Overview
Isolated microspherophakia is a rare eye condition where the lens inside the eye is abnormally small and round (sphere-shaped) instead of its normal oval shape. The lens sits behind the pupil and helps focus light so you can see clearly. When the lens is too small and spherical, it does not focus light properly, which causes problems with vision. The word 'isolated' means this condition affects only the eyes, without being part of a broader syndrome or other health problems. The most common symptom is severe nearsightedness (myopia), meaning it is hard to see things far away. Because the lens is smaller than normal, it can move around more than it should inside the eye. This movement can block the normal flow of fluid inside the eye, causing pressure to build up — a serious complication called glaucoma. In some cases, the lens can slip out of its normal position (lens dislocation), which can suddenly worsen vision. Treatment focuses on correcting vision with glasses or contact lenses and monitoring eye pressure closely. In more serious cases, surgery to remove the abnormal lens may be needed. Regular check-ups with an eye specialist are very important to catch complications early and protect long-term vision.
Key symptoms:
Severe nearsightedness (difficulty seeing things far away)Small, round lens inside the eyeHigh eye pressure (glaucoma)Lens slipping out of its normal position (lens dislocation or subluxation)Blurry or distorted visionSensitivity to lightHeadaches related to high eye pressureSeeing halos around lightsReduced vision that worsens over time if untreatedPossible sudden vision loss if the lens dislocates into the front chamber of the eye
Autosomal recessive
Passed on when both parents carry the same gene change; often skips generations
Childhood
Begins in childhood, roughly ages 1 to 12
Treatments
No FDA-approved treatments are currently listed for Isolated microspherophakia.
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Specialists
View all specialists →No specialists are currently listed for Isolated microspherophakia.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Isolated microspherophakia.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.Which gene is most likely causing this condition in my child, and should the whole family be tested?,How often does my child need eye pressure checks, and what level of pressure should trigger an urgent visit?,At what point would you recommend surgery to remove the lens, and what are the risks?,Are there any sports or activities my child should avoid because of the risk of lens dislocation?,What are the long-term vision outcomes for children who have surgery versus those managed with glasses and eye drops?,Should we see a genetic counselor to understand the chances of future children being affected?,What are the signs that the lens has moved, and what should we do if that happens?
Common questions about Isolated microspherophakia
What is Isolated microspherophakia?
Isolated microspherophakia is a rare eye condition where the lens inside the eye is abnormally small and round (sphere-shaped) instead of its normal oval shape. The lens sits behind the pupil and helps focus light so you can see clearly. When the lens is too small and spherical, it does not focus light properly, which causes problems with vision. The word 'isolated' means this condition affects only the eyes, without being part of a broader syndrome or other health problems. The most common symptom is severe nearsightedness (myopia), meaning it is hard to see things far away. Because the lens
How is Isolated microspherophakia inherited?
Isolated microspherophakia follows a autosomal recessive inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Isolated microspherophakia typically begin?
Typical onset of Isolated microspherophakia is childhood. Age of onset can vary across affected individuals.