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All Journal Bioscientia Medicina : Journal of Biomedicine and Translational Research
I Made Ady Wirawan
Department of Public Health and Preventive Medicine, Faculty of Medicine, Universitas Udayana, Denpasar, Indonesia
Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Neuroscience

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Effect of Simulated and Real Aircraft Cabin Environments on Tear Film Parameters in Dry Eye Disease: A Meta-Analysis Jelly Vianti Fransisca Oeitano; I Gusti Ayu Made Juliari; Ida Ayu Ary Pramita; I Made Ady Wirawan
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 6 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i6.1617

Abstract

Background: Air travel exposes passengers to environmental stressors, such as reduced cabin pressure and low humidity, which may exacerbate ocular surface conditions, particularly pre-existing dry eye disease (DED). This meta-analysis quantifies the impact of real and simulated aircraft cabin environments on tear film parameters, ocular surface biomarkers, and intraocular pressure (IOP). Methods: Following PRISMA 2020 guidelines, a systematic search (January 2000–March 2026) identified ten eligible studies comprising 445 participants, with two providing complete quantitative data for meta-analytic pooling (10 effect sizes). Results: Using a random-effects model, the overall pooled standardised mean difference (SMD) was 0.97 (95% CI: -0.67 to 2.61), indicating a large but non-significant effect with substantial heterogeneity (I2 = 97.23%). Subgroup analyses revealed a non-significant pooled effect for tear film outcomes (Hedges' g = 0.71), contrasted by a significant elevation in IOP for gas-filled eyes (g = 1.92; p = 0.001). Despite the non-significant overall pooled estimate, individual effect sizes demonstrated large, clinically meaningful reductions in tear break-up time (TBUT) and significant increases in both corneal staining and inflammatory biomarkers (MMP-9 and IL-6). Egger's test showed no publication bias, though GRADE certainty remained low to very low. Conclusion: Aircraft cabin environments induce clinically significant deteriorations in tear film stability, ocular surface integrity, and inflammation, alongside significant IOP elevations in susceptible individuals. These findings underscore the necessity of pre-flight ocular counselling and targeted preventive strategies for at-risk passengers, highlighting the need for future large-scale, standardised investigations.
Prevalence and Etiology of Ocular Morbidity in Maritime Environments: A Systematic Review and Meta-Analysis of Passenger and Crew Data Iska Novi Udayani; I Gusti Ayu Made Juliari; Ida Ayu Ary Pramita; I Made Ady Wirawan
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 3 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i3.1526

Abstract

Background: The maritime environment constitutes a unique epidemiological enclosure characterized by isolation, specific occupational hazards, and distinct environmental stressors including hyper-salinity and high ultraviolet (UV) albedo. While gastrointestinal and respiratory outbreaks at sea are well-documented, the burden of ocular morbidity remains under-quantified. This study aims to determine the prevalence and etiology of ocular emergencies, stratifying risks between industrial seafarers (crew) and recreational travelers (passengers). Methods: A systematic review and meta-analysis were conducted following PRISMA 2020 guidelines. Data were extracted from eight observational studies (2014–2024) covering expedition cruises, commercial shipping, and leisure voyages. To address population heterogeneity, a stratified analysis was performed: Track A analyzed occupational trauma in crew, while track B analyzed environmental morbidity in passengers. A random-effects model was used to calculate pooled proportions with 95% Confidence Intervals (CI), accompanied by a leave-one-out sensitivity analysis. Results: The dataset represented a combined population of over 5,000 maritime subjects. The pooled prevalence of ocular involvement in maritime trauma cases was 18.4% (95% CI: 12.1%–25.5%). Etiological analysis of crew injuries revealed a dominance of mechanical trauma, specifically metallic foreign bodies (40.5%), followed by chemical burns (26.2%). In contrast, passenger morbidity was driven by environmental factors (photokeratitis, dry eye) and infectious conjunctivitis. Conclusion: Ocular emergencies represent a significant, preventable burden in maritime travel, with distinct risk profiles for crew and passengers. The high rate of occupational trauma suggests a failure in personal protective equipment (PPE) compliance, while the environmental burden reflects the dry ship phenomenon. Mandatory protective eyewear policies and the integration of anterior-segment tele-ophthalmology are critical interventions.
Effect of Simulated and Real Aircraft Cabin Environments on Tear Film Parameters in Dry Eye Disease: A Meta-Analysis Jelly Vianti Fransisca Oeitano; I Gusti Ayu Made Juliari; Ida Ayu Ary Pramita; I Made Ady Wirawan
Bioscientia Medicina : Journal of Biomedicine and Translational Research Vol. 10 No. 6 (2026): Bioscientia Medicina: Journal of Biomedicine & Translational Research
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/bsm.v10i6.1617

Abstract

Background: Air travel exposes passengers to environmental stressors, such as reduced cabin pressure and low humidity, which may exacerbate ocular surface conditions, particularly pre-existing dry eye disease (DED). This meta-analysis quantifies the impact of real and simulated aircraft cabin environments on tear film parameters, ocular surface biomarkers, and intraocular pressure (IOP). Methods: Following PRISMA 2020 guidelines, a systematic search (January 2000–March 2026) identified ten eligible studies comprising 445 participants, with two providing complete quantitative data for meta-analytic pooling (10 effect sizes). Results: Using a random-effects model, the overall pooled standardised mean difference (SMD) was 0.97 (95% CI: -0.67 to 2.61), indicating a large but non-significant effect with substantial heterogeneity (I2 = 97.23%). Subgroup analyses revealed a non-significant pooled effect for tear film outcomes (Hedges' g = 0.71), contrasted by a significant elevation in IOP for gas-filled eyes (g = 1.92; p = 0.001). Despite the non-significant overall pooled estimate, individual effect sizes demonstrated large, clinically meaningful reductions in tear break-up time (TBUT) and significant increases in both corneal staining and inflammatory biomarkers (MMP-9 and IL-6). Egger's test showed no publication bias, though GRADE certainty remained low to very low. Conclusion: Aircraft cabin environments induce clinically significant deteriorations in tear film stability, ocular surface integrity, and inflammation, alongside significant IOP elevations in susceptible individuals. These findings underscore the necessity of pre-flight ocular counselling and targeted preventive strategies for at-risk passengers, highlighting the need for future large-scale, standardised investigations.
Co-Authors I Gusti Ayu Made Juliari Ida Ayu Ary Pramita Iska Novi Udayani Jelly Vianti Fransisca Oeitano