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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Prog Retin Eye Res. 2010 Mar 11;29(4):249–271. doi: 10.1016/j.preteyeres.2010.02.001

Table 2.

Slope and intercept parameters for linear functions to determine the age-expected average of normal sensitivities across the test locations in a given sector of the HFA 24-2 perimetric field, which corresponds to a sector of the RNFL thickness scan, as presented in Fig. 6. The modified sector-MD is the average measured SAP sensitivity for a sector minus the expected average SAP sensitivity derived from the linear function with slope and intercept parameters listed in the table. The sector-MD is used in equation 12 to derive a stage-dependent correction, c.

Sector number 1 2 3 4 5 6 7 8 9 10
Slope (dB/year) −0.057 −0.061 −0.060 −0.062 −0.060 −0.057 −0.061 −0.057 −0.062 −0.060
Intercept (dB) 34.68 33.60 33.32 31.68 32.43 31.68 31.19 33.46 33.01 34.45