The key players in the ophthalmology drug market are Alcon (U.S.), Allergan (U.S.), Merck (U.S.), Pfizer (U.S.), Roche (Switzerland), and Santen (Japan). In the devices field,
prominent players are Abbott Medical Optics (U.S.), Alcon, Bausch & Lomb, Inc. (U.S.), Carl Zeiss Meditec (Germany), Essilor (France), Johnson & Johnson (U.S.), Nidek (Japan), and Topcon (Japan).
Alcon is the leading player in the surgical devices business, whereas Topcon is the leader in
the diagnostic devices market. Each segment of ophthalmology is dominated by different players owing to their core competencies.
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