In fact, this is very far from the truth and a healthy balanced diet can do wonders for your eyesight.

Nutrients which are eye-friendly can be found in many fruit and vegetables.  Fatty acids, derived from fish nuts and some oils, can help protect your eyesight.  Vitamins B and E will help protect against cataracts while omega-3 fish oil can help maintain healthy blood vessels inside the eye.

In addition, research has shown that eating just one portion of fish a week can reduce your risk of developing age-related macular degeneration (AMD) by up to 40%.

It pays to keep an eye on your weight too.  A body mass index (BMI) of 30+ can double your risk of suffering AMD and is believed to significantly increase your chances of developing cataracts.

There are numerous dietary supplements on the market but little evidence that they benefit eye health.  They may be helpful for people already experiencing AMD however.

Improving your fitness can prove to be beneficial.  Aerobic exercise increases oxygen supply to the optic nerve and can reduce pressure built up around the eye.  Reducing this pressure can help with conditions such as glaucoma and ocular hypertension.

So the conclusion is that a healthy balanced diet that is good for your body is also good for your eyes.  To really boost your eye health enjoy a diet rich in spinach, kale, tuna and eggs.