Board-certified by the American Board of Ophthalmology with a UCSD ophthalmology fellowship completed in 1999, Dr. Mark E. Warlen, MD operates a solo ophthalmology practice on Third Avenue housed inside a converted Hillcrest Victorian. Warlen earned his MD from Baylor College of Medicine in 1992 and completed residency at the Alton Ochsner Medical Foundation before joining the medical staff at Scripps Mercy Hospital and Scripps Memorial Hospital La Jolla, with co-management for routine refractive follow-ups extending to optometric colleagues including Kentaro E. Yamada, M.D. The practice focuses on cataract surgery, glaucoma medical and surgical management, ocular hypertension monitoring, and trichiasis treatment for the eyelid lash inversion that scrapes the cornea. Tagalog and English are both spoken in the office, broadening access for Filipino-American patients across uptown San Diego. General-surgery and anesthesia coordination for eye-adjacent procedures is handled through groups such as Pacific Coast Surgical Group when systemic management is required. The most involved cases combine phacoemulsification cataract extraction with selective laser trabeculoplasty for patients managing both cataract progression and open-angle glaucoma simultaneously.