The convenience brought by progressive multifocal glasses to the middle-aged and elderly has been deeply integrated into modern life, and even my glasses store in a small mainland town can successfully fit several pairs of progressive glasses every month, not to mention the previous fitting work in the metropolis of Shenzhen, which is almost every day There are successful fittings, sometimes even as many as five or six pairs a day, and various types of brands have contact.
Processing and molding of unwashed progressive glasses.
Although progressive glasses provide a lot of convenience for middle-aged and elderly people to wear glasses, they have high experience and technical requirements for fitters, and the fitting procedures are cumbersome.
Progressive multifocal glasses are uncomfortable to wear, resulting in some complaints, some fitting personnel like to only attribute to the problem of optometry prescription or lens design, as optometry glasses for nearly 20 years, there are thousands of pairs of progressive glasses fitting successful experience, the author summed up the multifocal glasses fitting into the best rules, do the following six things, is the guarantee of success.
1) Give an accurate and appropriate prescription for glasses.
Accurate prescription is to ensure that the customer's needs can be met by seeing far and near, and at the same time, the near plus add value is the lowest state, so the myopia eye will generally be under-corrected, but the premise is to ensure the customer's distant eye needs, and the farsighted eye needs to be corrected as much as possible, slightly under-corrected myopia or foot correction of farsightedness, you can maintain the minimum amount of additional add under the condition that the total luminosity of the near eye remains unchanged, and the add value becomes smaller, and the astigmatism distortion area around the gradual periphery will also decrease, so an accurate and appropriate progressive prescription occupies an important part in the fitting of progressive glasses。 Of course, if the prescription of the optician has severe anisometropia or other problems that are not suitable for progressive lenses, this step can also give timely advice.
2) Choose the right frame for your glasses.
A pair of well-matched frames also plays a big role in the comfort of progressive glasses. If the frame is too large or too small, or the height of the frame is too high or too narrow, the wearing comfort of progressive lenses will be affected, for example, the large frame will increase the peripheral astigmatism, and the narrow frame will reduce the field of view near and far.
3) Accurately collect the high interpupillary distance data of the eyelid wearing glasses.
It is very important to collect the pupil height and interpupillary distance of the spectacle on the selected frame, which has a large deviation and directly affects the clarity of the spectacle wearer's vision far or near. Before putting on the frame and dotting the pupil, we must do a good job of preliminary adjustment, the distance between the eyes of the glass, the angle of opening, and the angle of forward tilt must be adjusted, and the tightness is moderate, and then accurately point out the position of the pupil height when the wearer is accustomed to looking at the distance, and the result is not only the pupil height, but also the interpupillary distance of the single eye, and the monocular pupil height monocular interpupillary distance plays a very important role in the customized processing of progressive glasses, and it is also used to evaluate and select the progressive lens of the corresponding channel.
4) Recommend the appropriate progressive lens brand and channel length.
Recommending a lens with a good reputation is also a factor in the success of fitting, and it is very important to customize the appropriate progressive channel according to the actual data of the frame and the pupil height and interpupillary distance. At present, the mainstream progressive lens is a free-form progressive lens, a well-known brand lens, with advanced design and manufacturing technology, which can reduce the peripheral astigmatism distortion of progressive lenses, increase the field of vision, and improve the clear comfort of wearing glasses。
5) Precise edging of progressive lenses.
The precise edging of progressive lenses is also very important, if we do the above four steps perfectly, but there is a deviation in the positioning of the edging processing, the effect of wearing glasses will also be greatly reduced, such as the pupil height is high or low, which will affect the visual effect of the wearer to see far and near.
6) The fitting professional personally guides the use of the try-on, tailors the subtle adjustment of the glasses, communicates and explains in a timely manner, and dissolves the doubts in the hearts of the wearers.
In addition, due to the edging of the glasses, some angles will change slightly, so it is necessary for the hearing care professional to make adjustments for the customer in time to achieve the best comfort of wearing glasses.
I think the last step is quite important, some optical stores do not come out to deliver the glasses in person, and directly let other personnel deliver the instructions, which may lead to many problems that cannot be communicated and solved in time. A successful pair of progressive glasses is largely due to the communication before fitting and the explanation at the time of delivery. (ENDS).
Author's Affiliation: Guang'an Elf Glasses Store.