Suffering from the presbyopia phenomenon? it's natural
As the years go by, our ability to focus on a closer look diminishes.
This phenomenon is called presbyopia or in simpler words - "vision loss".
This difficulty is due to a natural physiological process, in which the eyes lose their ability to focus when looking closely (to the computer and reading), and blurred vision is created.
The first signs are when it is necessary to move the hand away from the gaze to read or increase the writing, feel tiredness in the eyes, burning, blurring of headaches and discomfort.
Multifocal - the optimal optical solution
A multifocal lens is a multifocal lens (with multiple focal lengths), which provides an ideal optical solution for all vision ranges in a single lens, thus saving the need for several additional pairs of glasses for different vision distances.
The lens simulates the natural vision of a person who does not need glasses.
Three in one lens
The polishing of multifocal lenses is not uniform at every point on the surface of the lens, in order to allow focusing that is appropriate for the different viewing ranges:
• The part located in front of the eye in the lens, adapted to distance vision.
• In the center of the lens there is an area adapted for medium distance vision, for example: looking at a computer.
• The bottom of the lens is for reading.
The transition area from the distance to the reading is called the "canal".
Multifocal lenses come in designs that vary from manufacturer to manufacturer, with each lens being able to design the channel according to the customer's needs and the choice of frame.
Easy training for a multifocal
Since the lens is multi-focal, it takes time for the eyes to get used to directing the gaze to the right area in the lens, depending on the distance of the object and easy adjustment and training time is required.
The eye should be accustomed to a slight shift of gaze in different directions.
For example, if you want to read, you have to look down, while watching the computer screen, you have to place the screen about 20 degrees below a straight look.
Unlike a standard single-focal lens lens, distortions are created on the sides of the lens due to its unique structure, but as the lens progresses and is more expensive, a more accurate adjustment can be made to customer needs, with minimal side distortions and convenient transitions between distances.
Forget about grandma's stories about multifocals
There are endless stories, legends and myths about multifocal lenses, the various manufacturing companies, different types of lenses and the difficulties of adaptation, since in the past multifocal lenses were manufactured in low quality and high cost, and many were unable to adapt to them.
But since then we have progressed.
The next generation of the multifocal is already here
Today there is no reason to worry about multifocal lenses.
Technologies have advanced and lenses provide a solution to the vision needs that vary from person to person.
If you have tried multifocal lenses before and have not adapted, it is time to try again.
Most cases of discomfort are due to a mismatch in the prescription, choosing the wrong lens or incorrect mounting habits.
Which cases are not "suitable" for multifocal?
1. Prescribers with different prisms far and near.
For example: People suffering from strabismus vary.
2. Limitation in neck movements (example: after an accident) - Although focusing mainly requires eye movement, the multifocal lens sometimes requires neck movement in lateral vision.
Cases of drooping eyelids make it difficult to use the multifocal, as there is a tendency to lift the head to compensate for pupil coverage by the eyelid.
Advantages and disadvantages of multifocal lenses:
Advantages:
• With one pair of glasses, you can have all vision ranges and save two or three pairs for different distances.
• Customization for each and every customer.
• Lower wear and tear - the glasses are constantly on the face and are not placed and removed frequently.
• Adjustment period of 3 months - at Super-Pharm, for example, you can get your money back within a period of 3 months from the date of purchase.
Disadvantages:
• More expensive price than single-focus glasses (for distance or reading).
• Narrow field of view on the sides of a single-focus lens.
• Sometimes adjustment time is required.
Tips for successfully fitting multifocal lenses:
• The earlier you start, the greater the chances of a quick and easy adjustment.
• Share your hobbies and personal needs with the optometrist, such as: multiple driving, reading a book, working in front of a computer or watching TV.
• You should use a ruler at home and measure the reading distance and location of the computer screen, before arriving for the test.
• If you have multifocal glasses, bring them for examination, so that the optometrist can take into account the prescription and the type of lenses available.
• Choose quality lenses that can be precisely adjusted to your needs.
• In consultation with the optometrist, choose a frame that is suitable for multifocal lenses.
Did you get the glasses with the new lenses?
• It's time to coordinate expectations: It's important to listen to the instructions of the optometrist who will guide and guide you how to properly use the new multifocal glasses, and explain what effects you may experience in initial use.
Practice: Sit in front of a computer or book and practice moving your eyes up and down between the centers, without moving your chin.
The training should be performed for three distances:
1. Looking slightly below the horizon to the computer screen.
2. Raising the gaze beyond the computer monitor - for remote vision practice.
3. Lowering the gaze to the keyboard - for close-up vision practice.
4. It is recommended to practice looking to the sides in movements of the head ("no" movement) and without moving the eyes to the sides (entering the areas of distortion).
Persistence: It is recommended to persevere in assembling the multifocal and not to "escape" to the old pair of glasses, even if you encounter difficulties.
• Graduality: If after a few hours of assembly you experience adjustment difficulties, do not force yourself to proceed immediately to full use.
First practice the lenses indoors.
Once you feel comfortable walking and functioning with the multifocal, you can switch to outdoor use.
Leave the driving to the end of the adjustment process.
• Patience: Adaptation difficulties are natural and transient.
If after about a month you still experience adjustment difficulties - return to the optometrist for another examination.
• Even if you have tried multifocal lenses without success in the past, it does not mean that you are not suitable for multifocal - most cases of non-compatibility with multifocal are solvable, and today you can find lenses that will suit almost everyone.
So what is the secret to the success of multifocal lenses?
• An experienced optometrist and attentive to the customer's needs, who will perform accurate testing and measurements
• Lens quality without compromise at the geometric level with a minimum of distortions
• Adherence to quality coatings.
• Adjusting a frame to suit your needs
• Accuracy in cutting the lens into a frame
• Getting an accurate explanation of how to use
• And most importantly: your motivation and perseverance!