Individuals can choose to wear these lenses if they require vision Lutazene Review orrections, or if they simply want to change their appearance altogether. Generally, the amount of people that require contact lenses for vision imperfections are greater than the people that do not. But, if you do not require green contact lenses to fix vision ailments, you can still choose to wear these lenses in order to change your present appearance. If a colored lens is worn, and you decide that you do not want to wear it any longer, you can simply remove it from your eyes and your natural eye color is restored.
Trifocal and bifocal sunglasses are both kinds of multi-focal sunglasses, which is a combination of both sunglasses and multi-focal eyeglasses. However, trifocal sunglasses are an extension of bifocal ones, since bifocal sunglasses have two focus points while trifocals have three, which are the three regions for far, intermediate and near vision, respectively. The region in the bottom of the lens is basically for the near vision like reading, and the region in the top is usually for the far vision like scenery viewing. The added part in the middle is for the vision in the middle like computer watching, usually arm's length.
Bifocal sunglasses make a great contribution to the old people for enabling them to have a clear vision of the nature in the sunshine both far and near. The problem is as they grow even older they are unable to see the intermediate objects clearly, either. So comes to the invention of trifocal sunglasses, which are more suitable for those people with advanced presbyopia problems. The additional segment for the intermediate vision is usually located above the reading zone, providing a gentle transition of vision change.