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Living with Macular corneal dystrophy

A rare inherited eye condition in which the clear front of the eye becomes cloudy and vision can get much worse.

Understanding Macular corneal dystrophy

Macular corneal dystrophy is a rare inherited eye condition that clouds the cornea, the clear front layer of the eye.

It causes hazy, cloudy patches in both eyes. Over time it can cause serious loss of vision. It can start at any time in life.

Signs & symptoms

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

  • Cloudy cornea
  • Marked vision loss
  • Tiny cloudy spots on the cornea
  • Thin cornea
  • Corneal crystals
  • Repeated breakdown of the eye's clear surface (corneal erosions)

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

    Specialists who may be involved include eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in CHST6 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

Care & treatment

Care team
Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
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 Corneal Dystrophy Foundation
  • 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
How often should my eyes be checked as the cornea changes?
Is CHST6 genetic testing helpful for my family?
What options are there if vision gets worse?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Recessive
GenesCHST6

Changes in the CHST6 gene cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: corneal dystrophy groenouw type ii; fehr corneal dystrophy; groenouw type ii corneal dystrophy; macular corneal dystrophy type i; macular dystrophy, corneal, 1; mcd

Patient organizations

Source: NIH GARD · Macular corneal dystrophyGARD ID 6953 · 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 Macular corneal dystrophy.

Explore the Macular corneal dystrophy blog

Explore research for Macular corneal dystrophy

Explore actively recruiting Macular corneal dystrophy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Macular corneal dystrophy with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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