Skip to main content
asian-asian-female-teen-outside
contact_on_finger
Home » Eye Care Services in Garden Grove, CA » 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 Patients and the surrounding community,

We are currently seeing patients by appointment only and on a limited basis.

  •  If you need to replace glasses or contact lenses and need an extension on your prescription, please contact us and we will assist you in obtaining some until you can come in for a visit.
  •  If you are running out of medication please contact us and we can transmit a refill electronically to your pharmacy.
  • If you have an issue which cannot wait for an office visit, contact us and we will schedule a FaceTime or Telephone appointment with one of our doctors. Medicare has temporarily relaxed its telehealth rules to allow this type of communication during the pandemic crisis. Other insurers may follow suit and allow for reimbursement of virtual care costs. The consultation must be initiated at your request.
  • If you have an ocular emergency we are, as always, available to help you at any time. Call 714-530-2020 and wait for instructions at the end of the message. Dr. Gaylord or Dr. Inman will try their best to meet you in the office whenever possible.  If not we will direct you to the nearest eye emergency facility.
  • During this period of social distancing and quarantine, we must all do our part by restricting activities outside the home except for getting medical care. Do not go to work, school, or public areas. Avoid using public transportation, ride-sharing, or taxis.
  • Please remember that 80% of COVID-19 cases are mild and resolve within a week. However, if you feel your symptoms are worsening, call ahead before visiting your doctor’s office or emergency department and tell them you have or may have COVID-19. This will help the office protect themselves and other patients.

The CDC has many wonderful resources. Arming yourself and your family with clear information will help you avoid undue stress.https://www.cdc.gov/coron…/2019-ncov/prepare/prevention.htmlhttps://www.cdc.gov/…/…/prepare/managing-stress-anxiety.html

With sincerest wishes for your continued good health, we remain at your service,

Ann Inman, OD
Eric Gaylord. OD
Garden Grove Optometry