Materials and Methods: A search was made on YouTube with the keyword ?Ahmed glaucoma valve? in February 2022. Two hundred and thirteen videos were viewed, and 99 videos were evaluated to determine the DISCERN questionnaire, the American Journal of Medicine Association (JAMA) benchmark criteria, and Global Quality Score (GQS) as well as the video image quality and surgical adequacy.

Results: The DISCERN score was poor (33.64±3.54), the JAMA score was moderate (2.19±0.60), the GQS was fair (3.25±1.00), the surgical score was very good (9.13±1.01), and the image quality of the videos was moderate (3.03±1.32). Video image quality, the DISCERN, and GQS score values were significantly higher in videos that were uploaded by private hospitals or institutions (p=0.035, p=0.031, p=0.039, respectively). The DISCERN and GQS scores were significantly higher in the videos with audio and audio and subtitle together than the videos without audio (p<0.0001). There were significantly positive correlations between number of views and likes, view rate and the GQS, DISCERN score, and the video image quality.

Conclusion: Although many YouTube videos show the full stages of the ?Ahmed glaucoma valve? surgery, the quality and reliability of the videos are low. Videos with enhanced video image quality, that are supported with audio and subtitles, and increased reliability by providing surgeons and affiliation information can be a good educational resource for surgical trainees. Keywords : Ahmed glaucoma valve surgery, Global Quality score, JAMA score, video, YouTube