Acta Ophthalmol
Ophthalmology Department, Cairo University, Egypt Pathology Department, Cairo University, Egypt.
Published: March 2013
Purpose: To histopathologically evaluate the effect of cryopreserved human amniotic membrane (AM) transplant on preventing the development of postoperative adhesions after extraocular muscle surgery.
Methods: Ten albino rabbits were used. The superior rectus muscles were bilaterally resected. In right eyes, the muscle was wrapped with cryopreserved human AM (group AM). In left eyes, the muscle was not wrapped with AM and served as a control group (group C). The rabbits were killed, and the eyes were enucleated 6 weeks after surgery to perform histopathological examination.
Results: On histopathological examination, the AM was present in eight eyes, surrounded by periamniotic inflammation, with no adhesions detected between rectus muscle and sclera, conjunctiva and Tenon's capsule in the segment where the AM was present, but detected elsewhere. Adhesions were detected in the other two eyes of group AM, in which the AM was absent, and in all group C eyes. When comparing eye pairs of each rabbit, AM eyes showed significantly less adhesions between the muscle and sclera (p = 0.009) and between the muscle and Tenon's capsule and conjunctiva (p = 0.008), in the region of AM application, and significantly more foreign body inflammation (p = 0.031), than C eyes. The differences between AM and C eye pairs, in terms of conjunctival inflammation and vascularity and muscle fibrosis, were insignificant (p > 0.05).
Conclusions: Cryopreserved AM is effective in reducing postoperative extraocular muscle adhesions. Its application is, therefore, recommended during strabismus reoperations.
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http://dx.doi.org/10.1111/j.1755-3768.2012.02563.x | DOI Listing |
Orbit
January 2025
Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miami, Florida, USA.
Introduction: Rhabdomyosarcoma (RMS) is a common pediatric orbital malignancy but is extremely rare in adults. This study assesses clinical and radiographic features, management, and outcomes in adult orbital RMS patients with comparison to pediatric patients.
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Nucl Med Commun
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Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, China.
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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.
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Science
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Department of Otolaryngology, Department of Neuroscience and Physiology, and the Neuroscience Institute, NYU Grossman School of Medicine, New York, NY, USA.
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View Article and Find Full Text PDFZhonghua Yan Ke Za Zhi
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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.
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