None listed
Conditions
Interventions
Intervention1: Blue-blocking lenses
: 3 types of Blue-blocking lenses:
Type I: Crizal Prevencia, Type
II: Zeiss Dura Vision
Blue Protect, Type III:
Placebo-untinted lens
Duration of the intervention-
Sponsors
Nishitha G
Eligibility
Inclusion criteria
Inclusion criteria: 1. age between 18 to 35 years include both male and female 2. literate 3. basic English proficiency 4. regular sleep schedule for 7 to 8 hours where bedtime 10 to 11 pm and wakeup time 6 to 7 am IST 5. global PSQI score less than or equal to 5 6. refractive error with corrected distance VA better than or equal to 20/25 with a healthy retina
Exclusion criteria
Exclusion criteria: 1. any ocular pathology 2. any psychological and neurological disorders, intake of drugs, smoking, alcoholism, intake of caffeine >2 cups/day or >400 mg/day 3. any systemic illness
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| i. Sleep score using Global PSQI scoring (Good sleep indicates PSQI less than 5 and Poor sleep greater than 5) ii. Cognitive test using Mini-Cog (quantitative) (Normal: Score 3-5; Cognitive impairment: Score 0-2) iii. Pre-frontal cortical responses using ERP (target P300 amplitude in µV and P300 latency in msec) while performing N-back task when exposed to Blue LED (in lux). iv. Protective efficacy of blue light blocking lenses I, II, and Placebo lens III when exposed to Blue LED.Timepoint: Baseline, before and after 30 min of blue light exposure, and after 30 min of exposure with blue blocking lenses. | — |
Secondary
| Measure | Time frame |
|---|---|
| i. Protective efficacy of blue light blocking lenses I (Crizal Prevenncia), II (DuraVision BlueProtect), and Placebo lens III (Untinted) when exposed to Blue LEDTimepoint: 30 minutes of exposure to blue LED with each blue-blocking lens. | — |
Countries
India
Contacts
Public ContactNishitha G
Manipal college of health professions, Manipal academy of higher education
Outcome results
None listed