Ophthalmology
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Case Reports
Orbital computed tomographic characteristics of globe subluxation in thyroid orbitopathy.
Axial globe subluxation may complicate thyroid orbitopathy. This acute event is defined by anterior displacement of the globe equator beyond the orbital rim, lid retraction behind the equator, and tethering of the optic nerve. The authors explored the factors leading to spontaneous globe subluxation in patients with thyroid orbitopathy. ⋯ Globe subluxation in thyroid orbitopathy requires compliance of the orbital soft tissues and extensibility of the extraocular muscles. These are characteristics of type-I orbitopathy. The increased fat content results in more compliance of the soft tissues, and the normal caliber of the muscles allows them to become more extensible. This permits the acute contraction of the eyelids posterior to the equator of the globe. Patients with type-I orbitopathy and extensive proptosis may be at relatively greater risk of having globe subluxation develop.
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Randomized Controlled Trial Comparative Study Clinical Trial
A randomized clinical trial of combined topical-intracameral anesthesia in cataract surgery.
To evaluate the level of patient discomfort during phacoemulsification and implantation of a foldable intraocular lens (IOL) while under topical lidocaine, alone or in combination with intracameral lidocaine. ⋯ Although topical lidocaine alone provides adequate anesthesia for phacoemulsification and implantation of a foldable IOL, combined topical and intracameral administration of lidocaine can further minimize intraoperative discomfort.