What age range is typical for primary lens luxation?

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Multiple Choice

What age range is typical for primary lens luxation?

Explanation:
Primary lens luxation arises from inherited weakness of the zonular fibers that suspend the lens. Because this defect tends to manifest as the animal reaches middle age, the most common onset is in the range of about 3 to 7 years. Ages outside this window are less typical for the primary (hereditary) form: very young dogs may be rare exceptions or point to other etiologies, while older dogs are more often affected by secondary lens luxation or age-related changes. So, 3–7 years best fits the typical presentation.

Primary lens luxation arises from inherited weakness of the zonular fibers that suspend the lens. Because this defect tends to manifest as the animal reaches middle age, the most common onset is in the range of about 3 to 7 years. Ages outside this window are less typical for the primary (hereditary) form: very young dogs may be rare exceptions or point to other etiologies, while older dogs are more often affected by secondary lens luxation or age-related changes. So, 3–7 years best fits the typical presentation.

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