comparison of changes in lens inside the eye and color seen by the eye under various lighting conditions

COMPARISON OF ACCOMMODATION AND COLOR VISION AT VARIOUS LEVELS OF LED CORRELATED COLOR TEMPERATURES

Status

Active, not recruiting

Phases

Phase 1

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2019/08/020537

Enrollment

Registered

2019-08-05

Start date

Unknown

Completion date

Unknown

Last updated

2021-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention1: Light (Color Temperature(Color) and Lux Level (Brightness)) Tunable: YEE (Light) Tunable (Xiaomi Company). Model No: YLDP05YL. Control Intervention1: Light: Sunlight(Color temperature r

Eligibility

Inclusion criteria

Inclusion criteria: 1. Age 18 to 35 years 2. Not on any medications 3. No diplopia reported during the ocular motility test 4. Near point of convergence (RAF rule) 5. Amplitude of accommodation (push up RAF rule) normal for age (greater than 10D) 6. Stereo acuity (Titmus circles) of 7. Normal red/green colour vision (Ishihara) 8. Astigmatism of 9. Visual acuity of at least 6/6 in each eye 10. Cover test of

Exclusion criteria

Exclusion criteria: • Any known ocular pathology • Binocular vision anomalies • Systemic diseases affecting vision • Any colour vision defects • Migraine or history of migraine

Design outcomes

Primary

Measure	Time frame
Accommodation-Dioptre, Time-Seconds,Color vision-Errors (number),Color Temperature-KelvinTimepoint: 5 minutes after adaptation to light (Accommodation measurement), next intervals (1 minute accommodation relaxation time is given), then continued on between each intervals for accommodation. For color vision only adaptation time and no accommodation relaxation time.Total timing of 2 hours per subject.	—

Measure

Time frame

Accommodation-Dioptre, Time-Seconds,Color vision-Errors (number),Color Temperature-KelvinTimepoint: 5 minutes after adaptation to light (Accommodation measurement), next intervals (1 minute accommodation relaxation time is given), then continued on between each intervals for accommodation. For color vision only adaptation time and no accommodation relaxation time.Total timing of 2 hours per subject.

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Secondary

Measure	Time frame
Pupil size-Millimeter,CRI-Color Rendering IndexTimepoint: Pupil size measurement is taken which is done immediately after 5 minutes adaptation time, CRI and color temperature is interrelated and is measured during the lighting setup.	—

Countries

India

Contacts

Public ContactRadhika

Manipal Academy of Higher Education (MAHE), Manipal

shailesh.kr@manipal.edu8050112974

Outcome results