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PubMed This is a summary of 58 peer-reviewed journal articles Updated
Neuro-Ophthalmology

Leber Hereditary Optic Neuropathy (LHON): An Actionable Patient Guide

At a Glance

Leber Hereditary Optic Neuropathy (LHON) is a rare, maternally inherited mitochondrial disease causing sudden, rapid loss of central vision. It rarely leads to total blindness, as peripheral vision is typically preserved. Management involves neuro-ophthalmologists and therapies like Idebenone.

Leber Hereditary Optic Neuropathy (LHON) is a rare genetic condition that primarily affects the central vision. Affecting roughly 1 in 27,000 to 45,000 people, it is the most common mitochondrial disease [1]. If you or a loved one are experiencing the sudden, rapid loss of central vision, the panic and uncertainty can be overwhelming.

First, take a deep breath. You are not alone, and it is vital to know that LHON rarely causes total, pitch-black blindness. The disease typically damages only your central vision, meaning you will likely retain your peripheral (side) vision.

This guide is designed to empower you with the knowledge to navigate your diagnosis and treatment. Because LHON is so rare, your local eye doctor may have very little experience with it. It is up to you to be informed and proactive.

We have organized this resource into key sections to guide you through your journey:

01

Symptoms, Progression & Warning Signs

Learn about Leber Hereditary Optic Neuropathy (LHON) symptoms, from early central vision loss and the acute phase, to LHON Plus signs and toxic triggers.

02

Why It Happens & Differentiating the Diagnosis

Learn the underlying causes of Leber Hereditary Optic Neuropathy (LHON) and how it differs from optic neuritis. Understand why it's painless and misdiagnosed.

03

Diagnosis, Genetics & Understanding Your Tests

Learn how Leber Hereditary Optic Neuropathy (LHON) is diagnosed. Understand targeted genetic testing, maternal inheritance, and how to read your OCT scans.

04

Treatment Options & Gene Therapy

Explore current treatment options for Leber Hereditary Optic Neuropathy (LHON). Learn how Idebenone and new gene therapies like Lumevoq work to restore vision.

05

Prognosis & Long-Term Management

Learn about Leber Hereditary Optic Neuropathy (LHON) prognosis. Understand visual recovery rates by mutation and how to protect your vision long-term.

Common questions in this guide

Does LHON cause total blindness?
No, LHON rarely causes total, pitch-black blindness. The disease typically damages only your central vision, meaning most patients will retain their peripheral or side vision.
How is LHON inherited?
LHON is a mitochondrial disease, which means it follows a pattern of maternal inheritance. The genetic mutations responsible for the condition are passed down exclusively from a mother to her children.
What kind of doctor should I see for LHON?
Because LHON is a rare condition, local eye doctors often have little experience with it. It is best to be evaluated by a neuro-ophthalmologist or at a medical center of excellence that specializes in mitochondrial diseases.
What treatments are available for LHON?
While LHON is a complex condition, current medical strategies include medications like Idebenone. Additionally, patients may be eligible for early-access programs or clinical trials investigating gene therapy.
Why is LHON often confused with other conditions?
The condition is often misdiagnosed as Multiple Sclerosis (MS) or Optic Neuritis because they share similar initial symptoms, such as sudden vision changes. Accurate diagnosis requires specific genetic testing and specialized eye scans like OCT.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.How many cases of LHON have you treated in the past year, and are you comfortable managing this rare condition?
  2. 2.Can you refer me to a neuro-ophthalmologist or a center of excellence that specializes in mitochondrial diseases?
  3. 3.Am I eligible for any current early-access programs or clinical trials for gene therapy?

Questions For You

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References

References (1)
  1. 1

    International Consensus Statement on the Clinical and Therapeutic Management of Leber Hereditary Optic Neuropathy.

    Carelli V, Carbonelli M, de Coo IF, et al.

    Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society 2017; (37(4)):371-381 doi:10.1097/WNO.0000000000000570.

    PMID: 28991104

This guide is for informational purposes only and does not replace professional medical advice. Always consult a neuro-ophthalmologist or specialist for diagnosing and managing Leber Hereditary Optic Neuropathy (LHON).

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