Crystalline Lens Subluxation

Partial displacement of the eye's lens

Written by: Saygı Hospital Health Guide Editorial Board

Last updated: June 9, 2026

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Göz Hastalıkları department. Book Appointment →

What is Crystalline Lens Subluxation?

Crystalline lens subluxation (ectopia lentis) is the partial displacement of the eye's lens due to weakening or rupture of the zonular fibers that suspend the lens at its equator. It can be associated with systemic diseases such as Marfan syndrome, homocystinuria, Weill-Marchesani syndrome, and Ehlers-Danlos syndrome. Trauma is also a common cause. In advanced cases the lens can become completely dislocated (luxation).

Symptoms

Blurred vision and refractive change

Monocular diplopia (double vision in one eye)

Iridodonesis (trembling of the iris)

Phacodonesis (trembling of the lens)

Increased myopia or new astigmatism

Risk Factors

Marfan syndrome

Homocystinuria

Eye trauma

Pseudoexfoliation syndrome

Previous eye surgery

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

If a sudden change in vision is noticed
If double vision starts in one eye
If a known connective tissue disease is present

Treatment Methods

Refractive correction with glasses or contact lenses

Lens extraction (in advanced cases)

Scleral-fixated intraocular lens implantation

Iris-claw intraocular lens

Multidisciplinary management of the systemic disease

Which Department to Visit?

You can visit our Göz Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Göz Hastalıkları Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.