Comments on: Part XIII: Facts and Figures concerning the human retina http://webvision.med.utah.edu The Organization of the Retina and Visual System Tue, 21 May 2013 00:04:07 +0000 hourly 1 http://wordpress.org/?v=3.5 By: Craige Lucee http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-199327 Craige Lucee Thu, 01 Nov 2012 06:51:00 +0000 http://155.100.105.205/#comment-199327 Still say its unusual for the arterioles to be so close– running almost horizontal from the disc; just a notation: teriary branching here within the disc is unusually close. Of course, there is usually ONE horizontal macular branch that peters-out under half-way. No problemo.

]]> By: Bryan William Jones http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-149871 Bryan William Jones Sat, 08 Sep 2012 05:20:19 +0000 http://155.100.105.205/#comment-149871 There could be some variation, but it also could be due to atypical pigment accumulation around the fovea.

]]> By: Craige Lucee http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-149740 Craige Lucee Sat, 08 Sep 2012 00:19:04 +0000 http://155.100.105.205/#comment-149740 Is Fig1 retina unusual in its superior arterial proximity to fovea? Yes, I am aware this is not its point; just looks like it from here.

]]> By: Bryan William Jones http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-134315 Bryan William Jones Mon, 06 Aug 2012 19:45:21 +0000 http://155.100.105.205/#comment-134315 That is not a bad idea. We’ll take it under advisement.

]]> By: M K Dewanjee http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-134252 M K Dewanjee Mon, 06 Aug 2012 16:58:51 +0000 http://155.100.105.205/#comment-134252 Could you please make a Fact Chart for mouse retina, like the one you served for human retina?

It will be great for rookies who are wetting their feet in vision research.

Thanks for webvision plate.

]]> By: Philip Nelson http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-92435 Philip Nelson Mon, 28 May 2012 13:26:39 +0000 http://155.100.105.205/#comment-92435 Hello Webvisionaries,
Thanks for this fantastic resource. I am looking for a specialized datum: The length of the human rod outer segment. I believe I have heard that this varies across the retina. I’m most interested in 7 degrees temporal eccentricity, but also interested in the entire variation. Many thanks for any leads.
, Univ Penn.

]]> By: Quora http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-40061 Quora Wed, 18 Jan 2012 17:14:07 +0000 http://155.100.105.205/#comment-40061 How can I work out the resolution of the human eye?…

The problem is mathematical, and I basically suck at that. The problem: The human eye is heterogeneous, in terms of resolution. Resolution is highest in central retina, in a region known as the fovea and lowest in the periphery retina. We are constantl…

]]> By: DR.VIJAY H DHARWADKAR http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-9289 DR.VIJAY H DHARWADKAR Tue, 06 Sep 2011 05:48:38 +0000 http://155.100.105.205/#comment-9289 VERY GOOD INFORMATION ABOUT HUMAN RETINA.
VERY INERESTING AND EDUCATIVE KNOWLEGE.I WILL REGULARLY VISIT THIS SITE.

]]> By: Bryan William Jones http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-2891 Bryan William Jones Fri, 10 Jun 2011 21:58:08 +0000 http://155.100.105.205/#comment-2891 Thank you Tom,

We’ll make the updates as soon as we finish migrating the complete database and fixing some of the issues related to the migration from the old html site.

As to your reference on colors, it is true that some female humans are tetrachromatic. If so, then they certainly can distinguish more colors than a trichromat. The issue is one of gene variation on the X chromosome, potentially OPN1MW and OPN1MW2. Since women have 2 x chromosomes, expressed gene variation may in fact, give them additional opsins.

]]> By: Tom Egnatz, CRA http://webvision.med.utah.edu/book/part-xiii-facts-and-figures-concerning-the-human-retina/#comment-2889 Tom Egnatz, CRA Fri, 10 Jun 2011 19:44:58 +0000 http://155.100.105.205/#comment-2889 Excellent site. One suggestion: update the retinal thickness with data from the Heidelberg Spectralis OCT.

I have read that the human retina can distinguish 6,000,000 shades and hues of color (at least the female retina can!). Can you track this down and cite a reference?

Thanks.

Thanks.

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