Prolonged use of smartphones, computers, and tablets has been reported to reduce blink frequency and increase incomplete blinking, which can destabilize the tear film.¹⁻²
As a result, contact lens wearers may experience:
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Fluctuating or blurred vision
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Dryness
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Lens surface discomfort
In these environments, maintaining Clear and comfortable vision throughout the day depends on not only on lens materials or designs, but also on:
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Surface wettability that allows the lens to interact smoothly with the tear film
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Surface properties that help resist lipid and deposit adhesion
Research suggests that lens surface wettability influences tear film stability, while tear film instability may contribute to fluctuations in vision quality and reduced comfort.³ In addition, Lipid and protein deposit accumulation on the lens surface is considered one of the factors that can negatively affect both comfort and visual performance.³
Mechanism of Tear Film Instability During Digital Device Use
(Conceptual diagram showing the relationship between the tear film and visual function)
Recommended Product - Miru 1month Menicon
Miru 1month Menicon
(Featuring MeniSilk™ material and NanoGloss™ Elevate surface technology)
NanoGloss™ Elevate is a proprietary surface treatment technology that optimizes the lens surface at the nanometer level.
Its highly wettable surface helps stabilize the tear film while reducing lipid and protein deposit adhesion, helping maintain lens surface clarity throughout the day.
In addition, the MeniSilk™ material offers high oxygen transmissibility (Dk/t 161), one of the higher levels available among disposable contact lenses, supporting ocular health during extended wear.
Recommended for:
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People who spend long hours using computers, smartphones, or tablets
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Those who experience blurred vision or dryness toward the end of the day
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Individuals seeking more consistent vision throughout the day
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Those looking to minimize eye strain during long wearing hours
Evaluation During Digital Device Use
In a clinical evaluation (n = 19), the proportion of participants rating their vision quality as "Excellent" during digital device use was:
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Miru 1month: 73.7%
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Biofinity®: 57.9%
A higher proportion of participants rated vision quality as "Excellent" with Miru 1month compared with Biofinity® during digital device use (Menicon data on file, 2025).
Miru 1month also demonstrated favorable results for end-of-day dryness compared with Biofinity® and eventually more participants selected Miru 1month as a preferable choice against Biofinity® (Menicon data on file, 2025).
Menicon Insight
Menicon's internal research suggests that maintaining a stable tear film and a clean lens surface may contribute to more consistent vision during prolonged digital device use. (Menicon data on file)
Other Options May Be More Suitable If You:
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Wear contact lenses only for short periods
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Prefer daily disposable lenses
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Prioritize cost above all other factors
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Spend relatively little time using digital devices
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Prefer an exceptionally soft initial wearing sensation above other lens characteristics
Contact lens selection should be based on individual lifestyle, visual demands, and wearing environment.
Choosing a lens that matches your daily needs can help support both long-term comfort and ocular health.
References
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Rosenfield M. Computer Vision Syndrome (a.k.a. Digital Eye Strain). Optometry in Practice. 2016;17(1):1–10.
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Craig JP, Alves M, Wolffsohn JS, et al. TFOS Lifestyle Report Introduction: A Lifestyle Epidemic – Ocular Surface Disease. Ocul Surf. 2023;28:2–11.
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Nichols JJ, Willcox MDP, Bron AJ, et al. The TFOS International Workshop on Contact Lens Discomfort: Executive Summary. Invest Ophthalmol Vis Sci. 2013;54:TFOS7–TFOS13.