Eye Glasses and Contact Lenses
Lenses for correcting or improving vision:
There are two types of lenses prescribed for correcting or improving vision. These include:
How to read an eyeglass prescription:
The lens power of eyeglasses is measured in diopters. This measurement reflects the amount of power necessary to focus images directly on to the retina. When looking at an eyeglass prescription, you will see the following abbreviations:
In addition, the eyeglass prescription may also contain the following measurements:
Bifocal is additional power in the lens for close-up work, listed on the prescription as "add."
What are the different types of eyeglass lenses?
The type of lenses used in eyeglasses depends on the type of vision problem, and may include:
Eyeglasses for children:
Pick a frame that is impact resistant and request shatterproof (or polycarbonate) lenses. Other choices to consider are:
Facts about contact lenses:
Almost 30 million Americans wear contact lenses, half of whom wear daily wear soft lenses. In general, contact lenses can be divided into two main categories: rigid, gas permeable lenses and soft, water permeable lenses. Special silicone lenses have applications in infants.
Reading a contact lens prescription:
The prescription for contact lenses includes more information than what is available on the prescription for eyeglasses. Special measurements are taken of the curvature of the eye. In addition, your child's physician must determine if your child is an appropriate candidate for contacts.
The contact lens prescription usually includes the following information:
Eye care specialists are required by federal law to give you a copy of your contact lens specifications.
Click here to view the
It is important to remember the health information found on this website is for reference only not intended to replace the advice and guidance of your healthcare provider. Always seek the advice of your physician with any questions you may have regarding a medical condition. If you think you may have a medical emergency, call your physician or 911 immediately.
© Children's Hospital of Orange County