HDO is a supplier in the Eye Care industry with over 10 years' experience, focusing on Assistive technology, Ophthalmology and Optometry.We design and manufacture Assistive devices (video magnifier; desktop video magnifier; Led magnifier) Ophthalmic instrument (slit lamp; imaging module; ophthalmoscope; retinoscopy) and Optometric equipment (vision chart; eye chart dongle; lensmeter; auto lensometer).HDO products are quite comparable to those of the well-known brand manufacturers, for example: Marco, Nidek, Topcon, Huvitz in OPHTHALMOLOGY and Enhanced vision system, Optelec, Freedom scientific in LOW VISION, reaching out into Optometrists, Ophthalmologists, Eye hospitals, Seniors and Visually impaired individuals, etc.HDO occupies global market in ways of distribution, wholesale or retail, the buyers are from USA, France, UK, Germany, Italy, Austria, India, Taiwan, Japan, Thailand, Mexico, Brazil, etc.HDO is well accepted due to high quality and reliability.