Iridodonesis is best described as?

Iridodonesis is best described as?

• A. Trembling of the iris due to iris atrophy
• B. Trembling of the iris due to pupil dilation
• C. Trembling of the iris due to inflammatory changes in the iris
• D. Trembling of the iris due to lens instability

Answer: (D)

Iridodonesis appears when the lens loses its normal support, so the lens wobbles inside the eye. That instability disrupts the relationship between the iris and the lens, making the iris itself tremble, especially when the pupil is dilated and the iris is more free to move. So the trembling of the iris is a sign that the lens is unstable or displaced. That’s why the best description is trembing of the iris due to lens instability. The other options describe iris changes or pupil-dilation effects that aren’t the underlying cause of this tremor.

Iridodonesis appears when the lens loses its normal support, so the lens wobbles inside the eye. That instability disrupts the relationship between the iris and the lens, making the iris itself tremble, especially when the pupil is dilated and the iris is more free to move. So the trembling of the iris is a sign that the lens is unstable or displaced.

That’s why the best description is trembing of the iris due to lens instability. The other options describe iris changes or pupil-dilation effects that aren’t the underlying cause of this tremor.