Overview
A shifted lens can cause sudden blurry or double vision.
Children with Marfan syndrome need regular eye checks.
Symptoms
Common signs:
- Blurry or double vision
Less common
- Double vision
Look up a symptom: Blurry vision
When to get medical care
Call 911Sudden vision loss, a curtain over vision, or a painful red eye with vision changes: go to the ER.
Get care todayNew or worse symptoms, or symptoms with fever.
See a doctor soonSymptoms that last or keep coming back.
Causes
Genes, injury.
Who is more likely to get it
- Marfan syndrome
Possible complications
- Glaucoma: A loose lens can block fluid
- Retinal detachment: Higher risk
Diagnosis
A clinician asks about your symptoms and may order tests.
The exam
A physical exam.
Tests
Tests, if needed:
- Eye exam:
Treatment
Treatment depends on the cause and how severe it is.
Self-care
- Wear glasses or contacts as advised
Prevention
To lower your risk or prevent problems:
- Wear eye protection
Which doctor treats this
- Urgent care or the ER can treat it first. For minor problems, your primary care provider can help.
- They may send you to an ophthalmologist (eye doctor and surgeon) or an optometrist.
Living with it
Support groups and helplines
- Genetic and Rare Diseases Information Center (GARD): Free NIH information on rare diseases, including where to find experts and patient groups.
- National Organization for Rare Disorders (NORD): Patient groups, help finding care, and aid programs for rare diseases.
Back to school, work, or sports
- School or desk work is often OK within days. Jobs with lifting may need light duty for a while.
- Go back to sports only when your doctor says it's OK and you have full motion and strength without pain.
Children, pregnancy, and older adults
- People with Marfan syndrome: Higher risk.
Outlook
Surgery restores vision for many.
Getting ready for your visit
Bring a list of your symptoms and medicines.
What to bring
- A list of your medicines and supplements
- Notes on when symptoms started and what makes them better or worse
Questions to ask
- What's causing this?
- What treatment do you recommend?
- Do I need surgery?
Research studies
Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.
Search ClinicalTrials.gov for studies on Dislocated lens or missing lens of the eye
Sources
Last updated 2026-11-12.