Myopia. Myopia
Conditions
Interventions
Intervention 1: Intervention group: The first intervention group will study a text on the computer at a distance of 40 cm for one hour in an ambient light intensity of 100 to 200 lux. Intervention 2:
Sponsors
Iran University of Medical Sciences
Eligibility
Sex/Gender
All
Age
15 Years to 25 Years
Inclusion criteria
Inclusion criteria: Individuals age should be within the range of 15 to 25 years Uncorrected visual acuity should be 20/20 or superior The spherical equivalent refraction should be within the range of +0.50 to -0.50 diopters and with astigmatism not exceeding one diopter Sign informed consent
Exclusion criteria
Exclusion criteria: Individuals with ocular diseases or systemic diseases that could impair vision. Individuals with any prior history of ocular surgery Individuals that used contact lenses or spectacles during one month preceding the study Individuals that have education level lower than high school.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Spherical equivalent refractive changes after near work. Timepoint: Immediately before and after near work. Method of measurement: Spherical equivalent refraction will be measured using autorefractometer. | — |
Secondary
| Measure | Time frame |
|---|---|
| Changes of ocular biometry including Axial length, anterior chamber depth, crystalline lens thickness and vitreous chamber depth. Timepoint: immediately before and after near work. Method of measurement: Biometric indices of the eye will be measured using Lenstar device. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public ContactEbrahim Jafarzadehpour
Iran University of Medical Sciences
Outcome results
None listed