PURPOSE In the human body, the orbital muscle is a limited smooth-muscle tissue extending between hard tissues. To provide better understanding of its function, the authors re-examined its development in fetuses. METHODS Using 20 human fetuses (12-25 weeks of gestation), semiserial horizontal or sagittal paraffin sections were prepared at intervals of 20 to 100 μm. In addition to routine hist...

INTRODUCTION Graves' ophthalmopathy is characterized by an increase in the volume of orbital soft tissue contents and an associated increase in intraorbital pressure. Surgical expansion of bony orbital volume is therefore an effective method of treating moderate to severe exophthalmos. Numerous correlations between specific decompression procedures and reduction of proptosis have been made. The...

Aging of the lower eyelid involves a complex series of anatomic and physiologic changes that occur over time. Rejuvenation of the lower eyelid complex must systemically address the various contributions of soft tissue laxity, pseudoherniation of orbital fat, and loss of periorbital volume. This article outlines the evolution of our approach to lower eyelid blepharoplasty with a specific focus o...

PURPOSE To evaluate contrast enhancement of normal extraocular muscles in the orbit. METHODS Noncontrast and contrast-enhanced T1-weighted images of the orbit were acquired using a fat-suppression MR technique in eight patients with no orbital disease. Contrast enhancement of 64 extraocular muscles was evaluated and compared with that of 16 temporal muscles. RESULTS Compared with temporal m...

Our goal was to investigate the incidence of postoperative primary gaze diplopia in patients with thyroid-related orbitopathy (TRO) undergoing deep lateral wall orbital decompression surgery with intraconal fat debulking in the Jules Stein Eye Institute over a period of 4(1/4) years. Overall 201 orbital decompression surgeries were performed in 116 patients (23 males, 93 females). All surgeries...

BACKGROUND AND AIM This study aims at evaluating the reliability on specific multi-planar cone beam computer tomography (CBCT) reconstruction in the orbital floor fractures. METHODS CBCT examination of the mid-face fractures area involving the floor of the orbit was performed in a number of 93 trauma patients by two independent radiologists. Both radiologists assessed the axial, coronal and s...

PURPOSE Thyroid-related orbitopathy (TRO) is associated with inflammation, expansion of orbital fat, enlargement of extraocular muscles, and optic neuropathy (ON). We examined the effects of orbital decompression on the inflammatory and congestive signs of TRO in patients who underwent emergent orbital decompression. METHODS This retrospective, consecutive study included patients with ON from...

BACKGROUND AND PURPOSE Optic neuropathy (ON), a serious complication of Graves ophthalmopathy, is often subclinical and masked by symptoms of orbitopathy. We examined herein bony and soft-tissue CT features associated with ON, including an angular assessment of orbital apex capacity, and their usefulness in the risk prediction of ON. MATERIALS AND METHODS The CT scans of 41 patients with Grav...

OBJECTIVE To compare soft tissue and fat volumes in the supraorbital area of healthy patients and patients with thyroid-associated orbitopathy (TAO) using 3-dimensional reconstruction software. METHODS The superiolateral orbital area was delineated on a bony framework. Three-dimensional reconstruction and volumetric calculation of the retro-orbicularis oculi fat (brow fat), galeal fat (includ...