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Living with Cataract 46 juvenile-onset

An early-onset eye condition with cloudy lenses and heart rhythm problems, caused by changes in the LEMD2 gene.

Understanding Cataract 46 juvenile-onset

Cataract 46, juvenile-onset, is an early-onset cataract (clouding of the eye's lens) not linked to other syndromes and caused by a change in the LEMD2 gene.

GARD lists a heart rhythm problem (arrhythmia) among its common signs, along with cataract that starts in childhood or the teen years.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Cataract that starts at a young age (juvenile cataract)
  • Heart rhythm problems (arrhythmia)

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with rare disease patient organizations for support
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can LEMD2 genetic testing confirm the diagnosis?
Do I need heart rhythm tests, even without symptoms?
When might cataract surgery be needed?

Quick facts

InheritanceAutosomal Recessive

A change in the LEMD2 gene causes this condition. It is inherited in an autosomal recessive way, so a child inherits a changed copy of the gene from each parent.

Also known as: cataract 46, juvenile-onset, with or without arrhythmic cardiomyopathy; cataracts, autosomal recessive; ctrct46; early-onset non-syndromic cataract caused by mutation in lemd2; juvenilae cataract hutterite type; lemd2 early-onset non-syndromic cataract

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cataract 46 juvenile-onsetGARD ID 1150 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Cataract 46 juvenile-onset.

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