 6-month post-surgery (all P < 0.05).
Conclusions: Medpor implantation effectively restores extraocular muscle function in patients with orbital wall fractures, significantly alleviating diplopia, eye movement disorders, and maxillofacial abnormalities.
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http://dx.doi.org/10.62347/MIFA3686 | DOI Listing |
Nucl Med Commun
February 2025
Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, China.
Purpose: To study the feasibility and value of assessing patients with Graves' orbitopathy (GO) in 99mTc-diethylenetriamine pentaacetic acid (DTPA) orbital single photon emission computed tomography/computed tomography (SPECT/CT) with extraocular muscle maximum standardized uptake value (SUVmax).
Methods: A total of 235 patients underwent 99mTc-DTPA orbital SPECT/CT, including 176 patients with GO and 59 patients with Graves' disease (GD) as controls. The SUVmax of extraocular muscles, including right medial rectus muscle (RMR), right lateral rectus muscle (RLR), left medial rectus muscle (LMR), left lateral rectus muscle (LLR), was compared between groups, correlation analyses with clinical activity scores (CAS) and serological indices was performed, and the diagnostic efficacy was evaluated using receiver operating characteristic curves.
Ophthalmic Plast Reconstr Surg
January 2025
Division of Orbital and Ophthalmic Plastic Surgery, Jules Stein Eye Institute, University of California, Los Angeles, California, U.S.A.
Purpose: Phenylephrine testing prior to Müller muscle conjunctival resection has traditionally been used to predict postoperative outcomes. The purpose of this study is to determine if preoperative phenylephrine testing impacts postoperative changes in eyelid position.
Methods: In this multicenter cross-sectional cohort study, 270 eyelids of participants with involutional ptosis and levator function >12 mm who underwent Müller muscle conjunctival resection were divided into 2 comparison groups.
Science
January 2025
Department of Otolaryngology, Department of Neuroscience and Physiology, and the Neuroscience Institute, NYU Grossman School of Medicine, New York, NY, USA.
Vertebrates stabilize gaze using a neural circuit that transforms sensed instability into compensatory counterrotation of the eyes. Sensory feedback tunes this vestibulo-ocular reflex throughout life. We studied the functional development of vestibulo-ocular reflex circuit components in the larval zebrafish, with and without sensation.
View Article and Find Full Text PDFZhonghua Yan Ke Za Zhi
January 2025
Tianjin Eye Hospital, Nankai University Affiliated Eye Hospital, Clinical College of Ophthalmology of Tianjin Medical University, Tianjin Eye Institute, Tianjin Key Laboratory of Ophthalmology and Visual Science, Tianjin300020, China.
To explore the efficacy of the modified lateral rectus muscle splitting and nasal transposition surgery in treating large-angle exotropia caused by oculomotor nerve palsy and its impact on ocular motility. Retrospective case series study. Data was collected from patients diagnosed with large-angle exotropia due to oculomotor nerve palsy and treated by modified lateral rectus muscle splitting and nasal transposition surgery at the Tianjin Eye Hospital from January 2020 to October 2023.
View Article and Find Full Text PDFZhonghua Yan Ke Za Zhi
January 2025
Department of Ophthalmology, the First Affiliated Hospital of Nanjing Medical University, Nanjing210029, China.
Intermittent exotropia (IXT) is the most common type of strabismus, with surgical interventions standing as its main therapeutic modality. In recent years, with the rapid development of the strabismus and pediatric ophthalmology subspecialties, surgical correction for IXT has become a routine practice across numerous institutions in China. However, the surgical success rate is not high and tends to decline with longer follow-up periods.
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