By using this site, you agree to the Privacy Policy and Terms of Use.
Accept
Health Works CollectiveHealth Works Collective
  • Health
    • Mental Health
    Health
    Healthcare organizations are operating on slimmer profit margins than ever. One report in August showed that they are even lower than the beginning of the…
    Show More
    Top News
    How Not to Become a Victim of Medical Scams
    How Not to Become a Victim of Medical Scams
    December 22, 2021
    11 Ways You Can Care for Your Elder Family Members Health
    11 Ways You Can Care for Your Elder Family Members Health
    April 6, 2022
    How Can Brain Injury Lead To Dangerous Long-Term Effects?
    How Can Brain Injury Lead To Dangerous Long-Term Effects?
    August 30, 2022
    Latest News
    3 Ways To Deal With Health Issues In Cities With High Pollution
    March 22, 2023
    What Tools Should Your Caregiver Have?
    March 22, 2023
    How to Combat Home Sickness After Moving Abroad
    March 19, 2023
    4 Ways to Recover from a Broken Hip
    March 14, 2023
  • Policy and Law
    • Global Healthcare
    • Medical Ethics
    Policy and Law
    Get the latest updates about Insurance policies and Laws in the Healthcare industry for different geographical locations.
    Show More
    Top News
    Preventing Childhood Obesity
    July 1, 2011
    Health Myths From Aaron Carroll
    August 2, 2011
    Overtreatment Alert! Antibiotics Fuel Medical Overutilization
    September 5, 2011
    Latest News
    What Are Bioidentical Hormones Made With?
    March 23, 2023
    Cover Medical Costs of Child Dog Bites with Legal Specialists
    March 23, 2023
    3 Ways to Improve the U.S. Healthcare System By 2030
    March 14, 2023
    6 Steps To Ensure Speed And Efficiency Of Clinical Studies
    March 14, 2023
  • Medical Innovations
  • News
  • Wellness
  • Tech
Search
© 2023 HealthWorks Collective. All Rights Reserved.
Reading: What You Need to Know About Contact Lens Prescriptions
Share
Sign In
Notification Show More
Latest News
The Best Natural Sleep Remedies & Aids
The Best Natural Sleep Remedies & Aids
Wellness
Bioidentical Hormones
What Are Bioidentical Hormones Made With?
Medical Education
chemical peels for skin disorders
Chemical Peels Can Do Wonders for Treating Skin Disorders
Skin
health benefits of lip enhancements
Cleveland Clinic Cites Health Benefits of Lip Enhancements
lifestyle
child dog bite lawyer
Cover Medical Costs of Child Dog Bites with Legal Specialists
News
Aa
Health Works CollectiveHealth Works Collective
Aa
Search
Have an existing account? Sign In
Follow US
  • About
  • Contact
  • Privacy
© 2023 HealthWorks Collective. All Rights Reserved.
Health Works Collective > Specialties > Eye Care > What You Need to Know About Contact Lens Prescriptions
Eye CareSpecialties

What You Need to Know About Contact Lens Prescriptions

Abby Norman
Last updated: 2022/09/04 at 8:12 PM
Abby Norman
Share
9 Min Read
what is in your contact lens prescription
Shutterstock Photo License - Olena Yakobchuk
SHARE

About 45 million people in the United States have contact lenses. Many benefit from them, but they have to have the right prescription.

Contents
The Base CurveThe Lens DiameterThe Material of the LensTypes of Contact LensesSoft Contact LensesRigid Gas Permeable (RGP)Hybrid Contact LensesCan You Convert a Glasses Prescription To Contact Lenses?

There are a lot of things to consider when buying contact lenses. One important factor is the prescription that you receive.

While your contact lens and glasses prescription may look similar, they are not interchangeable. Your contact lens prescription is based on the characteristics of your eyes, while your glasses prescription is based on the distance between your eyes and the lenses. A contact lens prescription includes the power of your lenses and the curvature of your cornea. A glasses prescription includes only the power of your lenses.

Contact lenses prescriptions include a variety of different specifications that are not part of the standard glasses prescription, and these can include the following.

More Read

using invisalign to fix crooked teeth

What Is the Average Cost of Invisalign Treatments?

Diagnosing and Finding the Best Treatments for Acne Scars
Advances in Stem Cell Research Can Help Regrow Teeth Naturally
The Proven Links Between Air Pollution and Cancer
Distressing Birth Injuries and How They Can Be Prevented

The Base Curve

The base curve is the curve of the back surface of a contact lens. It is measured in millimeters and has a range of values from 8.4 mm to 10.0 mm. The base curve determines the amount of curvature on the front surface of the lens, which in turn affects how the lens fits onto your eye.

A steeper base curve value produces a more curved front surface, and a flatter base curve value produces a less curved front surface. The flatter the base curve, the more “ball-like” your eye appears. The standard or default base curve for most lenses is 8.6 mm. However, depending on the actual shape of your eye, you may require a different base curve to get the right lens fitting. Your doctor can determine your specific base curve needs during a comprehensive eye exam.

The Lens Diameter

The lens diameter, also known as the optic zone diameter, is the measurement of the total curvature of your contact lens. It determines how wide the central portion of your lens will be and directly impacts how well the lens will fit in your eye. A smaller lens diameter means less overall bearing surface on the eye and can cause uncomfortable fitting issues such as poor centration or frequent dislodging. On the other hand, a larger diameter can cause bigger lenses that may be visible when you blink or at rest. Generally, most people have a safe and comfortable middle ground between 13.5 to 14.5 mm. However, this may vary depending on your eye’s specific shape and size.

