Fig 1.
FVA Measurement System and results of typical cases.
(A) FVA Measurement System (AS-28, Kowa). (B) Representative printout of a typical case with good FVA. The blue line denotes the Landolt corrected VA. The red line shows the time-wise changes in the VA during testing. The green line denotes the mean logMAR VA during 60 seconds, defined as the FVA. The yellow dots indicate the number of correct responses and the blue arrows indicate spontaneous blinks. FVA (logMAR), -0.08; VMR, 0.99; max/min logMAR VAs, -0.18/0.05, respectively; ART, 1.47 seconds. (C) Representative printout of a typical case with low FVA. FVA (logMAR), 0.19; VMR, 0.83; max/min logMAR VA, 0.05/0.52, respectively; ART, 1.46 seconds.
Fig 2.
Useful field of view with the VFIT-EV test.
(A) Useful field of view with the VFIT-EV test. (B) Game controller used to respond during the VFIT-EV test. (C) Screen display of the VFIT-EV, dual-task test (actual test).
Table 1.
Refraction and visual function.
Table 2.
Results of the VFIT-EV.
Table 3.
Spearman Rank Correlation of the CDVA, Parameters of the CDFVA, and the VFIT-EV with Each Other (n = 45)a.
Table 4.
Spearman rank correlation of the CDVA, parameters of the CDFVA, and the VFIT-EV with each other in the control group (n = 30)*.
Table 5.
Results of multivariate regression analysis with stepwise selection in terms of the CAR of the VFIT-EV.
Fig 3.
Correlation between the CDFVA and the CAR of the VFIT-EV.
The correlation between the CDFVA and the CAR of the VFIT-EV is significant (r = -0.606, P = 0.000). The triangles indicate the data from the elderly group, and the squares indicate the data from the control group.