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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Ophthalmology. 2013 Nov 26;121(2):498–507. doi: 10.1016/j.ophtha.2013.09.016

Figure 4.

Figure 4

Example of how survival probabilities can be updated as more information on predictive factors becomes available during follow-up. A. Left panel shows survival probabilities after considering only the baseline data. The model estimated that the probability of retaining a normal standard automated perimetry (SAP) visual field over time was relatively high. As more information became available (middle and right panels), the survival probabilities were updated. The estimated survival probabilities became much lower as the result of progressive increase of frequency doubling technology (FDT) pattern standard deviation (PSD) over time. B. Corresponding FDT pattern deviation plot showing progressive deterioration. C. SAP visual fields for the same eye showing development of a repeatable defect at the end of follow-up.