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[From phase I-IV-Correctly understand and assess study designs in ophthalmology]

Kristina Pfau1,2, Anja Deutsch3, Robert Németh4

  • 1Universitäts-Augenklinik Bonn, Universitätsklinikum Bonn, Bonn, Deutschland. Kristina.Pfau@ukbonn.de.

Die Ophthalmologie
|July 20, 2026
PubMed
Summary

Evaluating new ophthalmology treatments requires understanding clinical trial phases (I-IV). This guide helps clinicians critically assess evidence, focusing on study design and potential biases for better treatment decisions.

Keywords:
BiomarkersClinical studiesEndpointsEvidence-based ophthalmologyStudy phase

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Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...