How to Adjust Binoculars for Right and Left Eyes? Guide to Learn

When adjusting binoculars for use, what is the difference between right and left eyes?

Whether you own a pair of binoculars or simply want to check to make sure they are adjusted correctly, you’ll need to know the answer.

It's no secret that the majority of people see better through their left eye than their right. The reason for this is because the left eye is situated just below and ahead of the nose, and this arrangement makes it easier to take in a broader field of vision. However, for binoculars users — who typically operate with two telescopic objects — we've created a simple guide to adjusting your lenses so they're perfect for both eyes.

Now, if you happen to have an OTC vision test chart handy, you can quickly check that they are set correctly. You can simply place the chart at the correct distance from the binoculars using a tape measure. Then, when looking through the binoculars you will see a blurry version of the letters. If they are not in focus for each eye, you need to adjust them accordingly.

This is where it is important to know whether your binoculars are for right or left eyes.

Watch below how to adjust the binoculars until getting a single circular image:

Now, if you hold the near end with your right hand and lower it until it is in your right eye’s line of vision and then place your left eye to the right side of the lens. You will need to adjust this until both eyes are at the same distance from the binoculars. You should be able to see both sides clearly now, so check each side carefully. If the right eye is not in focus, you will need to move the left end of the strap.

Ideally, you should repeat these steps several times to make sure you have got it right. The reason for this is that the first time you might be tempted to move the wrong strap in order to get them right for each eye. This can be very confusing when you go to use them again since it is easy to get mixed up!

I'm repeating it again about how to adjust binoculars for right and left eyes

First of all, if your binoculars don't have a device to adjust the lenses for each eye — and most don't — you'll need to invest in a pair that does. This will cost you anywhere from $100-$500, but it is worth it as it will ensure both eyes are seeing as clearly as possible.

To use this feature, simply place your binoculars against a wall and line up the right lens with your right eye, and then do the same with the left lens and your left eye. Now, look through the binoculars at the wall with your hands on both sides of the eyepiece lens. This will allow you to ensure that both lenses are adjusted properly.

The next step is to adjust each lens differently for each eye. To do this, simply raise or lower one of them by turning the diopter adjuster located on the top of your binoculars' eyepiece. Remember, the higher the diopter adjuster is set, the more it will allow light to penetrate through your lenses and into your eyes. In comparison with the lower setting, the higher setting makes it easier for people to see clearly. Watch below how to use binoculars, also you can learn completely from my previously written article.

You'll find that adjusting both lenses — one at a time — will help your overall vision and make it easier to read small print or for you to see objects more clearly.

However, if you're looking for binoculars that are specifically designed for right-handed people, consider models with the right eye lens located on the left hand side of your binoculars' eyepiece. This way, when using your binoculars, your eyes will naturally be focused on the object you're viewing. But remember, the left-eye lens should be set higher than the right-eye lens. If you wondering about how to focus binoculars then you can check out my article.

Good luck!