How do I know if I have Coats Disease?

Coats Disease is primarily identified through a clinical eye examination that reveals characteristic telangiectatic (abnormal, dilated) blood vessels in the retina, often resulting in exudation or fluid buildup.

Recognizing the Signs

Because Coats Disease is often unilateral—meaning it affects only one eye—it can be difficult to detect, especially in children who may not complain of vision changes. Early indicators often include a "white pupil" (leukocoria) seen in photographs where the flash reflects off the abnormal blood vessels, or a sudden onset of strabismus (crossed eyes). If you or your child experience a noticeable decrease in vision, frequent squinting, or a sudden change in eye alignment, it warrants a professional investigation.

When to See a Specialist

If you suspect Coats Disease, you should schedule an appointment with an ophthalmologist, preferably a retina specialist. When speaking with your doctor, be direct: "I am concerned about symptoms that might indicate retinal vascular abnormalities, such as Coats Disease. Could you perform a dilated fundus examination to assess the health of my retina?"

Diagnostic Tests and Red Flags

The gold standard for diagnosis is a dilated eye exam, which allows the physician to view the back of the eye. If findings are unclear, your doctor may request optical coherence tomography (OCT) or fluorescein angiography (FA) to map the extent of the vascular leakage characteristic of Coats Disease. If you notice a sudden, significant loss of vision, intense eye pain, or a persistent white glow in the pupil, please seek urgent medical evaluation, as these can indicate advanced stages or complications like secondary glaucoma.

Self-Advocacy

If a primary care provider dismisses your concerns, remember that you are the best observer of your own health. You have the right to request a referral to a pediatric or retinal ophthalmologist. You might say, "Given that Coats Disease is a rare condition that is often missed in general screenings, I would feel much more reassured by a specialist's assessment." Distinguishing this from normal variation is crucial; while minor vision fluctuations are common, the progressive vascular leakage of this disease is not, and it requires specialized monitoring.

Medical Disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• Orphanet: The portal for rare diseases and orphan drugs


• The Jack McGovern Coats' Disease Foundation