OCULUS\" Optikgeräte GmbH manufactures medical instruments for ophthalmologists, optometrists, and opticians. It offers working chairs, lifting tables, laser, measuring glasses and accessories, and eye test devices. The company was founded by Alois Mager in 1895 and is headquartered in Wetzlar, Germany.

Topcon, their core business is founded on the surveying instruments they have manufactured since their founding in 1932 and ophthalmic & medical equipment they introduced to the market following World War II. Since then, they have expanded their business domains through a combination of M&A and alliances, including construction machinery control technology since 1994, precision GPS receivers since 2000, precision agriculture since 2006, and mobile control technology since 2007. Today, the world is facing an increase in eye diseases due to global population aging, food shortages caused by global population increase, global infrastructure demands and a shortage of engineering personnel to meet that demand, and continued infrastructure deterioration. In the domains of healthcare, agriculture, and infrastructure, they embraces the slogan "Topcon for Human Life" as they work to expand their business by applying Topcon solutions towards resolving societal challenges.

Vision Express Group Limited delivers superior, high quality and affordable eye care. Vision Express has over 390 stores nationwide and continues to maintain its position as one of the leading and most trusted opticians in the UK and Ireland.

HOYA CORPORATION is engaged in the manufacture and sale of electronics-related products, imaging products, healthcare products and medical products. The Company operates in three business segments The Information and Communication business segment has two divisions. The Electronics division offers photomasks and mask blanks for semiconductors, liquid crystal displays masks and hard drive (HDD) for glass disk use. The Image division provides optical lens, digital camera modules and optical devices, among others. The Life Care segment has two divisions. The Healthcare division offers ophthalmic lenses and contact lenses. The Medical division provides endoscopes, intraocular lenses and artificial bones. The Others segment is involved in the building of information systems. On October 1, 2011, the Company established a wholly owned subsidiary to takeover the manufacture and sale of imaging system from HOYA, and sold all shares of the newly established subsidiary to Ricoh Company, Ltd.

Lianyungang Tiannuo Optical Instrument Co., Ltd., established on 2001-04-24, Business scope includes medical device production(Specific items according to<Medical device production license>Approved scope of operation);Wholesale of medical equipment(Specific items according to<Medical device production license>Approved scope of operation);wipe sheet,Glasses,CD-ROM,Optical Instruments,Manufacture of Ophthalmic Medical Devices;Self-operated and agent import and export business of various commodities and technologies,Except for commodities and technologies that are restricted by the state to be operated by enterprises or prohibited from import and export.(Except for the above business scope involving national restrictions and prohibited production,Manufactures can only be produced after obtaining a license involving special approval)***

AO Safety Products is an American private company located in Southbridge, MA. The firm provides optical instruments & lenses.

Altodigital South Ltd., part of Altodigital Ltd., is a company headquartered in London, UK, specializing in office machines. On February 01, 2000 Altodigital Ltd. acquired Altodigital South Ltd. for $3.56 million.

Shaanxi Yishikang Vision Technology Co., Ltd., established on 2014-11-19, Business scope includes general items:glasses sales(Contact lenses not included);Optical Instrument Sales;glasses manufacturing;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Production of Class I Medical Devices;Production of protective equipment for medical personnel(Ι class medical device);Sales of hygiene products and single-use medical products;Sales of Class I Medical Devices;Sales of Class II Medical Devices;Manufacturing of medical packaging materials;Cosmetics Wholesale;Cosmetics Retail;Disinfectant sales(Free of Hazardous Chemicals);Food Internet Sales(Selling prepackaged food);internet sales(Except for products that require a license for sale).(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Health food sales;food business;Drug internet information service;Production of hygiene products and single-use medical products;Production of Class II Medical Devices;Disinfectant production(Free of Hazardous Chemicals);Cosmetic production;Health food production;medical service;Pharmaceutical commissioned production(Steamed Chinese Herbal Pieces,saute,broil,The application of calcining and other processing technologies and the production of secret prescription products of Chinese patent medicines).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results)

Zhejiang Weizhen Medical Technology Co., Ltd., established on 2017-09-21, Business scope includes general items:Mechanical equipment research and development;Research and Development of Household Appliances;Production of Class I Medical Devices;R&D of metal products;Hardware product development;Production of protective equipment for medical personnel(Ι class medical device);Optical Instrument Manufacturing;Production of special labor protection products;Production of labor protection products;Manufacturing of electronic measuring instruments;General equipment manufacturing(Does not include special equipment manufacturing);glasses manufacturing;Optical Glass Manufacturing;Household Appliance Manufacturing;Manufacturing of metal chains and other metal products;Sales of Class I Medical Devices;Sales of Class II Medical Devices;Optical Instrument Sales;Sales of electronic measuring instruments;Machinery sales;Metal Products Sales;glasses sales(Contact lenses not included);Optical Glass Sales;Sales of special labor protection products;Wholesale of protective equipment for medical staff;Retailing of protective equipment for healthcare workers;Sales of labor protection products;Cosmetics Wholesale;Cosmetics Retail;Home Appliance Sales;Sales of household appliances spare parts;electronics sales(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).licensed items:Production of Class II Medical Devices;Production of protective equipment for medical personnel(Class II medical device);Cosmetic production;Occupational Health Technical Services;Import and export;Technology Import and Export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results).

Danyang Xingda Optical Device Co., Ltd., established on 2000-06-19, Business scope includes prescription lenses,Optical element,Glasses,one type6820,Class II6822Medical Optics,Production of instruments and endoscopic equipment,Self-operated and agent import and export business of various commodities and technologies.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Nidek Co. Ltd. develops ophthalmic surgical and diagnostic equipment for the optical and eye care industries. It offers ophthalmic surgical devices, examination and diagnostic devices, electronic medical record and practice management medical filing systems, intra-ocular lenses and dermatological surgical lasers. The company was founded by Hideo Ozawa in July 1971 and is headquartered in Gamagori, Japan.

Designs For Vision is in the medical equipment industry and manufactures optical products for dental & surgical use.

Toshiba Corporation (株式会社東芝 Kabushiki-gaisha Tōshiba, English: /təˈʃiːbə, tɒ-, toʊ-/) is a Japanese multinational conglomerate headquartered in Tokyo, Japan. Its diversified products and services include information technology and communications equipment and systems, electronic components and materials, power systems, industrial and social infrastructure systems, consumer electronics, home appliances, medical equipment, office equipment, as well as lighting and logistics.

ETRI is the largest government funded research institute in Korea, which strives to advance science by means of formulating innovative ideas; developing new techniques; and training professional individuals in the area of information telecommunications to ultimately enhance social and economical aspects of the modern society.

Shengjue (Shanghai) Technology Co., Ltd., established on 2011-07-21, Business scope includes licensed projects:Import and export;Technology Import and Export;Production of Class II Medical Devices.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments) General project:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Production of Class I Medical Devices;Sales of Class I Medical Devices;Sales of Class II Medical Devices;housing lease;Non-residential real estate leases.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Zhongshan Jingmingtang Vision Optical Technology Co., Ltd., established on 2010-10-29, Business scope includes research and development,Sales:Class I medical device;Sales:Glasses,Optical Instruments,lens,Daily necessities,electronic product;Commodity circulation information consultation(law,Except for items prohibited by administrative regulations;law,Projects that are restricted by administrative regulations must be licensed before they can be operated).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Guizhou Provincial People's Hospital is a private company headquartered in Guiyang, China, that provides medical services.