I actually recommend that, even though they're a little more expensive to afford, that people should almost always be just using the daily contact lenses ... It's much safer for your eye to use a daily disposable than to use a 2-week or a 4-week and be responsible for the cleaning.

Whether using the readers accelerates the progression of dependence on the readers... It's still up for debate. Some studies say maybe yes; some studies say maybe no. But certainly psychologically, we get addicted to good, easy vision.

UV light is right next to blue light. UV light is known to have a lot of adverse effects. It's not really good for our skin ... Similarly, it's not really good on our eyes ... And certainly, over the long-term, UV light will accelerate formation of cataract, which is a blurring... of the lens inside the eye.

One or a few percent of patients will actually have a dry eye problem after LASIK ... If you have dry eye, this might not be a good idea for you—just like contacts might not be a good idea for you if you already have a lot of dry eye.

The truth is that, in most patients, cannabis will lower the eye pressure. The problem is it really only lowers that eye pressure during the period that you're high from the cannabis.

The kids who spend time outdoors are progressing in their nearsightedness less. Their nearsighted prescription is not getting as strong as the kids who are spending more time indoors.

In most people, the development of nearsightedness happens a lot until age 10, a little more through age 20, little more than that in through the 20s up to 30, tiny bit in the 30s up to 40.

The two main risk factors for glaucoma are increasing age—and it usually presents, in most cases, actually after age 40—but also increasing eye pressure. And if your eye pressure is too high, you can't feel that...

20/20 vision means that you can read the smallest letters at 20 feet away that the average healthy person can read at 20 feet away ... Maybe you have 20/200 vision ... That means you can read at 20 feet what a normal person could read at 200 feet.

Myopia is so common. It's more common in Asian populations; it's called an epidemic in China. In California, we have a lot of Asian heritage, or Asian Americans ... At Stanford, we see a lot of myopia in kids and adults.

These well-designed cohort studies did point towards this concept that if you do too much near-work as a kid that you're more likely to develop nearsightedness as you get through those sort of, you know, preteen and even into the teen years.

A lot of people who wear glasses and contacts will report that they have a much higher quality of vision with their contact lens correction than with their glasses correction.

The most common eye treatment purchased by anyone... is for dry eye. And in part, that's because, as we age, our tear quantity goes down and our tear quality goes down.

The number one cause of low vision is actually refractive error—people who need glasses, and especially in other countries, affordability access, can't even get glasses ... The next most common cause of vision. loss is cataract.

The number one cause of irreversible vision loss in the world is glaucoma.

Smoking, including exposure to secondhand smoke, major risk factor for macular degeneration and for the progression and vision loss potentially associated with macular degeneration.

It turns out that our eye pressure also undergoes a circadian rhythm. And it's actually highest at night while we're sleeping, kind of peaks in those early morning hours, then hits a low throughout the early day, and then kind of rises again throughout the afternoon into the evening.

There's actually now data also that red light and... violet light, either of those in small daily doses, can also be used to prevent progression of nearsightedness in... school-age children.

Every baby gets an eye exam, or should be getting an eye exam. And one of the main things that you really just are screening for right when that baby is born right in the nursery, right in those first few days, just look for a red reflex.

Our tears contain enzymes that help break down bacteria and bacterial toxins. And so, for most people, regular eye washing doesn't have to be any part of their standard routine.

If you feel like you've got something in your eye, your ideal eye wash is actually going to be a sterile saline solution, a saltwater solution.

One of the major complications of diabetes is damage to the retina inside the eye, and we call that diabetic retinopathy.