Screening for Stereopsis of Children Using an Autostereoscopic Smartphone

Figure 4

Legend to imitate pass test 3. (a) Card B (480″) was scanned at a normal pattern. The picture was blurred. (b) Picture B was scanned with the help of a polarizer film and was seen only by the left eye when wearing polarizing glasses at exam mode. (c) Picture C was scanned with the help of a polarizer film with the polarization direction perpendicular to picture B and was seen only by the right eye when wearing polarizing glasses at exam mode. (d) When fusing picture B and (C) a smile may appear out of the plane. (e) Position 1. The left side was the target side (960 × 1080) while the right part was blank comparison (960 × 1080). (f) Position 2, the right side was the target side while the left part was blank comparison. Positing 1 and 2 could be changed by the examiner to simulate the position of target and blank card as tested in the original test.

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