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Related Concept Videos

Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

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Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence...
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Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

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Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor,...
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Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
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Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
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Hyperthyroidism II: Pathophysiology01:27

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Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH...
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Related Experiment Video

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Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
05:41

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Aqueous misdirection in thyroid eye disease.

Devjyoti Tripathy1, Aparna Rao2, Aniruddha Banerjee3

  • 1Oculoplasty Services, LV Prasad Institute, Bhubaneswar, Odisha, India.

BMJ Case Reports
|November 22, 2014
PubMed
Summary
This summary is machine-generated.

Secondary glaucoma in thyroid eye disease (TED) can stem from various causes. This case highlights aqueous misdirection during the inactive TED stage, emphasizing the need for thorough diagnosis to guide treatment.

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Area of Science:

  • Ophthalmology
  • Endocrinology

Background:

  • Thyroid eye disease (TED) can lead to secondary glaucoma.
  • Common mechanisms include elevated episcleral venous pressure or mechanical trabecular meshwork damage due to mucopolysaccharide deposition.

Observation:

  • A unique case of secondary glaucoma in the inactive stage of TED presented with aqueous misdirection in the left eye.
  • This contrasts with the typically mechanical and active-stage presentation of TED-related elevated intraocular pressure (IOP).

Findings:

  • The case demonstrates that aqueous misdirection can be a cause of elevated IOP in the inactive phase of TED.
  • This mechanism is distinct from the more commonly cited mechanical causes.

Implications:

  • Accurate diagnosis of the underlying cause of elevated IOP in TED is crucial.
  • Tailoring treatment based on the specific mechanism, such as aqueous misdirection, is essential for effective management of secondary glaucoma in TED.