Evaluating the Effectiveness of Comfort Reading Mode in Preventing Dry Eyes and Visual Fatigue

Capital Medical University

Status: Completed

Conditions: Visual Fatigue

Treatments: Behavioral: comfortable reading mode

Study type: Interventional

Funder types: Other

Identifiers

NCT07032909

TREC2025-KY099

Details and patient eligibility

About

The purpose of this study was to investigate the effects of visual fatigue and dry eye level under different reading background polarities and different text colours, and to evaluate the effect of comfortable reading mode on the improvement of visual fatigue and dry eye level

Full 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 film height, and subjective visual fatigue score. Other outcome indicators were blink detection, ocular axial length measurement, accommodative function and retinal fundus blood flow. Baseline values of the above metrics were measured separately before each group of trials and then, after 45 minutes of e-text reading, specific values of the different metrics were collected when using different reading modes and all valid measurements were statistically compared and analysed. To assess the effect of comfortable reading modes on reducing visual fatigue and dry eye symptoms.

Enrollment: 35 patients

Sex: All

Ages: 20 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Adult population, regardless of gender.
• Refractive error is less than or equal to -2.5D 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.

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.).
• Only one eye meets the inclusion criteria.
• 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.

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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35 participants in 5 patient groups

yellow background and black text mode 1 Group

Experimental group

Description:

This is the group that performs visual evoked tasks using yellow background and black text mode 1. In this group, the impact of the same text content on the visual fatigue, and tear break-up time were assessed, including but not limited to indicators such as reading efficiency, blinking detection, visual function and retinal fundus blood flow.

Treatment:

Behavioral: comfortable reading mode

yellow background and black text mode 2 Group

Experimental group

Description:

This is the group that performs visual evoked tasks using yellow background and black text mode 2. In this group, the impact of the same text content on the visual fatigue, and tear break-up time were assessed, including but not limited to indicators such as reading efficiency, blinking detection, visual function and retinal fundus blood flow.

Treatment:

Behavioral: comfortable reading mode

black background and white text mode Group

Experimental group

Description:

This is the group that performs visual evoked tasks using black background and white text mode. In this group, the impact of the same text content on the visual fatigue, and tear break-up time were assessed, including but not limited to indicators such as reading efficiency, blinking detection, visual function and retinal fundus blood flow.

Treatment:

Behavioral: comfortable reading mode

black background and yellow text mode Group

Experimental group

Description:

This is the group that performs visual evoked tasks using black background and yellow text mode. In this group, the impact of the same text content on the visual fatigue, and tear break-up time were assessed, including but not limited to indicators such as reading efficiency, blinking detection, visual function and retinal fundus blood flow.

Treatment:

Behavioral: comfortable reading mode

white background and black text mode Group

No Intervention group

Description:

This is the group that performs visual evoked tasks using white background and black text mode. In this group, the impact of the same text content on the visual fatigue, and tear break-up time were assessed, including but not limited to indicators such as reading efficiency, blinking detection, visual function and retinal fundus blood flow.