Iris root cut off

Introduction Iris root detachment refers to the breakage of the junction between the iris and the ciliary body. The structure of the joint is the weakest, and it is easy to break after being subjected to external force. When the force acts from the front to the eyeball, the pupil is blocked, the peripheral sclera is dilated, and the aqueous humor remaining in the anterior chamber is impacted by the iris around the aphakic support. The force of the blunt contusion is directly generated in the striking part. In addition to damage, because the eyeball is a sphere that is not easily compressed, blunt force is transmitted in the eye, causing the root of the traumatic iris to be broken, or the penetrating injury directly causes the root of the traumatic iris to be broken.

Cause

Most of the iris roots are broken due to blunt trauma to the eyeball. In rare cases, intraocular surgery can also occur. For example, when the cataract is removed, the iris is removed from the root.

an examination

Related inspection

Iris examination ophthalmoscopy

More often accompanied by corneal contusion, anterior chamber hemorrhage, eyeball rupture, vitreous hemorrhoids, crystal dislocation opacity, vitreous hemorrhage, retinal choroidal contusion and other complications leading to visual dysfunction.

1. Under the slit lamp or anterior chamber corner mirror, the crescent-shaped black crack or damage around the iris, through the break to see the peripheral part of the lens or ciliary process, and even the vitreous hemorrhoids, may be associated with anterior chamber hemorrhage.

2. Sometimes all the iris is completely disconnected from the root, which is called traumatic without iris.

3. The small iris root is disconnected and has no symptoms.

4. Moderately sized disconnection can cause pupillary deformation, leading to visual confusion.

5. The large iris root is disconnected, which can produce double eyelids and single eye double vision.

Differential diagnosis

Differential diagnosis of iris root disconnection:

(1) It should be differentiated from the root of the iris by surgery. Sometimes the pupil is also in a "D" shape.

(2) Traumatic aniridia should be differentiated from congenital aniridia, which has no history of trauma and is a hereditary disease.

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