Ambient Light Levels in the Kindergarten and Schools and the Relation to Refractive Development

NCT ID: NCT02854891

Last Updated: 2016-08-04

Basic Information

• Recruitment Status: UNKNOWN
• Total Enrollment: 200 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2016-08-31
• Study Completion Date: 2017-09-30

Brief Summary

Myopia, the most common human eye disorder, is a phenomenon characterized by an unconstrained elongation of the eye globe There are number of theories concerning the environmental effect on the emmetropization process, most are related to childhood exposure to outdoor activity, near work and sleep with night light. Studies in lab animals found an association between intensity of ambient lighting and myopia development.

In this study, the investigators will examine the ambient light in kindergarten and schools and their relation to refractive error. Diurnal luminance in kindergarten and school class room will be measured and correlated to biometric measures such as refraction, axial length and keratometry.

Conditions

Myopia

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Interventions

autorefractometer, A-scan ultrasound

A measurement of refraction will be made by the Autorefractometer. A measurement of the eyes' biometer data will be made by A-scan ultrasound.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Every child that have been studying in the same class for the last 6-12 months (kindergarten and school respectively).

Exclusion Criteria

• Noncooperative child or parents.
• Ocular surgery.
• Ocular genetic disease.

• Minimum Eligible Age: 4 Years
• Maximum Eligible Age: 17 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Hillel Yaffe Medical Center

OTHER_GOV

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Other Identifiers

0027:16

Identifier Type: -

Identifier Source: org_study_id