The relief that comes with hydrating your eyes from dryness or irritation is indescribable - ask anyone with an eye condition! Those wearing contact lenses often experience dry or red eyes that could lead to blurred vision and increasing discomfort, if left untreated. Equally, glasses wearers spending long days in front of a computer screen don't have it any easier. As the main culprits behind irritation are environmental factors (heavily air-conditioned, smoke-filled rooms or even makeup), having a bottle of eye drops in your bag is a great way to cover all bases - but what product suits your needs best?