Iridodonesis
Iridodonesis (pronounced: ir-i-do-ne-sis) is a medical term that refers to the involuntary trembling or oscillation of the iris in the eye, often observed when the eye moves. This condition is typically associated with aphakia, the absence of the lens of the eye due to surgical removal, a penetrating wound or ulcer, or congenital anomaly.
Etymology
The term "Iridodonesis" is derived from the Greek words "iris", which refers to the colored part of the eye, and "donesis", meaning trembling.
Symptoms
The primary symptom of iridodonesis is the noticeable shaking of the iris, which can be observed when the eye moves. This can sometimes be accompanied by photophobia, or light sensitivity, and blurred vision.
Causes
Iridodonesis is most commonly caused by the absence of the eye's lens (aphakia), which can occur due to surgical removal, a penetrating wound or ulcer, or a congenital anomaly. The lens helps to stabilize the iris, and without it, the iris is free to move and tremble.
Treatment
Treatment for iridodonesis typically involves addressing the underlying cause of the condition. This may include surgical intervention to replace the missing lens with an artificial one, known as an intraocular lens (IOL).
Related Terms
- Aphakia: The absence of the lens of the eye.
- Intraocular lens (IOL): An artificial lens implanted in the eye, typically after the natural lens has been removed.
- Photophobia: An abnormal sensitivity to light.
External links
- Medical encyclopedia article on Iridodonesis
- Wikipedia's article - Iridodonesis
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