Practicing at EyeCare of Bonita on Bonita Road in Chula Vista's 91902 ZIP, Dr. Daniel Cha provides optometric examinations, contact lens fittings, and visual therapy services under California OD license 14779. Patients requiring surgical intervention for cataracts, glaucoma, or retinal conditions identified during routine exams follow a referral pathway to ophthalmology practices such as Castillejos Eye Institute for operative management. The Bonita Road office has served the Bonita community since the practice was established at this corridor in 1979, anchoring optometric care along Sweetwater Road and Central Avenue in the Bonita district. Comprehensive exams include refraction, tonometry for intraocular pressure measurement, dilated fundus evaluation, and visual field screening for early glaucoma detection. Cervicogenic headache cases presenting with concurrent visual disturbance — blurred vision, photophobia, or convergence insufficiency — coordinate interdisciplinary workup with Kohler Chiropractic to differentiate ocular from spinal origin. Specialty contact lens fitting protocols for keratoconus use corneal topography-guided scleral lens design with vault clearance calibrated to 200-300 microns over the corneal apex.