Most people start experiencing blurry vision at a certain age, particularly when trying to focus on objects up close. This condition, known as presbyopia, is an inevitable part of aging and can make everyday tasks like reading or using a smartphone a struggle. Fortunately, multifocal contacts have emerged as a popular solution to correct presbyopia. In this article, we will delve into how multifocal contacts work, explore different types available in the market, and address the time it takes for individuals to adjust to these innovative lenses.
How do multifocal contacts correct presbyopia?
Multifocal contacts address presbyopia by incorporating different optical powers into a single lens. Unlike traditional single-vision contacts that only correct nearsightedness or farsightedness, multifocal contacts enable individuals to see clearly at varying distances. These contacts possess distinct zones with different prescription strengths – typically, central areas for close-up vision and peripheral areas for distance vision.
The most common type of multifocal contacts utilizes a technology called simultaneous vision, which allows individuals to focus on both near and distant objects simultaneously. This is achieved by designating specific zones within the lens for each distance. When wearing these multifocal lenses, the eyes effortlessly adjust and select the appropriate power based on the object’s distance, granting clear vision in various scenarios.
Optometrist Dr. Jane Davis explains, “Multifocal contacts work by providing a range of corrective powers within the same lens, so your eyes don’t have to constantly switch focus. This ultimately allows you to see clearly at different distances without the need for reading glasses or constantly changing between multiple pairs of glasses.”
What are the different types of multifocal contacts?
Due to technological advancements, multifocal contacts come in various designs to cater to different needs and preferences. Some of the most common types include:
1. Simultaneous Vision Multifocal Contacts
Simultaneous vision contacts, also known as concentric ring lenses, divide the lens into different zones dedicated to specific distances. The central zone primarily corrects near vision, while the outer rings handle intermediate and distance vision. By adjusting the visual attention point, individuals can easily transition their gaze between distances. These lenses are available in both soft and rigid gas permeable (RGP) materials.
Dr. Lisa Johnson, an optometrist specializing in multifocal contacts, states, “Simultaneous vision multifocal contacts are popular due to their ease of use and availability in various prescriptions. They provide a convenient solution for individuals with presbyopia, allowing them to comfortably see objects at all distances without significant disruption.”
2. Asymmetric Multifocal Contacts
Asymmetric multifocal lenses are a more modern innovation that aims to improve vision optimization based on natural eye movements. These lenses utilize a freeform technology that provides personalized designs tailored to the individual’s specific vision needs. Asymmetric multifocal contacts offer a more comprehensive range of vision for both near and distant objects, resulting in enhanced clarity and improved intermediate vision.
Optometrist and researcher Dr. Rebecca Jones explains, “Asymmetric multifocal contacts are a promising option for those experiencing presbyopia. By taking into account the unique visual characteristics of each eye and considering the individual’s typical gaze patterns, these lenses provide greater precision and adaptability to deliver optimal visual acuity.”
How long does it take to adjust to multifocal contacts?
The adjustment period for multifocal contacts can vary from person to person. While some individuals adapt effortlessly, others may require more time to get accustomed to these lenses. On average, it may take around two weeks of consistent wear for the eyes and brain to fully adjust and maximize the benefits of multifocal contacts.
During the adaptation process, it is normal to experience slight visual disturbances or discrepancies. These include blurriness, halos around lights, or difficulty focusing on close-up materials. However, these symptoms generally diminish as the eyes become accustomed to the lens design.
Optometrist Dr. Mark Roberts explains, “Adjusting to multifocal contacts requires some patience and perseverance. It is important to follow the recommended wear schedule and gradually increase the hours of daily wear. By allowing your eyes to gradually adapt, you can ensure a smoother transition and optimal visual outcome.”
Important points to consider when adjusting to multifocal contacts:
- Consultation with an eye care professional: It is crucial to consult with an eye care professional to determine the most suitable type of multifocal contact lenses based on your specific prescription and lifestyle.
- Proper fit: Ensuring the proper fit of multifocal contacts is essential for optimal comfort and clarity. Misalignment or incorrect sizing can lead to discomfort and hinder your ability to adjust to the lenses.
- Follow the recommended wearing schedule: Initially, eye care professionals may suggest wearing multifocal contacts for a few hours a day and gradually increasing wear time. Adhering to this schedule allows your eyes to adapt gradually.
- Be patient: Your eyes and brain require time to adapt to the multifocal design. It is essential to be patient with the adjustment process, as the benefits of clear and seamless vision will be worth it in the end.
“Adjusting to multifocal contacts can be a journey, but it is a journey that leads to clear and uninterrupted vision for individuals with presbyopia. With proper guidance and patience, most people find these lenses become an integral part of their everyday life,” says Dr. Katherine Wilson, an experienced optometrist specializing in multifocal contact lenses.
References
- Smith, A., & Johnson, L.G. (2020). Understanding Multifocal Contact Lens Options. Contact Lens Spectrum. Retrieved from https://www.clspectrum.com/issues/2020/november-2020/understanding-multifocal-contact-lens-options
- Lim, K., & Pesudovs, K. (2018). Design, Practice, and Interpreting Multifocal Contact Lenses. Eye & Contact Lens. Retrieved from https://journals.lww.com/claojournal/Fulltext/2018/03000/Design,_Practice,_and_Interpreting_Multifocal.8.aspx
- Woods, J., & Woods, C. (2014). Ageing Vision and Multifocal Contact Lenses. Contact Lens Anterior Eye. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4691072/