http://www.innovamed.com/sites/default/files/106_Interpreting%20OU%20Printout.pdf

Which parameter do you want to compare ?

I would recommend to use the maps of the group around David F. Garway-Heath like the following article

Mapping Standard Automated Perimetry to the Peripapillary Retinal Nerve Fiber Layer in Glaucoma

http://www.iovs.org/content/49/7/3018.full.pdf+html

or the the maps of the group around Hood

A framework for comparing structural and functional measures of glaucomatous damage.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2110881/

There is an article from one of them I think 2009 with very nice map structure and function correlation

sorry that i can not remember the name of the article I´ll try

It's not that easy to use the Garway-Heath map in your case as this map is based on the 24-2 grid pattern (Humphrey-SAP). You need to know the areas of the ONH which correspond to the Octopus grid pattern.

In the Garway-Heath structure-function map, retinal nerve fibers were traced back to the ONH and their entry point was noted. The visual field grid pattern was then superimposed in order to get the structure-function relationship (see also my publication in IOVS: http://www.ncbi.nlm.nih.gov/pubmed/23882689).

We have done something similar in the above mentioned paper (traced single RNF bundles). But we haven't done it for the Octopus grid pattern (and I'm not sure if anybody has done it so far). I think this process would be necessary in your case (e.g. the Octopus grid pattern must be superimposed on fundus photographs with traced bundles). Do you only have HRT data to correlate with Octopus?

Have a look at my other paper (http://www.ncbi.nlm.nih.gov/pubmed/23074201) where we correlated HRT with several different visual field tests (SAP, FDT, FDF).

Thank you for your answer. Octopus 900 pro has an polar and cluster graph analysis and according to recommendation od Hagg-Streit as manufacturer, there is correlation between these graphs and sectorial MRA on HRT3. I am wondering, may I use categorial variables for statistical analysis. (e.g. if there is temporoinferior sector outside of normal limit on HRT 3 MRA and, if there is visible defect on polar graph in the same sector, the conclusion in my clinical work is: Yes, there is correlation. But, I have the sample of 30 glaucoma suspect POAG patients and 30 controls healthy subjects and, I am wondering is it correct to apply these results (categorial variables) for statistical analysis in searchig structure-function relationship.

Thank you in advance