If you are lucky enough to have a dog whose head is covered with long hair, especially above and around his eyes, it needs to be kept well-groomed. If you let this hair get too long, it can scratch or irritate his eyes and lead to unnecessary vet bills. And if this isn't enough, if you let the hair over his eyes get too long, he won't be able to see where he is going! In certain breeds, the constant irritation of long hair can lead to excessive tearing that stains his fur.
If your dog is like most, the last thing he wants is for you to be messing around his eyes with shears and a comb. Any time you get near his eyes, he is likely to flinch. It's a natural reaction. It is very important that you take things slow in the beginning and give your dog time to get used to the tools. This will make keeping his hair trimmed back on a regular basis much easier.
Keeping the hair trimmed around your dog's eye is vital to his vision and overall eye health. You should do this at least once a month. But, depending on your dog's breed the time frame may vary. Just remember, your pup needs you to do this, so take your time and be patient. In time, he will get used to you doing this on a regular basis.