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. 2018 Oct 1;7(5):18.
doi: 10.1167/tvst.7.5.18. eCollection 2018 Sep.

Effect of Ultrasonic Moisture Glasses on Dry Eye Signs and Symptoms

Shuhei Onomura  1 , Motoko Kawashima  1 , Naohiko Aketa  1 , Shinichiro Kondo  1   2 , Kazuo Tsubota  1
Affiliations

Effect of Ultrasonic Moisture Glasses on Dry Eye Signs and Symptoms

Shuhei Onomura et al. Transl Vis Sci Technol. .

Abstract

Purpose: This study was undertaken to evaluate the effect of a novel humidifying eyeglass-shaped device-ultrasonic moisture glasses-on dry eye signs and symptoms.

Methods: A total of 18 subjects with dry eye symptoms underwent a crossover test. A water cartridge was set on each temple of the eyeglass-shaped device. All subjects randomly wore the device twice in different settings, each for 10 minutes. Subjects wore the glasses once with the cartridges filled with water (the intervention group), and once with the cartridges empty (the control group). The order was randomized. We evaluated tear film break-up time (TBUT) and fluorescein staining score just before, immediately after, and 10 minutes after wearing the device. We also assessed functional visual acuity (FVA), blink frequency, and visual analog scale (VAS) score just before and immediately after wearing the device.

Results: TBUT, blink frequency, and VAS improved in the intervention group (all P < 0.001) and exhibited significant differences between the intervention and control groups.

Conclusions: Wearing the ultrasonic moisture glasses for 10 minutes improved tear stability and decreased dry eye symptoms in this cohort of subjects.

Translational relevance: These findings show that the ultrasonic moisture glasses are an effective device for improving dry eye signs and symptoms.

Keywords: dry eyes; humidity; moisture glasses; symptoms; tear film break-up time.

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Figures

Figure 1
Figure 1
Ultrasonic moisture glasses. (A) An interior view of the glasses is shown. (A′) An ultrasonic atomizing transducer is shown. (B) Water mist is shown, ejected from the window. (C) The operation schematic is shown. (D) Measurement of the humidity around the eyes of a mannequin is shown.
Figure 2
Figure 2
Transducers on the right and left vibrate alternately with the same On Time and Period.
Figure 3
Figure 3
Changes in the relative humidity around the eye of a mannequin (A–C) or one of the authors (D). In each panel, the transducer was turned on after 2 minutes, as indicated by an arrow. (A) The setting was as follows: the ratio of the On Tim) to the Period was 0.1% (0.1 ms/98 ms). (B) The setting was as follows: the ratio of On Time to Period was 1.1% (1.1 ms/98 ms). (C and D) The settings were as follows: the ratio of On Time to Period was 3.4% (8.4 ms/250 ms).
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