Dr. To and his wife, Michelle, are excited to finally bring Lumen Optometric to the city of Sierra Madre. They've worked tirelessly to create a space that's warm, inviting, and most importantly, a one-stop shop for all of your eye care needs. Our areas of concentration include scleral lenses for patients with keratoconus, corneal reshaping (ortho-k) for myopia management, and Neurolens therapy for patients with headaches/migraines.