BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="Kevin Purcell" data-source="post: 1393523" data-attributes="member: 68323">See this article<a href="http://en.wikipedia.org/wiki/Aberration_in_optical_systems" target="_blank">http://en.wikipedia.org/wiki/Aberration_in_optical_systems</a>particularly the bit about Zernike model of aberrations. <a href="http://en.wikipedia.org/wiki/Aberration_in_optical_systems#Zernike_model_of_aberrations" target="_blank">http://en.wikipedia.org/wiki/Aberration_in_optical_systems#Zernike_model_of_aberrations</a>As you increase the oder of the polynomial you get a different aberration. I think the bottom five are the ones they can measure for the eye using a wavefront analyzer. If your optician doesn't show you the output ask to see it. It's rather fun in a geeky way.<a href="http://en.wikipedia.org/wiki/Aberration_in_optical_systems#Zernike_model_of_aberrations" target="_blank">http://en.wikipedia.org/wiki/Aberration_in_optical_systems#Zernike_model_of_aberrations</a>and this presentation is a good introduction<a href="http://scien.stanford.edu/class/psych221/projects/03/pmaeda/index_files/ppt_presentation.ppt" target="_blank">http://scien.stanford.edu/class/psych221/projects/03/pmaeda/index_files/ppt_presentation.ppt</a>this paper is a bit more focused<a href="http://research.opt.indiana.edu/Library/Mopane2003/CampbellC2/Campbell_C_2.pdf" target="_blank">http://research.opt.indiana.edu/Library/Mopane2003/CampbellC2/Campbell_C_2.pdf</a>You can diagnose them but you will never be able to correct them with a simple lens or even a fancy shaped eyeglass lens. But contact lens might be a possibility (though I suspect you can't register them with the properly). It's possible laser eye surgery might go in this direction though right now some of the failures of laser eye surgery are due to higher order aberrations.If you can using interesting systems (spatial light modulators ... they're not just for Loony Tunes cartoons <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink    ;)" loading="lazy" data-shortname=";)" /> ) you might be able to correct some of these in the future. See this paper:<a href="http://www.eurocongress.com.pl/do2005/DO_manuscript/lectures/L-044.pdf" target="_blank">http://www.eurocongress.com.pl/do2005/DO_manuscript/lectures/L-044.pdf</a>Imagine an image stablizing, abberation correcting and user adapting binocular of The Future ...</blockquote>

Verification