Systematic Review and Meta-Analysis: Prevalence of Meibomian Gland Dysfunction Among Adults Aged 40 Years and Older. - Karimberdiyeva, Balzhan; Sadibekova, Zhanat; Raushanova, Aizhan; Karibayeva, Indira; Yerbol, Nuray; Abdrakhmanova, Zinat (Journal of Clinical Medicine, 2026)