How To Find Your Dominant Eye

Dominant Eye Test

Example of a quick test to find your dominant eye.

Your dominant eye is the one your brain favors when it process visual input. Most people instinctively use their dominant eye when looking through a telescope, aiming a weapon or looking through a camera’s viewfinder.

If you’re not sure which eye is dominate, here’s a simple test:

  1. Extend your arms in front of you with your palms facing away.
  2. Bring your hands together, forming a small hole by crossing the thumbs and fore fingers.
  3. Choose a small object about 15-20 feet away from you. With both eyes open, focus on the object as you look through the small hole.
  4. Close one eye and then the other. When you close one eye, the object will be stationary. When you close the other eye, the object should disappear from the hole or jump to one side.
  5. If the object does not move when you cover one eye, then that eye is dominant. The eye that sees the object and does not move is the dominant eye.

It’s estimated that 80% of the world’s population is right eye dominant. Contrary to popular belief, eye dominance doesn’t always correlate with hand dominance.

Are “Old Eyes” Inevitable?

What are “old eyes”?

The technical term for “old eyes” is presbyopia. Most people know it as an almost sudden struggle to read resulting in squinting that then necessitates the use of reading glasses. Other symptoms include eyestrain, headaches and fatigue from up-close work. For most people, presbyopia strikes sometime after age 40.

What’s really happening when presbyopia occurs is that eyes are losing their flexibility due to a change in the lens’ proteins in addition to loss of elasticity in muscles surrounding the eyes. These age-related occurrences make focusing on close objects more difficult.

Can “old eyes” be reversed?

Up until rather recently, corrective lenses were the only solution once “old eyes” hit. However, researchers at UC Berkley and Tel-Aviv University have “found some evidence that eye exercises may be albe to help presbyopes improve their vision appreciably.” What’s interesting is that this study showed that exercising the brain, not the eyes, provided the improvement. They think this happened by the brain’s improvement to interpret blurry images rather than any change in the eye itself. More research needs done before knowing for sure if “brain exercises” might be able to provide improvement for presbyopia.

For now, unfortunately, presbyopia is not reversible in any form.

Can “old eyes” be prevented?

Also unfortunately, presbyopia cannot be completely prevented either. However, experts say that it can be postponed, and its severity lessened. Here’s how:

  1. Visit your optometrist regularly, and have any farsightedness corrected. Uncorrected farsightedness can cause presbyiopa to set in sooner that it would otherwise.
  2. Avoid up-close work for long-periods of time. Up-close work tires the eye muscles, and tired eye muscles make correcting presbyiopia more difficult.
  3. Protect your eyes from sunlight. This means staying out of direct sunlight, or, if you are in the sun, wearing UV sunglasses to protect your eyes.
  4. Eat a healthy diet. In addition to a well-balanced diet, there are also certain foods as well as vitamins that can help keep eyes healthier over your lifetime.
  5. Take special consideration when working with a computer, especially when working with it all day long. Those who work with a computer most of the day have increased problems caused by this up-close work.

Stay tuned for an upcoming article titled “Putting Your Eyes On A Diet” where we look at what elements of a healthy diet contribute to healthier eyes over your lifetime.

Related Reading

Check out these articles related to the topics discussed above to help you postpone the onset of “old eyes.”

12 Eye Care Tips for National Eye Care Month

How Does Computer Use Affect Children’s Vision?

Exercising Your Eyes

A Lesson from Anderson Cooper – Your Eyes CAN Get Sunburned

5 Reasons to Wear Sunglasses in the Winter

12 Eye Care Tips for National Eye Care Month

Eye Care Tips

For every twenty minutes you’re staring at a computer screen, give your eyes at least a thirty second break.

So what did the crew here at Safety Glasses USA toast to on this New Year’s Eve? To January being National Eye Care Month, of course! Safety is not only business to us – it’s personal. We know all the in’s and out’s of safety glasses, and we love answering safety glasses questions from our Facebook and Twitter followers. Let’s cheers to the state-of-the-art technology behind the safety glasses that protect those inquisitive eyes of ours, and start 2012 with 12 must-do eye care tips for National Eye Care Month!

#1: Nutrition Matters. You’d better eat your carrots – and omega-3 fatty acids, leafy green veggies, and flax seed! A healthy, well-balanced diet not only makes you feel great, but can help keep your eyes healthy and sparkling.

#2: Give Them A Break. We often get so engrossed in our computers that we forget to give our eyes a rest. The rule of thumb goes that for every twenty minutes you’re staring at a computer screen; give your eyes at least a thirty second break.

#3: Keep Them Shaded. If you have to squint, you’d better wear sunglasses, like our so-sleek Oakley Sunglasses or Revo Sunglasses. You’re protecting your skin from UV light with sunscreen, so keep your eyes in the shade by wearing sunglasses.

#4: Get To The Gym. Although there isn’t a concrete link, there has been data to backup the benefits of aerobic exercise in reducing eye pressure, which can be helpful to glaucoma sufferers. Exercise is a wonderful stress reliever, too!

#5: Write Right. Don’t over-work your eyes when writing – if you’re writing with your right hand, make sure there’s ample light on the left side of the paper to prevent shadows.

#6: Blink. Blinking creates natural tears in your eyes, helping your peepers maintain an optimal environment. We often blink less when engrossed in work or in an interesting subject, so make a conscious effort to blink more, or use eye drops to simulate natural tears.

#7: Soothe Tired Eyes. Don’t make yourself, or your eyes, suffer when you’re tired. Take a cue from spas by placing thin cucumber slices over your eyes for 5-10 minutes. If you just so happen to rub on a face mask, even better!

#8: Sleep It Off. No one likes the look of puffy eyes, but it’s more than that – puffy eyes are sore eyes. Do your best to consistently get at least seven hours of sleep each night to wake up with well-rested eyes.

#9: Safety First. How many times have you said “It’ll just take me a second, I don’t need to wear safety glasses.” Those simple words have been the prologue to more eye injuries than we can count. Keep a few pairs of safety glasses around so they’re within easy arm’s reach.

#10: Don’t Smoke. There’s a checklist of reasons why you shouldn’t smoke, and now, you can add eye health to them. Research shows that smoking does increase the likelihood of eye injuries and disease due to its damage on blood vessels.

#11: Sit Correctly. We all know that working at a computer all day can cause eye strain, but there are steps you can take to minimize it. In addition to eye care tip #2, your computer screen should be positioned just below your line of vision. Artificial “office” lighting can cause glare on your pc, so consider a desk lamp to create a softer lighting environment.

#12: Get A Checkup. Just because you have good vision doesn’t mean you can skip out on your yearly eye exam. Your eye doctor can spot the onset of eye irritations, infections, and disease long before you can in many cases.

We’re batting our eyelashes over National Eye Care Month this January, and we hope you’ll keep eye care in your sights every day of 2012. There are tons of eye care tips out there, and we’d love to hear how you protect your peepers – leave us a comment or visit us on Facebook and Twitter to share your own tips!