Timed light glasses and shift plans for nurses and night-shift teams
TL;DR Daybreaklens pairs light-emitting glasses with an app that tells night-shift staff when to soak up bright light and when to avoid it. Hospitals and BPOs pay per worker, and what they're buying is fewer drowsy hours on duty. It sells better shift adjustment and doesn't promise to treat any disorder.
Night work wears people down, and the numbers from Indian hospitals are blunt. Among 130 nurses at a Bangalore tertiary hospital, 43.07% met the criteria for shift work disorder[1]. A second Bangalore study of 318 hospital staff found insomnia symptoms in 39.9% and excessive daytime sleepiness in 19.8%[2].
So where does all that sleepiness land? Right in the 3 a.m. medication round or the overnight call queue.
Most employers respond with tea, a few rota tweaks and not much else. Staff are rarely told how the timing of light shapes their body clock, and even fewer have a way to do something about it.
What it does, in regulatory terms: wellness only, offering timed light exposure for alertness and sleep timing. Daybreaklens makes no claim to treat seasonal affective disorder, depression or shift work disorder. If you claim to treat a disorder then the Medical Devices Rules 2017 kick in, so get a written regulatory opinion on the wording before you launch.
Here's how it works - each worker enters their rota and the app sets short light sessions from the glasses early in the night shift, tells them to wear dark lenses on the way home and then nudges them to sleep at fixed times. Employers only see anonymous take-up and self-reported alertness scores.
The seed idea went after seasonal affective disorder. India's evidence for winter-pattern SAD is thin though. One PGIMER follow-up found little seasonality[3], and a 14-centre study saw SAD in 9.44% of a bipolar group, not the general population[4]. Night shifts are the light problem India actually has at scale, so that's where Daybreaklens aims.
The wearer is a nurse, BPO agent or warehouse supervisor on rotating nights. The payer is the employer - a hospital nursing head, a BPO's workplace-health budget or a logistics firm that's worried about errors. Retail glasses are priced for individuals, and the best-known European pair sells for €229, about ₹24,800[5]. An employer programme would need a much lower cost per worker per year to get signed, and that's what the sprint has to test.
The research has firmed up. A 2021 meta-analysis of 21 trials found light therapy gave a large shift in body-clock timing and a small to medium cut in sleepiness for shift workers[6]. A 2022 review of 14 studies found blue-enriched white light at 5000 K or above worked most consistently[7]. LED and battery costs keep falling too, which makes an affordable Indian version plausible.
There's no public figure for wearable light therapy in India. One market research firm sizes India's whole light therapy market at US$40.6M in 2023 (about ₹393 Cr), mostly handheld skin devices, with sleep disorders and SAD as smaller uses[8].
That is a neighbour, not the real thing. The real denominator is India's night-shift workforce, and I couldn't find a reliable count of it anywhere.
There's no Indian maker of light-therapy glasses that I could find. One Belgian brand has sold since 2006 and claims over 300,000 users[5]. A second brand runs app-based sleep and shift programmes from its glasses, but its retail page cites no studies[9]. Both sell to individuals.
The open space is an employer programme built around Indian rotas and priced per worker.
| Difficulty | Moderate (44/100) |
| Starting capital | ₹1.2–2.2 Cr |
| Time to launch | 9–12 months |
The glasses can start from a contract manufacturer's design, adapted and safety-tested. The harder work is getting people to change a habit. Workers have to wear them at the right minutes on a chaotic shift and employers need proof of fewer sleepy hours before they renew, which is no easy task. And hospitals may simply fit brighter lights instead.
No device licence if you stick to wellness claims. The wording decides it.
Building this outside India? The categories above usually have a local equivalent, so check with your own regulator.
Don't let AI diagnose sleep problems or promise health results. Daybreaklens is a wellness product, and anyone with real sleep trouble should see a doctor.
Want to work out the AI layer for Daybreaklens? Talk to Yash →
Here's what can go south -
I think this is worth a look if you know hospital nursing operations or BPO workforce teams and can run a careful pilot. If you want a consumer gadget then skip it, because Indian demand at imported-glasses prices is narrow.
Before anything else, prove one thing - a 40-person pilot ward shows a measurable drop in self-rated sleepiness and keeps wearing the glasses past week four.
My estimate is ₹1.2–2.2 Cr, covering design, safety testing, the app and employer pilots. The kit breaks it down.
Not a device licence if you make wellness claims only. Claim to treat a disorder and the Medical Devices Rules apply.
Yes, night shifts exist everywhere. Wellness and device claims are policed differently in each country, so check with your local regulator.
The free Daybreaklens validation kit has the line-by-line capital breakdown, the effort scoring, the claims and safety checklist, a 14-day validation sprint with pass/fail targets, a 90-day launch plan, 10 interview questions for night-shift staff and employers, and 5 assumptions to test. Download the kit →
Thinking about building Daybreaklens or something close to it? The make-or-break bit is a pilot that shows employers fewer drowsy hours without drifting into medical claims, and that's the kind of thing I help founders with. If you need a hand, you know where to find me. Talk to Yash →
For illustration only. Names are fictional and ideas hypothetical; sourced facts are real but may be out of date. Nothing here is legal, financial or professional advice, and Yash Khatri is not personally liable for any use of it. Read the full disclaimer.