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. Author manuscript; available in PMC: 2018 Apr 16.
Published in final edited form as: Eye (Lond). 2018 Jan 26;32(4):788–795. doi: 10.1038/eye.2017.297

Figure 2.

Figure 2

Person-Item or Wright’s maps illustrating the distributions of patient responses in the upper panel from those with 2 cataracts, in the second panel from those with 1 cataract (a cataract in one eye and either pseudophakia or a clear crystalline lenses in the other), and in the third panel those with no cataracts (either bilateral pseudophakia or pseudophakia in one eye and a clear crystalline lenses in the other). The lower panel in Figure 2a shows the positions of the Item Locations (Loc) and Category Thresholds (T#) for Cat-PROM5 and Figure 2b shows these similarly for Catquest-9SF. All panels refer to the same horizontal scale from -9 to +9 logits.