Related Experiment Video
Updated: Aug 17, 2025

08:17
Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo
Published on: September 22, 2017
19.4K
[Leber hereditary optic neuropathy: clinical picture and initial workup data].
1Service Urgences-neuro Ophtalmologie Hôpital Fondation Adolphe de Rothschild, Paris; Centre National d'ophtalmologie des 15-20, Paris.
Journal Francais D'Ophtalmologie
|December 18, 2022
Summary
Leber hereditary optic neuropathy (LHON) is a rare mitochondrial disease causing vision loss. Diagnosis involves genetic testing for mitochondrial mutations, with prognosis varying by mutation type.
Area of Science:
- Ophthalmology
- Genetics
- Mitochondrial Diseases
Context:
- Leber hereditary optic neuropathy (LHON) is a rare genetic disorder.
- It primarily affects central vision, leading to blindness.
- While typically seen in young men, it can affect any demographic.
Purpose:
- To outline the diagnostic pathway for LHON.
- To discuss the visual prognosis and influencing factors.
- To highlight essential supportive care strategies for LHON patients.
Summary:
- LHON diagnosis is suspected based on clinical presentation and family history.
- Definitive diagnosis requires genetic testing to identify specific mitochondrial DNA point mutations.
- Visual prognosis is generally poor but mutation-dependent.
Impact:
- Early and accurate diagnosis of LHON is crucial for appropriate management.
- Understanding the causative mutation aids in predicting visual outcomes.
- Comprehensive support, including genetic counseling and visual impairment services, is vital for affected individuals.
Keywords:
Leber hereditary optic neuropathyMaladie mitochondrialeMitochondrial diseaseNerf optiqueNeuropathie optique héréditaire de LeberOptic nerveOptical coherence tomography (OCT)Peripapillary telangiectasiasTomographie en cohérence optique (OCT)Télangiectasies péripapillairesMore Related Videos
Related Concept Videos
Glaucoma: Overview
677
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...
677
Photoreceptors and Visual Pathways
6.2K
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,...
6.2K
Open Angle Glaucoma: Treatment
518
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...
Drugs such as carbonic anhydrase inhibitors, α2- and...
518
Angle Closure Glaucoma: Treatment
609
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...
609

