Association among Blink Rate, Changes in Ocular Surface Temperature, Tear Film Stability, and Functional Visual Acuity in Patients after Cataract Surgery

Figure 1

Representative results of functional visual acuity (FVA) in patients after cataract surgery. (a) A 69-year-old woman with unstable tear film (noninvasive tear breakup time (NIBUT), 2.1 seconds; functional visual acuity (FVA) logarithm of minimum angle of resolution (log MAR), −0.05; visual maintenance ratio (VMR), 0.99%; and blink rate (frequency/minute), 15). (b) A 79-year-old man with stable tear film (NIBUT, 10.0 seconds; FVA (log MAR), −0.04; VMR, 0.99%; and blink rate (frequency/minute), 0). The red line indicates the time-wise changes in the visual acuity (VA) for 60 seconds. The blue line indicates the starting VA, and the green line indicates the mean FVA for 60 seconds. The yellow dots indicate the number of correct responses, and the blue triangles indicate the spontaneous blinks.

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