Evaluation of New Color Temperature Adjustment Mode in Preventing Dry Eye and Visual Fatigue

NCT ID: NCT07201493

Last Updated: 2025-10-01

Basic Information

• Recruitment Status: ENROLLING_BY_INVITATION
• Clinical Phase: NA
• Total Enrollment: 25 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-09-15
• Study Completion Date: 2025-12-01

Brief Summary

The purpose of this study was to investigate the effects of visual fatigue and dry eye level under different correlated color temperature modes, and to evaluate the effect of new designed dynamic color temperature change modes on the improvement of visual fatigue and dry eye level.

Detailed Description

The effect of electronic display devices on visual fatigue of human eyes was the primary evaluation index and the primary outcome index of this experiment. Secondary outcome indicators were tear film break-up time, tear lipid analysis, conjunctival congestion score and subjective visual fatigue score. Other outcome indicators were eyeblink detection, accommodative function and Schirmer test. Baseline values of the above metrics were measured separately before each group of trials and then, after 50 minutes of e-text reading, specific values of the different metrics were collected when using different color temperature modes and all valid measurements were statistically compared and analysed. To assess the effect of new designed dynamic color temperature change modes on reducing visual fatigue and dry eye symptoms.

Conditions

Visual Fatigue; Dry Eye

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: PREVENTION
• Blinding Strategy: SINGLE

Study Groups

6500K group

This is the group that performs visual evoked tasks using conventional color temperature mode of whose vaule is 6500K. In this group, the impact of the same text content on the visual fatigue and comphrehensive analysis of tear film were assessed, including but not limited to indicators such as blinking detection, visual function and so on.

Group Type: NO_INTERVENTION

No interventions assigned to this group

sigmoid change group

This is the group that performs visual evoked tasks using dynamic color temperature change mode 1 which changes from 6500K to 4000K. In this group, the impact of the same text content on the visual fatigue and comphrehensive analysis of tear film were assessed, including but not limited to indicators such as blinking detection, visual function and so on.

Group Type: EXPERIMENTAL

color temperature change mode

Intervention Type: BEHAVIORAL

Subjects are asked to read a terminal display device for 50 minutes, featuring texts with different color temperature mode treatments. Specifically, they will read the same text content for 50 minutes with different color temperature mode. The participants will complete a total of 2 sets of tests in a random order.

gradient change group

This is the group that performs visual evoked tasks using dynamic color temperature change mode 2 which changes from 6500K to 4000K. In this group, the impact of the same text content on the visual fatigue and comphrehensive analysis of tear film were assessed, including but not limited to indicators such as blinking detection, visual function and so on.

Group Type: EXPERIMENTAL

color temperature change mode

Intervention Type: BEHAVIORAL

Subjects are asked to read a terminal display device for 50 minutes, featuring texts with different color temperature mode treatments. Specifically, they will read the same text content for 50 minutes with different color temperature mode. The participants will complete a total of 2 sets of tests in a random order.

Interventions

color temperature change mode

Subjects are asked to read a terminal display device for 50 minutes, featuring texts with different color temperature mode treatments. Specifically, they will read the same text content for 50 minutes with different color temperature mode. The participants will complete a total of 2 sets of tests in a random order.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Adult population, regardless of gender.

• Refractive error is less than or equal to -1.5D and both eyes achievecorrected visual acuity of 0.8 or higher.
• Normal intraocular pressure with no organic pathology.
• No apparent symptoms of dry eye.
• Willing to cooperate to complete all the tests.
• Voluntarily signing the informed consent form.

• Active corneal infections such as bacterial, fungal, viral, or other acute or chronic anterior segment inflammations.
• Currently using medications that may lead to dry eye or affect vision and corneal curvature.
• Other ocular conditions, such as dacryocystitis, eyelid disorders and abnormalities, abnormal intraocular pressure, and glaucoma.
• Unable to undergo regular eye examinations.

Exclusion Criteria

• Individuals with strabismus and amblyopia exist.

• Suffering from congenital eye conditions such as congenital cataracts or congenital retinal diseases.
• Those who have undergone intraocular surgery (such as cataract removal, intraocular lens implantation, etc.).
• Individuals with refractive media opacity (such as corneal lesions, lens opacity, etc.).

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Beijing Tongren Hospital

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Beijing Tongren Hospitol,Capital Medical University,, Beijing, Beijing/China

Beijing, Beijing Municipality, China

Countries

China

Other Identifiers

TREC2025-KY185

Identifier Type: -

Identifier Source: org_study_id