R R

What Is Choroidal Rupture?

Choroidal Rupture is a specific type of eye injury caused by blunt force trauma, such as being hit by a fist, a tennis ball, or an airbag. While the eye is a flexible sphere, the different layers of the eye have different tensile strengths. The sclera (the white outer shell) is tough and strong. The retina (the inner film) is elastic and stretchy. However, the layer sandwiched between them, known as Bruch's membrane, is calcified and brittle. When the eye is compressed by an impact, this brittle layer cannot stretch, so it snaps. This crack in the foundation is called a choroidal rupture.

Link to This Resource Page

Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.

To display this...

What Is Choroidal Rupture?

Choroidal Rupture is a specific type of eye injury caused by blunt force trauma, such as being hit by a fist, a tennis ball, or an airbag. While the eye is a flexible sphere, the different layers of the eye have different tensile strengths. The sclera (the white outer shell) is tough and strong. The retina (the inner film) is elastic and stretchy. However, the layer sandwiched between them, known as Bruch's membrane, is calcified and brittle. When the eye is compressed by an impact, this brittle layer cannot stretch, so it snaps. This crack in the foundation is called a choroidal rupture.

read more about choroidal rupture ...

Copy this HTML:

Copy HTML Copied!

The Crescent Scar

Clinically, a choroidal rupture presents with a very distinct appearance. It looks like a yellow or white crescent-shaped streak located deep under the retina. The streak is usually concentric to the optic disc, curving around the nerve like a parentheses mark. In the acute phase immediately after the injury, the break is often hidden by a large subretinal hemorrhage (blood). Once the blood absorbs over a few weeks, the white scar becomes visible. This white color is the bare sclera showing through the crack where the choroid and pigment epithelium have been torn apart.

Direct vs. Indirect Ruptures

Doctors classify these ruptures based on their location relative to the impact. Direct ruptures occur at the site of impact and are usually anterior (near the front). They are rare because the object usually hits the bony rim of the orbit first. Indirect ruptures are far more common. They occur at the back of the eye, opposite the site of impact. This is a "counter-coup" injury. The shockwave travels through the eye and ripples the back wall, snapping the membrane near the optic nerve or the macula.

The CNV Risk (The Late Complication)

The most dangerous aspect of a choroidal rupture is not always the immediate injury, but a delayed complication called Choroidal Neovascularization (CNV). The rupture breaks the barrier between the blood-rich choroid and the retina. In an attempt to heal the crack, the body may grow new, abnormal blood vessels through the scar. These vessels are fragile and leak fluid or bleed. If this happens under the center of vision (the fovea), it can cause sudden, permanent blindness months or even years after the original accident. This secondary process mimics wet macular degeneration.

Visual Prognosis

The visual outcome depends entirely on location. If the rupture passes directly through the fovea (the center target), central vision is lost immediately and is unlikely to return. However, if the rupture is extra-foveal (to the side of the center), the patient may retain 20/20 vision, seeing only a curved blind spot in their peripheral field. The primary goal of long-term monitoring is to catch any CNV early before it bleeds into the healthy center.

FAQs on Choroidal Rupture

Can surgery fix the crack?

No. There is no way to sew Bruch's membrane back together. The scar is permanent. Treatment focuses on managing complications like bleeding or vessel growth.

Is it painful?

The rupture itself is not painful because the internal layers of the eye lack pain receptors. The pain comes from the associated external trauma, such as a black eye or corneal abrasion.

How often should I check it?

Most doctors recommend a dilated exam every 6 to 12 months indefinitely. Patients are also given an Amsler Grid to check their own vision daily for waviness, which signals new vessel growth.

When to See Your Eye Doctor

If you have a known choroidal rupture from an old injury and you suddenly notice that straight lines look wavy or that a new dark spot has appeared near your old scar, you need an urgent injection of anti-VEGF medication to stop the new bleeding.

References

https://eyewiki.aao.org/Choroidal_Rupture https://pubmed.ncbi.nlm.nih.gov/12470992/ https://www.ncbi.nlm.nih.gov/books/NBK560601/ https://retinatoday.com/articles/2012-sept/traumatic-choroidal-rupture