Data / Medical devices / Refractometer, Ophthalmic
Refractometer, Ophthalmic (HKO): 64 FDA-registered makers in 12 countries
64 establishments in 12 countries are registered with the FDA to make Refractometer, Ophthalmic (product code HKO, Class 1, 21 CFR 886.1760). 0 of them have a 510(k) clearance or PMA approval on file and 3 have a recall event. The FDA has issued 35 510(k) clearances under this code, the latest on December 19, 2003, and lists 5 recall events (0 Class I). FDA data exported November 2, 2026.
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- Product code
- HKO
- Device class
- 1
- Regulation
- 886.1760
- Medical specialty
- Ophthalmic
Makers by country
| Country | Makers |
|---|---|
| China | 15 |
| United States | 13 |
| Japan | 11 |
| India | 7 |
| South Korea | 6 |
| Germany | 4 |
| Italy | 2 |
| France | 2 |
| Brazil | 1 |
| Spain | 1 |
| Israel | 1 |
| Mexico | 1 |
Makers of Refractometer, Ophthalmic
Registered establishments that manufacture, contract manufacture, remanufacture, reprocess or own the specification of this device, with the 510(k) clearances, PMA approvals and recalls the FDA files under each. Best documented first.
| Maker | Location | Role | 510(k) clearances | Latest clearance | PMA approvals | Recall events | Class I | Source |
|---|---|---|---|---|---|---|---|---|
| 123 See | Boston, MA, United States | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Adaptica SRL | Padova, Italy | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Appasamy Associates Private Limited ( Thirubhuvanai)) | Mannadipet Commune Puducherry, India | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Apramed Industria E Comercio De Aparelhos Medicos Ltda | SAO CARLOS Sao Paulo, Brazil | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Atago Co., Ltd. | Minato-ku Tokyo, Japan | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Aurolab | MADURAI Tamil Nadu, India | Contract manufacturer, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Beijing Home Vision Ai Tech Co.,ltd. | Beijing, China | Exporter to the US, Manufacturer, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Canon Components, Inc. | KODAMA-GUN Saitama, Japan | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Canon Inc. | Kawasaki Kanagawa, Japan | Specification developer | 0 | 0 | 1 | 0 | api.fda.gov | |
| Carl Zeiss Meditec AG (jena) | JENA Thuringia, Germany | Repackager or relabeler, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Carl Zeiss Vision GMBH | AALEN Baden-Wurttemberg, Germany | Exporter to the US, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Chongqing Sunkingdom Medical Instrument Co.,ltd | Chongqing, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Chongqing Yeasn Science-Technology Co.,ltd. | Chongqing, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Canon.Inc | OHTA-KU Tokyo, Japan | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Carl Zeiss Meditec AG (Jena) | Jena Thuringia, Germany | Manufacturer | 0 | 0 | 1 | 0 | api.fda.gov | |
| ESSILOR International Usine de la Compasserie | Ligny en Barrois Meuse, France | Foreign private label distributor, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Everview Corp | Geumcheon-gu Seoul, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Eyeque Corporation | Newark, CA, United States | Repackager or relabeler, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Eyevis Mediworks Private Limited | Ahmedabad Gujarat, India | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Forus Health PVT.LTD. | Bengaluru Karnataka, India | Contract manufacturer, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| G2 Optic Co., Ltd | GUNPO-SI Gyeonggi, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Gino Optical (shanghai) Co., Ltd. | Shanghai, China | Exporter to the US, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Gobiquity, Inc. | Nashville, TN, United States | Complaint file establishment, Manufacturer, Remanufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Greens Surgicals Private Limited | Vadodara Gujarat, India | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Heru, Inc. | Miami, FL, United States | Complaint file establishment, Manufacturer, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Huvitz Co., Ltd. | Anyang-si Gyeonggi, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Jiang Xi Big Vision Medical Technology Co.,ltd | Ganzhou Jiangxi, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Lianyungang Tiannuo Optical Instrument Co., Ltd. | LIANYUNGANG Jiangsu, China | Contract manufacturer, Repackager or relabeler | 0 | 0 | 0 | 0 | api.fda.gov | |
