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Home » Eye Care Services » Your Eye Health » Vision Over 40 » Occupational Bifocal and Trifocals

Occupational Bifocal and Trifocals

Occupational bifocals and trifocals are specialized multifocal lenses created for specific jobs, hobbies or tasks. They are designed for people – generally over 40 – who have developed presbyopia, a condition in which the lens of the eye weakens and it becomes difficult to see objects that are close up. They differ from regular multifocal lenses in that the magnified power areas to see close and intermediate objects are typically larger and positioned in a different area on the lens, according to needs of the designated task.

Occupational bifocal and trifocal lenses are intended for specific tasks and not for everyday use. Here are a few examples:

Double-D Lenses

The most popular type of occupational lens is the Double-D lens. The lens is divided into three segments, with the top designed for intermediate vision, the bottom segment for near vision and the rest for distance. This design is ideal for people who need to see close both when looking down (to read something) and when looking overhead. Professionals that frequently use Double-D lenses are auto mechanics (who have to look overhead when under a car), librarians, clerks or office workers, (who have to look at shelves overhead) or electricians (that are often involved in close work on a ceiling). They are called Double-D lenses because the intermediate and near segments of the lens are shaped like the letter “D”.

E-D Trifocal Lenses

As opposed to Double-D lenses which have the majority of the lens for distance vision, E-D lenses focus on intermediate vision with an area for distance on the top and for near vision on the bottom. These are ideal for individuals who are working at about an arm’s-length away the majority of the time, such as on a multiple computer or television screens, but frequently need to look up into the distance or close to read something. The “E” in the name stands for “Executive Style” which represents the division between the top distance vision lens and the bottom intermediate vision lens which goes all the way across the lens. “D” in the name of the lens is due to the fact that the near section in the bottom of the lens is shaped like a “D”.

Office or Computer Glasses

Multifocal lenses designed for office work provides the largest section with an intermediate lens designated for viewing the computer screen and a smaller area for limited distance vision. You can have progressive or trifocal lenses that incorporate near vision as well.

Golf Bifocals

That’s right, there are even specialized lenses made for golfers! Golfers need to see a wide range of distances during their game from their scorecard, to their ball on the tee, to hole far away to line up their drive. In these lenses, the close segment is small and placed on an outer corner of one lens, to allow for brief close vision but not interfere with the distance game. Usually, right handed golfers will have the lens on the right side and vice versa.

Personalized Lenses

Standard multifocals can be redesigned to adapt to specific tasks or hobbies simply by changing the size, shape or location of the different segments. Many adults over 40 would benefit from having multiple pairs of multifocals to give optimal vision for different tasks or hobbies they enjoy. Note that occupational lenses are made specifically for the task they are designed for and should not be worn full-time, especially while driving.

Dear Valued Patient:

We plan to re-open on May 20, 2020 to a limited schedule by appointment only—please set appointment online or call or email first.

We look forward to see you again soon!  We place the highest priority on the health and safety of our patients and our eye care staff.  Please read below:

Please read the following carefully to prepare for your visit to our office. We are implementing many new and more stringent procedures to ensure the health and safety of our patients and eye care personnel based on guidelines from the Alameda County Health Department and the CDC to help prevent the spread of COVID-19. During this time we are requiring the following for every patient and in-office encounter:

+We are starting with a limited schedule of appointments for better social distancing and for the safety of our patients (thank you in advance for your patience and understanding).

+All visits are by appointment only, there are no walk-in visits available

+All patients are required to wear their own personal mask before entering the office

+All patients are required to check in over the phone before their appointment

+Insurance coverage verifications must be taken care of before entering office for appointment

+Patient will wait outside in car until notified by text or email when they can come in for their appointment, upon entering, patient’s temperature will be taken and their hands sanitized with alcohol cleaner

+There will be no waiting area in the office, patient will be seen right away-please be on time

+Family or caregivers will need to wait outside in the car, as we will only allow patient to enter office.  Verbal consent for minors is acceptable. Updates will be given family or caregiver over the phone as needed.

+All glasses, contact lens orders will be by curb side pick up only—please call or email and we can help you set up a time to pick up your eye wear safely, maintaining social distancing

Our doctors and staff will increase our cleaning and sanitizing protocols:

+We have the latest HEPA air filters with UVC light disinfection to destroy bacteria and viruses

+Wearing protective face shields and surgical masks and medical grade disposable gloves

+All exam equipment and every surface is sanitized fully with hospital grade sanitizer after each patient encounter

+We have a new safe system of disinfection for all frames which have been touched or tried

+We screen all patients by phone to assure they have been healthy prior to their appointment

+All staff and doctors have passed additional training in more stringent sanitizing protocol

Thank you for your patience and compliance to these new and required guidelines. Our goal is to take care of your eye care needs while keeping you and your family healthy. We also want to help our community overcome this pandemic.

We will get through this together.

Please let us know if you have any questions or need more immediate assistance. 

You can set up a future appointment online at EyeCareDrLee.com or send an email to EyeCareDrLee@gmail.com or DrLeongOK@gmail.com  or call 510-668-0877

Please stay safe and stay healthy.

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Stay up to date on our COVID-19 pandamic protocols Read Our Blog Post…

Our office continues to monitor the local health announcements on a daily basis. Optometry is an essential service and we will open to new health guidelines to help our patients while keeping everyone healthy. Please read our blog updates for our open date and new safety guidelines. Let us know if you have any questions or immediate eye care needs. Need contact lenses? Let us know, as we can send orders to you with free shipping.
We are responding faster to direct email:

eyecareDrLee@gmail.com

drLeongOK@gmail.com (for ortho-k)

Thank you, stay safe and stay healthy.

COVID-19 guidelines from CDC: https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/prevention-H.pdf