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Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
Glaucoma: Overview01:25

Glaucoma: Overview

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...
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

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...
Transient Ischemic Attack l: Introduction01:26

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A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
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Open Angle Glaucoma: Treatment

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Drugs such as carbonic anhydrase inhibitors, α2- and...

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Related Experiment Video

Updated: Jun 1, 2026

Inducement and Evaluation of a Murine Model of Experimental Myopia
07:20

Inducement and Evaluation of a Murine Model of Experimental Myopia

Published on: January 22, 2019

[Transient myopia].

A F Borkenstein1, S Hausberger, C Mayer

  • 1Univ.-Augenklinik Graz, Auenbruggerplatz 4, 8036, Graz, Österreich. crustalith@gmx.at

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|May 19, 2011
PubMed
Summary
This summary is machine-generated.

Sudden vision loss, though rarely due to transient myopia, may signal serious systemic diseases. Prompt diagnosis in ophthalmology is critical for identifying potentially life-threatening conditions.

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Last Updated: Jun 1, 2026

Inducement and Evaluation of a Murine Model of Experimental Myopia
07:20

Inducement and Evaluation of a Murine Model of Experimental Myopia

Published on: January 22, 2019

Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
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Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model
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Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model

Published on: April 3, 2016

Area of Science:

  • Ophthalmology
  • Internal Medicine
  • Diagnostic Medicine

Background:

  • Transient myopia is an exceptionally rare visual symptom.
  • Sudden vision deterioration can be linked to systemic diseases.

Observation:

  • Ophthalmological diagnosis is crucial for patients experiencing sudden vision changes.
  • Systemic conditions may manifest with ocular symptoms.

Findings:

  • The initial assessment in an ophthalmological setting is decisive.
  • Rare symptoms like transient myopia warrant consideration of underlying systemic pathology.

Implications:

  • Early and accurate diagnosis can prevent severe health consequences.
  • Interdisciplinary collaboration between ophthalmology and internal medicine is vital.