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The increasing use of digital devices among adolescents raises concerns regarding eye health, particularly myopia. Non-ergonomic postures, such as using gadgets in a lying position, may increase accommodative stress on the eyes and contribute to visual impairment. To analyze the association between the duration and viewing distance of gadget use in a lying position and the occurrence of myopia among eighth-grade students at SMPN 119 Central Jakarta. An observational analytic study with a cross-sectional design was conducted involving 74 eighth-grade students. Data on gadget use habits, including duration and viewing distance, were collected using a structured questionnaire. Visual acuity was assessed using a Snellen chart. Bivariate analysis was performed using the Chi-square test with a significance level of p < 0.05. Decreased visual acuity was found in 62.2% of respondents. There was no significant association between viewing distance and myopia (p = 0.080). However, a significant association was identified between gadget use duration exceeding two hours per day and the occurrence of myopia (p = 0.002). The duration of gadget use in a lying position was significantly associated with myopia, whereas viewing distance was not. Limiting the duration of gadget use may help prevent visual impairment among adolescents.

Communication tools in today's era that can be carried anywhere are called gadgets. The use of this modern communication tool occurs as an effort to develop technology in the world. Excessive use of gadgets can trigger eye health disorders that result in computer vision syndrome. The purpose of this study was to determine the relationship between gadget use and visual acuity in students of SDN 1 Banda Sakti, Lhokseumawe City. The cross-sectional approach is the research method used, the measuring instrument used is a snellen chart and a gadget usage questionnaire. The sampling technique used was Stratified random sampling with a total of 152 students as respondents. The results of the analysis using the chi-square test were obtained in the right eye, most respondents with good duration and position of gadget use experienced mild visual acuity disorders while those who were not good mostly experienced moderate visual acuity disorders. For the distance and lighting categories when using gadgets, respondents both experienced moderate visual acuity disorders. For the left eye of respondents with good and bad gadget use, most of them had mild visual acuity disorders. It can be concluded that there is a significant relationship between the duration, position, and distance of gadget use and visual acuity in students of SDN 1 Banda Sakti, Lhokseumawe City.

Hypermetropia is a refractive disorder that affects the eye's focus on close objects and can affect academic activities. This study involved 125 students from Ma Chung University Malang, aged 17–24 years, to determine the prevalence of hypermetropia and explore factors that affect their visual health. Data collection was carried out through visual acuity examination using the Snellen chart and questionnaires related to visual habits and duration of gadget use. The results showed that 3.2% of respondents had hypermetropia. Most students (96.8%) used gadgets for more than two hours per day, with 91.2% of them doing so in a lying position, which can increase the risk of eye strain. In addition, symptoms such as blurred vision (58.4%) and eye fatigue (38.4%) were frequently reported. Other risk factors, such as lack of outdoor activities, also contributed to the decline in eye health. Education about healthy visual habits, such as the application of the 20-20-20 rule and regular eye examinations, is essential to prevent worsening of the condition. The results of this study are expected to be a basis for universities in increasing student awareness of the importance of maintaining eye health in the digital era.

Hypermetropia is a refractive disorder that affects the eye's focus on close objects and can affect academic activities. This study involved 125 students from Ma Chung University Malang, aged 17–24 years, to determine the prevalence of hypermetropia and explore factors that affect their visual health. Data collection was carried out through visual acuity examination using the Snellen chart and questionnaires related to visual habits and duration of gadget use. The results showed that 3.2% of respondents had hypermetropia. Most students (96.8%) used gadgets for more than two hours per day, with 91.2% of them doing so in a lying position, which can increase the risk of eye strain. In addition, symptoms such as blurred vision (58.4%) and eye fatigue (38.4%) were frequently reported. Other risk factors, such as lack of outdoor activities, also contributed to the decline in eye health. Education about healthy visual habits, such as the application of the 20-20-20 rule and regular eye examinations, is essential to prevent worsening of the condition. The results of this study are expected to be a basis for universities in increasing student awareness of the importance of maintaining eye health in the digital era.