eyeofdiseasecondition Ju-ketsu Hyperemia Redness of the eyes can be caused by foreign objects getting into the eyes, rubbing the eyes, or physical irritation. Additionally, redness can occur if you wear contact lenses for extended periods or if your eyes become severely fatigued, as this can lead to oxygen deprivation in the cornea. Redness of the eyes is an important sign that something is wrong with your eyes. In rare cases, it may be a subconjunctival hemorrhage, so it's important to identify the cause and take the correct action. Supervised by: Dr. Masayoshi Kajita, Director of Kajita Eye ClinicAfter graduating from Fukushima Medical University in 1983, he worked as a researcher at the University of California, Berkeley, before opening Kajita Ophthalmology Clinic in 2003. From 2018 to 2021, he served as a Clinical Professor at Tokyo Medical and Dental University School of Medicine. In 2022, he was awarded Honorary Membership by the Japan Contact Lens Society, and in 2023, Honorary Membership by the Japanese Society of Ophthalmic Optics. He currently serves as a councilor of the Japan Ophthalmological Society and a member of the drafting committee for the Japanese Medical Optics JIS standards.