Koizumi Eye Clinic is a specialized ophthalmology clinic located on the 2nd floor of the Yamamotoya Building, conveniently close to Oji Station served by the JR Keihin-Tohoku Line and Tokyo Metro Namboku Line in Kita Ward, Tokyo. The clinic provides comprehensive care for a wide range of eye conditions, from common issues such as dry eye, eye strain, hay fever, and allergic conjunctivitis to chronic diseases like glaucoma and diabetic retinopathy, as well as eyeglass and contact lens prescriptions. The facility is equipped with a visual acuity chart, auto-refractokeratometer, fundus camera, and automated perimeter, enabling comprehensive precision examinations including refractive error measurement, fundus photography, and visual field testing to be performed in-house. Clinic hours are 10:30 AM to 1:00 PM and 2:00 PM to 6:30 PM, with services offered six days a week, excluding Wednesdays and the New Year holiday period. A distinctive feature is the thorough, patient-focused instruction provided for first-time contact lens wearers, with insertion and removal practice available until 6:00 PM. English-language support is available, and barrier-free facilities are in place, creating an accessible environment for non-Japanese speakers and those requiring physical assistance. With the added convenience of the Toden Arakawa Line (Tokyo Sakura Tram), the clinic serves as a notable ophthalmology option for residents of Kita Ward and surrounding areas.