Christopher Tyler

Tyler's present and recent past associates include Lora Likova, Josh Solomon, Chien-Chung Chen, Spero Nicholas, Mark Schira, Lenny Kontsevich, Russ Hamer, Anthony Norcia, Lauren Barghout, Amy Ione.

[4] Shortly after arriving at Smith-Kettlewell (in 1979) Tyler significantly advanced Julesz's random dot stereogram research when he invented the random-dot autostereogram.

[10][11] Tyler also has made convincing arguments against the thesis supported by Hockney's book Secret Knowledge: Rediscovering the Lost Techniques of the Old Masters that optical projection techniques aided many artist's paintings beginning in the early 15th century, but spread over about two centuries between 1420 and 1595,[9] citing variously Fabriano, Jan van Eyck, Pisanello, Mantegna, Melozzo di Forli, Cranach, Raphael and Moroni.

Tyler showed with geometric reconstructions at his web site[12] that the art works under discussion are brilliant paintings by eye rather than those compatible with optical projections.

[18] Tyler demonstrated Leonardo's authorship, who stated "For those projections dated later than 1508, his drawings should be effectively considered the original precursors ...".