Objective:

To explore the benefits and fitting factors of orthokeratology (ortho-k) in myopia control.

Key Findings:

• Ortho-k can slow myopia progression by an average of about 50%.
• Proper lens centration ensures effective myopic defocus and clear vision.
• The back optic zone diameter (BOZD) affects the size of the treatment zone, influencing myopia control.

Interpretation:

Ortho-k lenses are effective in managing myopia, but their success depends on proper fitting and individual patient characteristics.

Limitations:

• Higher refractive errors may lead to reduced vision due to partial correction.
• Some applications of ortho-k for higher myopia and astigmatism are considered off-label.

Conclusion:

Ortho-k lenses are a valuable option for myopia control, requiring careful consideration of fitting parameters for optimal outcomes.