A person who requires ocular lenses may experience refractive instability.


Refractive instability refers to a significant change in lens prescription over a short period of time, typically within a year.


Risk factors for refractive instability:

(1) medications causing a fluctuation in visual acuity

(2) if female, pregnancy or breastfeeding

(3) diabetes

(4) other endocrine disorders with wide fluctuations in hormone levels

(5) age < 25 years


If refractive instability is detected then it is important to determine the cause.


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