In addition to base curve and diameter, a contact lens prescription may include an axis and cylinder for toric lenses or an add for multifocal lenses. The axis indicates the degree of astigmatism, while the cylinder is used to correct it. This add is used to correct presbyopia, the age-related loss of near vision. These are the only two measurements found on both contact lenses and glasses prescriptions.

Toric contact lenses are designed to correct for astigmatism and presbyopia, the age-related loss of near vision. The cylinder number mentioned on a contact lens prescription always denotes the correction for astigmatism and is given as a minus number. On a glasses prescription, the cylinder value can be plus or minus but will be blank if there is no astigmatism. The same goes for the axis values. If in case you have a high degree of astigmatism, you may need to wear gas-permeable contact lenses or custom contact lenses that are made to fit your specific corneal shape.

The Material of the Lens

The material of the lenses is important for a few reasons. The weight of the lens is a big factor, as heavier lenses can cause headaches and neck pain. Glass lenses are much heavier than plastic lenses, which is why most glasses nowadays are made of plastic. Contact lenses are usually made of hydrogels, a type of polymer that can absorb water. Hydrogels are used because they are very soft and comfortable to wear. They also allow oxygen to pass through, which is important for the health of your eyes.

Types of Contact Lenses

There are a lot of benefits of wearing contact lenses. For example, they can improve your running routine. However, you have to invest in the right type. The different types of contact lenses are listed below.

Soft Contact Lenses

They are made from a soft, pliable material that conforms to your eye’s shape and is available in a wide range of prescription strengths. Soft lenses are also available in a variety of colors and styles, including options that can enhance or change your natural eye color.

Rigid Gas Permeable (RGP)

Rigid gas permeable (RGP) contact lenses are made of a brittle, oxygen permeable material that resists deposits. They produce clear, sharp vision and provide excellent comfort for patients who adapt to them. An RGP lens is usually larger in diameter than a soft lens, so it covers more of the cornea. This can provide better protection from foreign bodies and irritants such as pollen and dust. RGPs must be custom fit to each patient’s eye and require some adaptation time before they are comfortable. RGPs are also generally more durable than soft lenses, so they can be a good choice for active patients or those with allergies or other conditions that cause them to rub their eyes frequently.

Hybrid Contact Lenses

Hybrid contact lenses are a type of lenses that offer a combination of the best features of both hard and soft lenses. Hybrid contact lenses offer the benefits of both types of lenses, making them a popular choice for many people. They’re made of RGP material in the center, which provides clear vision, and soft material around the edges, which is comfortable to wear. They’re easier to adjust to than hard lenses and may be a good option for people who have had difficulty wearing other types of lenses.  Here https://www.contactlenses.co.uk, you can find all types of contact lenses. 

Can You Convert a Glasses Prescription To Contact Lenses?

If you wear glasses and are considering contact lenses, you may wonder if you can use the same prescription. The answer depends on a few factors. It is essential to note that the eyeglass prescription reflects the amount of correction needed for distance vision.

In contrast, the contact lens prescription reflects the amount of correction needed for up-close vision. As a result, it is, therefore, necessary to have a stronger prescription for contact lenses than for glasses. Additionally, contact lenses sit directly on the eye, requiring a different curvature than glasses to fit properly. 

For these reasons, it is usually impossible to simply convert a glasses prescription to a contact lens prescription. As a result, the two types of prescriptions are not directly comparable. If you need a contact lens prescription, it is always best to visit an eye doctor so that they can properly measure your eyes and prescribe the correct lenses.

TAGGED: contact lens, prescription

Sign Up For Daily Newsletter

Be keep up! Get the latest breaking news delivered straight to your inbox.
By signing up, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy. You may unsubscribe at any time.
Abby Norman August 26, 2022
Share this Article
Facebook Twitter Copy Link Print
Share
By Abby Norman
My name is Abby Norman and I am a healthcare blogger. With over 10 years of experience in the medical field, I have developed a passion for helping others understand the complexities of healthcare.
Previous Article superfoods to help with prostate health 10 Healthy Foods That Can Help Protect Your Prostate
Next Article Effects of Alcohol on Skin

Stay Connected

1.5k Followers Like
4.5k Followers Follow
2.8k Followers Pin
136k Subscribers Subscribe

Latest News

The Best Natural Sleep Remedies & Aids
The Best Natural Sleep Remedies & Aids
Wellness March 23, 2023
Bioidentical Hormones
What Are Bioidentical Hormones Made With?
Medical Education March 23, 2023
chemical peels for skin disorders
Chemical Peels Can Do Wonders for Treating Skin Disorders
Skin March 23, 2023
health benefits of lip enhancements
Cleveland Clinic Cites Health Benefits of Lip Enhancements
lifestyle March 23, 2023

You Might also Like

chemical peels for skin disorders
Skin

Chemical Peels Can Do Wonders for Treating Skin Disorders

March 23, 2023
dental care modern
Dental health

Dental Mission Trips Help Provide Dental Care to Impoverished Nations

March 22, 2023
dental industry
Dental health

New and Emerging Trends in the Dental Industry

March 14, 2023
HVAC filter
Allergy

HVAC Air Filters Are Crucial for Reducing Allergy Symptoms

March 2, 2023
//

We influence million of users and is the most authentic source of information on healthcare business and technology news.

Quick Links

  • About
  • Contact
  • Privacy
Subscribe

Subscribe to our newsletter to get our newest articles instantly!

Follow US

© 2008-2023 HealthWorks Collective. All Rights Reserved.

Removed from reading list

Undo
Welcome Back!

Sign in to your account

Lost your password?