View clinical trials related to Asthenopia.
Filter by:Operational military personnel are increasingly using virtual or augmented reality headsets in the field or in training. However, these devices cause a conflict between accommodation (focus to see clearly) and vergence (alignment of both eyes on the object being viewed) that can be a source of visual fatigue and altered visual and perceptual abilities. Although techniques exist to limit this conflict for screen-based stimuli, the use of helmet visuals (or immersive headsets) adds technological complexity. Indeed, since accommodation on the screen of the helmet visual is impossible (i.e., distance too small) for the human visual system, lenses are used to virtually shift the image (referred to as a collimated image) so that accommodation can occur much further away. However, this material configuration also modifies the vergence, thus causing a conflict between accommodation and additional vergence that persists regardless of the attenuation technique used. In this study, the investigator proposed to modify the image display to take into account the technical features of the helmet to correct this techno-dependent conflict. This study is aimed at determining whether the setting recommended by the algorithm developed by the investigator limits visual fatigue better than the conventional setting recommended by manufacturers or a subjective setting controlled by the user.
In Taiwan, the prevalence of sleep problems, myopia, and dental caries in school-age children is high. Little is known regarding the implementation of oral and vision health outcomes around bedtime. A bedtime routine intervention was conducted to improve children's oral, vision and sleep health.
The present study tests the hypothesis that Stulln eyedrops improve accommodative functions by improving the short term facility of ciliary muscles that can be transferred into long-term adaptation. To test this, the investigators propose to conduct a prospective randomized control trials where participants with accommodative dysfunctions are randomly assigned to four groups: control, Stulln only and Stulln plus vision training. The investigators' theory predicts that the efficacy of Stulln will be augmented by vision training.
To evaluate subjective visual performance and objective visual parameters when wearing ophthalmic lenses with extra power (+0.4 D or +0.6 D), and ophthalmic lenses with a selective blue cut filter.
The purpose of this study is to evaluate the potential for supplementation with black currant to support eye health among otherwise healthy adult women who spend 6+ hours per day using digital screens.
This study aims to evaluate the efficacy and safety of 3% Diquafosol Ophthalmic Solution for visual display terminal (VDT)-associated dry eye and to investigate the mechanism of treatment.
To evaluate the effects and safety of the steam eye mask with acupoints stimulation by the moist heat of approximately 40 degree C for 20 minutes and massage acupoints on eyebrows for eye fatigue, dry eye symptoms and symptom-induced decline of Quality of life (QoL) in VDT users.
A retrospective and prospective study to determine if the use of ambient lighting during screening colonoscopy is well tolerated and if ambient lighting will help physicians maintain adenoma detection rates while decreasing symptoms of eye strain as the day progresses.
The primary aim of the current study is to conduct a cluster-randomized control trial to evaluate the effectiveness of a novel digital intervention in reducing anxiety and digital eye strain compared to usual care among Chinese children during the period of home confinement.
Despite its prevalence, the ocular causes of eye fatigue or unknown and may be related to the cornea/contact lens surface, the accommodative system, the convergence system, overall postural/muscle fatigue, or a combination of these or other causes. The current study aims to systematically investigate the incremental benefits in ameliorating eye fatigue.