Prescription eyeglass switches are possible in some cases. Some people will wear someone else’s eyeglasses in an emergent case. And there are still many people who need to switch eyeglasses on a regular basis. There are several reasons for such kind of switches although it is quite inconvenient. For instance, people in their 40s need to get both reading glasses and glasses for nearsightedness. In another case, people with vision problems must wear safety lenses in a dangerous workplace. In an outdoor environment, it may be needed to change to a pair of prescription sunglasses. All these conditions make glass switches necessary.
One problem underlying eyeglass switches is that these spectacles for different purposes have their specific prescriptions. This fact has long aroused a concern that it will ruin the eyes. For example, most parents will tell their kids not to exchange eyeglasses with their friends or classmates. They think a wrong prescription would damage the eyes. To certain extent, this is just an “old wives” tale.
Switching between prescription glasses from day to day will not cause permanent damage to the eyes, according to some researches. This conclusion is quite understandable if people have a clear understanding of how vision problems are caused. Irregular eye shapes are the exact causes of vision problems. Only prolonged improper use of the eyes can change the eye shape. Some people damage their eye shape because they spend prolonged time in reading or watching TV for several years. One or two actions will not change the eye shape.
It is true that some individuals experience headaches or eyestrain when they switch between two pairs of prescription eyeglasses. This is because the eyes are forced to adjust to a new prescription. However, the eye shape will remain intact. The only problem is that those individuals would be uncomfortable during the minutes following such a switch. Actually, there are some other alternatives to eyeglass switches on a regular basis. For instance, bifocal eyeglasses can replace two separate pairs of prescription glasses.
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