NEW YORK—Corporate eyecare providers, primarily retail chains, have a 32 percent market share of the primary eyecare patient population and a 46 percent share of primary eyecare revenue, according to the Review of Optometric Business special report on Challenges and Opportunities in the Future of Independent Optometry, sponsored by Vision Source. This compares with independent ODs (not affiliated with large eyecare corporations or ophthalmology practices), which control 53 percent of patients and 42 percent of primary eyecare revenue. Ophthalmologists hold a 15 percent share of primary eyecare consumers and 12 percent of revenue.