Talk:Snellen chart
From Wikipedia, the free encyclopedia
[edit] Not all eye charts are Snellen charts
Although Snellen charts are eye charts, not all eye charts are Snellen charts (see recent additions of Landolt C and Lea test). I'm wondering if anyone else thinks that Eye chart should NOT redirect to this article. Edwardian 06:44, 15 September 2005 (UTC)
-
- That's a good thought. Snellen chart was, for so long, the only eye chart article we had, so a redirect made sense. Now, though, I think "eye chart" should probably be a disambig page for the snellen, landolt C, and lea tests. Joyous (talk) 11:01, 15 September 2005 (UTC)
-
- Good idea. The first line of the Snellen chart article should also be adjusted. Dontaskme 19:47, 15 September 2005 (UTC)
I've re-created Eye chart with mention of the above charts. Much of the information on Snellen chart (i.e. "20/20 Vision", "Variations") should probably be moved, too. Are you guys OK with that? By the way, the "Big E" on my Snellen chart is a 20/200 letter, but I also have a projection chart (which I don't think it is technically a Snellen chart) with a 20/400 "Big E". Edwardian 21:02, 15 September 2005 (UTC)
-
- Yes, I think everything that is not specific to the Snellen chart should be moved.
- In Hungary it seems that every optometrist uses an eye chart somewhat unlike this one (but always the same one). It's one with numbers only, no letters. The top row which has the largest numbers reads 42. Below that, there are two digits in the first few rows, and three two digit numbers in the lower rows: there's a column of numbers divided by a bar on each side, but the three numbers in each row has the same side. On the bottom there's a special row with several numbers of different sizes (but smaller ones than above). There's a thin red line in the chart but no green one. There are also two similarly looking charts I occasionally see, one has E shapes rotated in four directions, the other has letters, but I belive they're not the same as the chart show here, as they're similar in alignment to what I've described here in that all symbols appear in twos.
- I wonder if Wikipedia has information on these charts. – b_jonas 09:38, 1 June 2006 (UTC)
[edit] Tumbling 'E' charts
Could someone post a photo of this in the article? It's the tumbling 'E' version of the chart (consisting only of rotated letter E's).
