Web BiOpticDrivingNetwork.org






Have you been told you can't drive because of reduced resolution or visual acuity?  Perhaps you can!



right & below: accurate technical diagrams of BiOptic, click each image to enlarge.

(courtesy Ocutech Inc.)

technical diagrams of BTS

technical diagrams of BTS
technical diagrams of BTS


BiOptic drivers: could you help with a survey Additionally, if you have any relevant pictures, please upload them, here.



"If you don't like the way I drive", by Paul B Freman O.D. is an interesting article that says much about our website.  [160 Kbs PDF format]


Have you been told you can't drive because of reduced resolution or visual acuity?  Perhaps you can!


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.


 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
Back to the top Hits since 29 March 2012

© 2001-2012 BiOptic Driving Network


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.