Presbyopia is another type of eye condition that can be corrected with prescription eyeglasses. This disorder is where eye's lens cannot focus. This usually happens to everyone in his or her late forties. The symptoms for Presbyopia are that a person finds himself or herself holding reading material farther away to enable reading. Also, eye fatigue is a common symptom.

The importance of getting regular eye exams to check for these eye conditions can't be overstated. Left untreated, all of these conditions will only worsen.

In a routine eye exam optometrist will also do a glaucoma test. Glaucoma is build up of fluid on eye that results in pressure on retina. It is irreversible if left untreated, and can cause total loss of sight. This is one eye disorder that cannot be treated by wearing prescription eyeglasses. However, this condition rarely has symptoms, therefore stressing importance of routine eye exams.

Some prescription eyeglasses are tinted with a wide variety of colors and shades. The purpose of tint is to reduce glare from certain situations: such as bright lights, computers television sets, etc. Another reason for tinting of lenses are to offer comfort to eyes. Also, people order tints on their eyeglasses for fashion.

Glass and most plastic lenses are coated with a UV protection coating. Ultra violet rays can cause severe damage to eyes. It is very important to protect your eyes while out in sun.

Another coating that is added to a pair of prescription eyeglasses is scratch-resistant coating. Sometimes this coating is applied at manufacturer and other times it can be added right there at eye doctors office. It must be said, however, that even while this coating can aid in durability of lens, it does not make lens scratch proof.