The Accupen is a Hendheld Tonometer with many advantages over the Tono-Pen

Optimetrics offers new and used ophthalmic equipments and instruments for ophthalmologists, optometrists and optical laboratories in the United States and Latin-America.

Gulden Ophthalmics, eye spheres, conformers, prisms, prismbars

The Bach Cantatas Website (BCW) is a comprehensive site covering all aspects of J.S. Bach's cantatas and his other vocal works. The BCW contains discussions and detailed discographies of each cantata and other vocal works, performers and general topics. The BCW also contains texts and translations, scores, music examples, articles and interviews, and over 7,400 short biographies of performers of Bach's vocal works and players of his keyboard and lute works, as well as of poets & composers associated with Bach. There are also other relevant resources such as the Lutheran church year, database of chorale texts & melodies and their authors, detailed discographies of many Bach's instrumental works (solo keyboard, lute, Art of Fugue, Musical Offering, etc.) and piano transcriptions and their performers, reviews and discussions of Bach’s instrumental works, books and movies on Bach, terms and abbreviations, schedule of concerts of Bach's vocal works, guide to Bach tour, Bach in arts and memorabilia, thousands of links to other relevant resources. The BCW is an international collective project, being compiled from various postings about the subject, most of which have been sent to the Bach Mailing Lists.

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