Research

How to use this research library

The references below include historical studies, small case reports and larger clinical trials. They do not all carry the same strength of evidence. Read their dates and limitations, and discuss how the wider research applies to an individual patient.

Start with the 2025 International Myopia Institute intervention review for a more recent overview, then explore the original studies below.

Orthokeratology Lens Design and Efficacy

Long-term Orthokeratology Studies

Safety and Complications

Visual Quality and Quality-of-Life Measures

Discontinuation and Refractive Surgery

Your questions answered

Does one study prove a treatment is best?

No. Study design, participant numbers, comparison groups and follow-up affect what can be concluded. Results should be considered alongside the wider evidence.

Are older studies still useful?

They can provide historical context, but they should not be treated as the complete or latest evidence for an individual treatment decision.