Eyes · Myopia · Screens

Story

Connected to · 3

synergy · 1

Morning Light & Circadian
Outdoor daylight does two jobs at once. In a randomized trial, schoolchildren given an extra 40 minutes outdoors a day developed less new myopia over three years. The same light also sets the body clock through a class of light-sensing cells in the retina (ipRGCs). Sending a child outside gets both benefits.

cofactor · 1

Vitamin A
Vitamin A is the raw material for rhodopsin, the light-sensing protein in the retina's rod cells, so the first thing to fail when it runs short is vision in dim light, known as night blindness. It governs seeing in the dark, not how nearsighted you are; marketing often blurs the two.

regulates · 1

Lutein + Zeaxanthin
Lutein and zeaxanthin concentrate in the macula, the center of the retina, and the people with trial evidence for an eye-health formula are those who already have intermediate macular degeneration. Myopia means the eyeball has grown too long, and no supplement can shorten it, so protecting the macula and preventing myopia are separate problems.

Read full story

Stop 1/5

How the eye focuses

EVIDENCERCT 1

READ THE ORIGINAL

Think of the eye as a camera. Light passes first through the cornea, the clear dome at the very front of the eye, and then through the lens behind it. Together they bend the light and bring it to a point on the retina, the light-sensing layer at the back of the eye. You see sharply only when that point lands exactly on the retina.

Myopia (nearsightedness) means the focus lands in front of the retina, so distant things look blurry. It is rising fast among young people in East Asia, and the main reason is not a faulty lens: the camera body has grown too long. So the realistic goal with myopia is to keep it from getting worse, not to cure it. For children, the prevention backed by a is more time in bright outdoor light, which is not quite the same thing as less reading and fewer screens.

A few situations are not ordinary myopia: sudden loss of vision, a fixed shadow or a burst of new flashes and floaters in your field of view, or eye pain with a red eye and nausea or vomiting. If any of these happens, see an ophthalmologist or go to the emergency department promptly.

Educational content, not medical advice — consult a clinician.

Back

Eyes · Myopia · Screens

Story

Connected to · 3

synergy · 1

Morning Light & Circadian
Outdoor daylight does two jobs at once. In a randomized trial, schoolchildren given an extra 40 minutes outdoors a day developed less new myopia over three years. The same light also sets the body clock through a class of light-sensing cells in the retina (ipRGCs). Sending a child outside gets both benefits.

cofactor · 1

Vitamin A
Vitamin A is the raw material for rhodopsin, the light-sensing protein in the retina's rod cells, so the first thing to fail when it runs short is vision in dim light, known as night blindness. It governs seeing in the dark, not how nearsighted you are; marketing often blurs the two.

regulates · 1

Lutein + Zeaxanthin
Lutein and zeaxanthin concentrate in the macula, the center of the retina, and the people with trial evidence for an eye-health formula are those who already have intermediate macular degeneration. Myopia means the eyeball has grown too long, and no supplement can shorten it, so protecting the macula and preventing myopia are separate problems.

Read full story

Stop 1/5

How the eye focuses

EVIDENCERCT 1

READ THE ORIGINAL

Think of the eye as a camera. Light passes first through the cornea, the clear dome at the very front of the eye, and then through the lens behind it. Together they bend the light and bring it to a point on the retina, the light-sensing layer at the back of the eye. You see sharply only when that point lands exactly on the retina.

Myopia (nearsightedness) means the focus lands in front of the retina, so distant things look blurry. It is rising fast among young people in East Asia, and the main reason is not a faulty lens: the camera body has grown too long. So the realistic goal with myopia is to keep it from getting worse, not to cure it. For children, the prevention backed by a is more time in bright outdoor light, which is not quite the same thing as less reading and fewer screens.

A few situations are not ordinary myopia: sudden loss of vision, a fixed shadow or a burst of new flashes and floaters in your field of view, or eye pain with a red eye and nausea or vomiting. If any of these happens, see an ophthalmologist or go to the emergency department promptly.

Educational content, not medical advice — consult a clinician.