[Vice Director Yoshida] About the “Accommodative Function Analysis Device”

Recently, many patients have come to our hospital requesting the "Accommodative Function Analysis Device." We have also received many inquiries. I was wondering about this, but it turned out that it was featured on an NHK health program. Unfortunately, I wasn't able to watch the program, but apparently it was about prescription glasses using an accommodative function analysis device.
An accommodative function analyzer is a device that measures the accommodative power of the eye (the autofocus function of a camera). It is mainly used for examinations of people who have or are suspected of having an illness with abnormalities in their accommodation ability, such as asthenopia, accommodative tone, and accommodative spasms.
It's a bit complicated, but how accurately you can focus on a visual target presented between a distance slightly farther than infinity (cloud space) to a practical distance of 33 centimeters (accommodative response amount), focus Quantitatively measures the amount of stress placed on the ciliary muscles for alignment.
When prescribing glasses, we perform multiple tests, including a visual acuity test and a refraction test, which measures the power of the eyes, and then listen to the patient's needs and prescribe a prescription based on the patient's age and intended use. I think the most important thing when fitting glasses is to tell us exactly what the glasses will be used for. Do you want to drive, do you want to look at computers, and do you do pretty detailed hobbies like handicrafts?
When wearing a test lens and trying it out, it is very important to look at the distance appropriate for the intended use. If you spend a lot of time looking up close rather than just far away, be sure to look and confirm the required distance. When you look at close distances using glasses that allow you to see far, it puts a lot of strain on your ciliary muscles. In order to avoid fatigue, it is important to be able to continue looking at the distance you want to see for a long time without putting as much stress on your ciliary muscles as possible.
Just because your glasses are not tested using an accommodative function analyzer when prescribing your glasses does not necessarily mean that your glasses are bad, so there is no need to worry more than necessary.
Yesterday, there was a patient who came to the hospital after watching the program, but when I researched it before writing this column, it seems that a month and a half had passed since the program aired. Recently people have been saying that people are moving away from television, but I have once again realized the influence of television.