HOYA (HOYA株式会社) is a company that specializes in optical glass manufacturing and advanced optics technologies. It operates through four business domains: Life Care, Information Technology, Other Businesses, and Corporate Venture Capital. The Life Care domain offers eyeglass lenses, medical endoscopes, intraocular lenses, and medical-related products. The Information Technology domain provides mask blanks and photomasks for semiconductor manufacturing, glass disks for hard disk drives, imaging-related products, etc. The Other Businesses domain offers ReadSpeaker, a text-to-speech software. Corporate Venture Capital is a domain dedicated to investing across eye-to-GI (gastrointestinal), ear-nose-throat (ENT), minimum-invasive surgery (MIS), and other areas.