What does phacodonesis refer to?

What does phacodonesis refer to?

• A. Movement of the iris
• B. Movement of the lens
• C. Complete lens luxation
• D. Normal lens positioning

Answer: (B)

Phacodonesis refers specifically to the movement of the lens within the eye. This phenomenon typically occurs in cases where there is insufficient support for the lens capsule, often due to conditions such as cataracts or trauma that compromise the zonules, which are fiber-like structures that hold the lens in place. When phacodonesis is present, the lens can exhibit a shaky or tremulous movement in response to eye movement. This movement can be clinically significant as it may indicate underlying ocular pathology affecting lens stability, and it can help veterinarians diagnose conditions that lead to lens instability, such as lens luxation or zonular dehiscence. Recognizing phacodonesis can assist in determining the appropriate course of treatment for ocular conditions.

Phacodonesis refers specifically to the movement of the lens within the eye. This phenomenon typically occurs in cases where there is insufficient support for the lens capsule, often due to conditions such as cataracts or trauma that compromise the zonules, which are fiber-like structures that hold the lens in place. When phacodonesis is present, the lens can exhibit a shaky or tremulous movement in response to eye movement.

This movement can be clinically significant as it may indicate underlying ocular pathology affecting lens stability, and it can help veterinarians diagnose conditions that lead to lens instability, such as lens luxation or zonular dehiscence. Recognizing phacodonesis can assist in determining the appropriate course of treatment for ocular conditions.