The Science · caliberix.com/science

Light. Environment. Health. Measured.

Articles on photobiology and environmental health science — specific numbers and practical implications for parents and professionals.

Featured
Study Light · July 2026

The night Mateo's eyes started to fail — and what his parents never knew to measure

It began as squinting at the whiteboard. Here are the four numbers in his study space that nobody had measured.

Read the full article →
4
Numbers nobody
measured
Foundation · Evergreen Reading
Eye Care · Evergreen
Why vision problems in children often go unnoticed
Children don't know what clear vision looks like. Here's what parents miss.
6 min readEvergreen
 Light & Biology · Evergreen
The human eye was never designed for artificial light. Here's what happened when we gave it 16 hours of it every day.
300,000 years of evolution. 130 years of electric light. The biology never caught up. Here's what that means for every person reading this.
7 min readEvergreen
 Environment · Evergreen
The room your child spends most time in is the least measured space in your home
You measure water quality, air quality, and temperature. What about the light in the study room?
5 min readEvergreen
Screens · Evergreen
Screens aren't going away. The question is whether the environment around them is safe.
The screen time debate has been asking the wrong question for a decade. The screen is rarely the primary problem. The room around it is.
6 min readEvergreen
Stories · July 2026
Light Science
The invisible number on your bulb that's keeping your child awake
Every LED bulb has a CCT rating. Here is why it matters more than brightness — and what to do about it tonight.
7 min readJuly 2026
 Eye Health
Tired eyes at a screen? The room around it is part of the picture.
Computer Vision Syndrome has a name, and the room around the screen is part of it. Here is what your office never told you.
8 min readJuly 2026
 Measurement
You own a thermometer. You don't own this. Why?
You measure temperature, weight, and vision. But not the light environment your child studies in for hours every day. The tools now exist. Here is what changes.
6 min readJuly 2026