This Independant Gloucester based British company produces the most comprehensive range of spectacle lenses available in the UK today. They manufacture all the lenses in Gloucester so they are able to produce lenses for complex prescriptions that are often rejected by larger military national groups. Carl Zeiss, a well known German lens manufacturer, still leads the field in the manufacture of glass prescription lenses. If you require the thinnest possible lens, the Zeiss glass lenses are available in the highest refractive index of 1.9, therefore ensuring the best possible appearance for those with very high prescriptions. Essilor is the worlds largest manufacturer of ophthalmic lenses. They invented "varilux" the worlds first varifocal lens in 1959 and have been improving on the great idea ever since. Essilor also has an impressive array of photochromic, tinted and high index lenses. Hoya uk is based in Wrexham and supplies a wide range of lenses in single vision, bifocal and progressive designs. All the designs are available in different materials and with different finishes, catering for a variety of budgets and lifestyles.