Open AccessDETERMINATION OF SCREEN TIME FOR USING DIGITAL DEVICES WITHOUT DAMAGING EFFECT ON LACRIMAL FILM
Author(s) -
Dong Fang Hui,
I.M. Bezkorovayna
Publication year - 2022
Publication title -
aktualʹnì problemi sučasnoï medicini: vìsnik ukraïnsʹkoï medičnoï stomatologìčnoï akademì
Language(s) - English
Resource type - Journals
eISSN - 2077-1126
pISSN - 2077-1096
DOI - 10.31718/2077-1096.22.1.29
Subject(s) - ophthalmology , meniscus , digital image analysis , medicine , surgery , optics , computer science , computer vision , incidence (geometry) , physics
. The changes in the thickness of lipid layer of lacrimal film, the height of the lacrimal meniscus, and non-invasive time of the lacrimal film rupture under the exposure to digital devices up to 60 minutes are requiring in-depth investigation. This justifies the needs for extensive research to determine the safe continuous time spent in front of the screen of digital devices. The aim of this study is to determine the safe time for work with digital devices that does not result in significant changes in the tear film indices. Materials and methods. We examined 335 people (670 eyes) aged from 18 to 48 years, an average age is 28 ± 0.74 years. The study was conducted in two stages: during I stage we analyzed the tear film without the exposure to digital devices; during II stage we analyzed changes in the tear film after the work with digital devices. The analysis of the tear film composition after the exposure to digital devices for 20; 30; 40 and 60 minutes was carried out. Results. Following 20 minute exposure, the thickness of the lipid layer did not differ from the initial data obtained in the subjects (p>0.05); NIBUT also did not change and was similar to the initial indicators (p>0.05); the frequency of blinking began to decrease by 3% of subjects compared with the initial data, however, the difference was not reliable (p>0.05). After 30 minute exposure, there was no significant change in the lipid layer of the tear film, the height of the lacrimal meniscus and the tear film rupture (p> 0.05). Only the frequency of blinking decreased down by 12% of all participants compared with the initial data (p 0.05); the blinking frequency decreased by 26% of all participants compared to the initial data (p <0.01). After 60 minute exposure, the number of those examined with a thinning of the lipid layer increased to 16% (p <0.01), of which 3% had a significant thinning of the lipid layer; the number of examined patients with pathological indices of the lacrimal meniscus increased by 16% (p <0.01); the number of patients with NIBUT changes increased by 14% (p <0.01); the frequency of blinking decreased in 50% of all subjects compared to the initial data (p <0.01). Conclusion. The influence of computer devices for 20 minutes does not significantly affect the qualitative composition of the tear film.