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How does BiOptic Driving Network make money?


We are run by unpaid volunteers, are a registered not for profit organization, and our mission is published here.


Like any organization, we have to raise money to pay for deliver of our services, despite our most efficient efforts to keep running costs to a minimum.  We don't make a profit, and our costs include telephones, faxes, letters, literature, etc.  We rely mostly on public donations, made here


BiOptic Driving Network has also received a small number of grants and corporate sponsorships, but still needs modest advertising on our website.


Ads on this website . .


BiOptic Driving Network places ads by Google, and by direct corporate sponsors.


What are Ads by Google? Ads by Google are contextually relevant advertisements that appear beside related content on each page. Like BDN, the web publishers who display Ads by Google are part of the Google AdSense program, and the ads come from Google's base of AdWords advertisers.  BiOptic Driving Network does not sell, endorse, or offer opinions on, products, manufacturers, or professionals whose services/products may be secured following posting on this website.


Displaying ads helps us generate revenue to reduce membership cost.  That revenue is managed consistent with our not for profit status.  Want your business to appear on this site?  Please contact us.


BiOptic Lenses


A BiOptic is a lens system with a telescope attached to a pair of glasses, above (BTL is below) one's normal line of sight. This allows a trained user the opportunity to detect objects or movement within his/her driving scene using the wide field of view available through the regular spectacle lens and to resolve fine details such as road signs and traffic lights by glancing briefly and intermittently into and out of the miniature telescopic unit.  BiOptic lens systems used for visual assistance in the driving task are available in a number of different styles, sizes, and powers: the latter most commonly ranging from 2X - 5.5X ( " X " referring to the strength or power of magnification of the telescopic unit). 


It was William Feinbloom, O.D. who coined the name "BiOptic" and the abbreviation BTS in the 1950's, when he first designed the lens.  He used the abbreviation BTS for "BiOptic telescopic system"  Dr. Feinbloom defined a BiOptic as "a bi-visual optical system which mounts a miniature aperture telescope in the superior portion of a carrier lens enabling the user to rapidly change fixation from the carrier lens to the telescopic system."  More information may be found in Dr. Feinbloom's many publications, in professional journals published during the 60's, and 70's, until his death during the 80's.  He first reported on the BiOptic in 1958.  Also, Schapero's Diction of Visual Science defines "a bi-visual system consisting of a small aperture telescope to magnify distant objects mounted in a portion of the patient's normal distance correction lens."


Some jurisdictions in the US restrict the power of the telescopes permitted.  Of course, not all BiOptics are used for driving.  The use determines the power, working distance and location on the carrier lens.


If you have any relevant pictures, please upload them, here.


 BiOptic Driving Network is supported by Vidahost


All 2000+ pages on this website were BOBBY level 1 compliant  We'd be grateful for expert assistance to develop this to modern standards. Please contact the Webmasters via facebook link above. Contact Webmasters Accessibility   This page last edited: 13 April 2012
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Disclaimer statement: BiOptic Driving Network does not sell, endorse, or offer opinions on products, manufacturers, or professionals whose services/products may be secured following posting on this website.  Products and individuals pictures on this site have been specifically authorized by the relevant manufacturer or individual.  We are a registered not for profit organization, and provide information to help make informed choices.  We do not give individuals optometric or ophthalmologic advice, but may refer one to an eminent expert.  A BiOptic Telescopic System does not itself make someone a safe driver; specialized training is prerequisite.