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Question: Can a child’s power increase so much that Ortho-K no longer works?
Orthokeratology (Ortho-K Lens)
Answer: Yes. Ortho-K has limits. If you wait until your child’s power is too high (usually over -8.00D or -10.00D), the lens can no longer safely reshape the cornea. If you miss the window, you lose the option entirely.