A higher number of eye care clinicians was associated with a lower prevalence of visual impairment, according to a cross-sectional study in California.
The geographic distribution of ophthalmologists and optometrists in each of the 58 California counties and 542 medical service study areas (MSSAs) was evaluated. The number of ophthalmologists was obtained from American Academy of Ophthalmology membership data using practice zip codes, and the number of optometrists was obtained from the Blue Book of Optometrists. Information on visual impairment was gathered from the 2014 to 2018 American