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Related Concept Videos

Open Angle Glaucoma: Treatment01:27

Open Angle Glaucoma: Treatment

505
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.
Drugs such as carbonic anhydrase inhibitors, α2- and...
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Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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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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Glaucoma: Overview01:25

Glaucoma: Overview

653
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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Retinal Pigment Epithelium Transplantation in a Non-human Primate Model for Degenerative Retinal Diseases
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Vitrectomy for Symptomatic Asteroid Hyalosis.

Elizabeth Marlow1, Tarek Hassan1,2, Lisa Faia1,2

  • 1Associated Retinal Consultants PC, Royal Oak, MI, USA.

Journal of Vitreoretinal Diseases
|April 3, 2023
PubMed
Summary
This summary is machine-generated.

Asteroid hyalosis (AH) can cause sudden vision loss due to posterior vitreous separation. Pars plana vitrectomy effectively restores vision in these cases.

Keywords:
asteroid hyalosispars plana vitrectomyposterior vitreous detachment

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Area of Science:

  • Ophthalmology
  • Retinal Surgery

Background:

  • Asteroid hyalosis (AH) is characterized by lipid deposits in the vitreous.
  • Posterior vitreous separation (PVS) can lead to acute vision loss in AH patients.

Observation:

  • Six patients with AH and vision loss due to PVS underwent pars plana vitrectomy.
  • Visual acuity (VA) was monitored for 3 months post-surgery.

Findings:

  • Preoperative VA averaged 20/150, with a mean logMAR decrease of 0.70.
  • Post-vitrectomy, VA improved significantly, reaching 20/20 to 20/200 (mean 20/35) within 3 months.

Implications:

  • Pars plana vitrectomy is a potential curative treatment for vision loss associated with AH and PVS.
  • Surgical intervention can restore functional vision in affected individuals.