| Luneau Technology Operations | Pont-de-l'Arche Eure, France | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| M/S Tarun Enterprises | Prayagraj, Uttar Pradesh, India | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Nidek Co., Ltd. | Gamagori, Aichi, Japan | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Nidek Co., Ltd. Hamacho Plant | Gamagori, Aichi, Japan | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Nidek Incorporated | The Colony, TX, United States | Manufacturer | 0 | 0 | 2 | 0 | api.fda.gov | |
| Ningbo Flo Optical Technology Development Co., Ltd. | Ningbo Zhejiang, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Ningbo Ming Sing Optical R&D Co., Ltd. | Ningbo Zhejiang, China | Exporter to the US, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Ovitz Corporation | Rochester, NY, United States | Repackager or relabeler, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Plenoptika Europe Slu | Madrid Madrid(Province), Spain | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Plenoptika, Inc. | Cambridge, MA, United States | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Plusoptix GMBH | Nuremberg Bavaria, Germany | Manufacturer, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Potec Co., Ltd. | Daejeon, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Pursuant Health | Alpharetta, GA, United States | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Ray Vision Inc. | Lake Forest, CA, United States | Repackager or relabeler, Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Remidio Innovative Solutions Private Limited | Bengaluru Karnataka, India | Manufacturer, Repackager or relabeler | 0 | 0 | 0 | 0 | api.fda.gov | |
| Rexxam.co., Ltd. | Takamatsu Kagawa, Japan | Contract manufacturer, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Right MFG. Co., Ltd. | Itabashi-Ku Tokyo, Japan | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| S4optik LLC | Jacksonville, FL, United States | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Shanghai Huvitz Co., Ltd. | Shanghai, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Shanghai Link Instruments Co.,ltd | Changzhou City Jiangsu, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Shanghai Mediworks Precision Instruments Co., Ltd. | Shanghai, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Shanghai Supore Instruments Co. Ltd. | Shanghai, China | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Shenzhen Certainn Technology Co., Ltd. | Shenzhen Guangdong, China | Exporter to the US, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Stereo Optical Company LLC | Chicago, IL, United States | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Tomey Corporation | NAGOYA Aichi, Japan | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Topcon Corp. | Tokyo, Japan | Specification developer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Taiyuan North China Xinyuan Tech. Center (Co., LTD.) | TAIYUAN Shaanxi, China | Contract manufacturer, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Topcon Healthcare, Inc. | Oakland, NJ, United States | Manufacturer for export | 0 | 0 | 0 | 0 | api.fda.gov | |
| Topcon Yamagata Co., LTD | Yamagata-KEN, Japan | Contract manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Unicos Co., Ltd. | daejeon, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| VISIA imaging S.r.l. | San Giovanni Valdarno Arezzo, Italy | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Visionix Ltd. | Jerusalem, Israel | Contract manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| View-M TECHNOLOGY CO., LTD | Gunpo-si Gyeonggi, South Korea | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Welch Allyn De Mexico, S. De R.L. De C.V. | TIJUANA Baja California, Mexico | Contract manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Welch Allyn, Inc. | Skaneateles Falls, NY, United States | Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov | |
| Wuxi Zontai Int'l Corporation Ltd. | WUXI Jiangsu, China | Contract manufacturer, Exporter to the US, Manufacturer | 0 | 0 | 0 | 0 | api.fda.gov |
Updated December 19, 2003. Read from openFDA bulk downloads (device registration and listing, 510(k), PMA, recall and enforcement files). CC0 1.0, public domain (openFDA terms of service). The files are joined on FDA identifiers: the 510(k) and PMA numbers a registration lists, and the recalling firm's FEI for recalls. Recall class comes from the FDA enforcement report. The FDA states that openFDA data is unvalidated and is not for decisions about medical care. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.