Rohto Pharmaceutical Co., Ltd. Analyzes Eye Health Data of 140,000 People and Body Measurement Pod Data from Expo 2025 Osaka, Kansai Healthcare Pavilion.

Rohto Pharmaceutical Co., Ltd. (Headquarters: Osaka, President: Hidetoshi Segi) collected and analyzed eye health data from over 100,000 participants (143,086 cases linked with body measurement pod data from April 13, 2025, to October 13, 2025) at its 'Future Eye Care' booth within the Osaka Healthcare Pavilion at Expo 2025 Osaka, Kansai. The results showed that approximately 30% of participants watched digital devices for 8 or more hours on weekdays, and those with longer viewing times reported higher rates of eye discomfort. Furthermore, using 'eye age' (an AI-estimated visual age based on the condition of the eye surface and surrounding skin) as an indicator, the study clarified the reality of modern eye conditions and their relationship with skin.

Based on these findings, the company will continue its awareness activities and other initiatives related to eye health.

Topics from the eye health data:

**Current state of participants' eyes from the data:**

Topic 1: The burden on modern eyes! Prolonged digital viewing.

* Approximately 30% of individuals watch digital devices for '8 hours or more' on weekdays. * Over 40% of those in their 20s and 30s watch for over 8 hours.

When asked about weekday digital viewing time, approximately 30% of the total responded '8 hours or more'. Furthermore, over 40% of those in their 20s and 30s fell into this category, highlighting that younger generations are exposed to digital devices for longer periods. This suggests that the normalization of smartphone and computer use is leading to serious eye strain.

Topic 2: Relationship between viewing time and eye discomfort.

* Approximately 60% routinely experience 'heavy eyelids and dry eyes'.

To the question 'Do you experience heavy eyelids or dry eyes in your daily life?', 62.1% responded 'yes' (total of 'feel', 'feel a little', 'feel very much'). Also, to the question 'Have you experienced dry eyes in the past week?', 59.6% answered 'yes', indicating that many people live with eye discomfort daily.

* Impact on daytime performance? Over 70% feel 'sleepy'.

To the question 'Do you feel sleepy during the day?', 74.8% of the total responded 'yes' (total of 'a little sleepy', 'sleepy', 'very sleepy'). Concerns are raised about the impact of eye condition on QOL (Quality of Life) and daytime performance, and it is possible that this sleepiness is related to eye condition.

Topic 3: Caution for those aged 40 and above! Longer device viewing time increases 'eye age'!

* The average 'eye age' measured at the Expo venue was 43.8 years, which was lower than the average actual age of 45.5 years. * Investigating the gap between 'eye age' and actual age and the time spent viewing digital devices (PCs and smartphones), a tendency was confirmed that 'eye age' increases with longer digital viewing time. This trend was particularly noticeable in middle-aged and elderly individuals aged 40s to 60s.

Topic 4: Are all modern people's eyes tired? Over 40% suffer from severe eye fatigue.

* The average eye fatigue score for participants was 64 points. Over 60% had scores above 60, and 40% had scores above 80. Individuals with scores of 80 or higher, despite no difference in monitor viewing time, tended to strongly feel 'digital damage', 'heavy eyelids', and 'daytime sleepiness'.

* Approximately 25% of those with an eye fatigue score of 80 or higher were unaware of their symptoms. This suggests that one in four people may have tired eyes without realizing it.

Topic 5: Correlation between eye age and skin youthfulness! 40% have young skin but high 'eye age'.

* A correlation was found between 'eye age' and skin youthfulness. Looking at individual items of 'eye age' and skin score, 'eye bags' and 'wrinkles' were confirmed to correlate with 'eye age'.

* 40% of individuals had youthful skin but an 'eye age' higher than their actual age. Comparative analysis of this group showed that many experienced daytime sleepiness (TOP2 difference: 6.0pt) and had longer monitor viewing times (TOP2 difference: 12.3pt). Even with young skin, caution is advised. One might be 'losing out' due to their eyes. This suggests a disparity in 'eye age' that can be brought about by monitor viewing time.