Goggles Correct Selection Criteria

Absolutely Flat Surface and Underwater Power Unchanged

By Dr. Lu Da-Wen

● Director of ophthalmology (Tri Service General Hospital)

● Defense Institute of Medical Sciences, Professor of Medicine

● Pennsylvania Wills Eye Hospital, Visiting Associate Professor

According to data, show that 70 percent of the population myopia 6 bought the wrong goggles, professional eye doctor should appeal to students to pay attention to their own vision swim.

Each year of the June, the swimming classes, swimming camps, swimming and other outdoor activities are popular for the most of students. According to statistics, there is over one million myopia participating swimming activities, did not have right swim goggle selected, due to blurred vision caused by security crisis! The statistics show that: up to 76% of myopia has a wrong choice of swimming goggles, including not wearing goggles myopia, does not comply with its own power of wear goggles.

Tri-Service General Hospital, Department of Ophthalmology, director Lu Da-Wen said that if the use of spherical or curved surface of the lens goggles, will cause the water lens myopia increased from 200 to 300 powers or 500 to 600 powers of high astigmatism, increased safety risks for swimming and for long time swimming and visual instability students, likely to cause "visual fatigue" issue, dizziness, eye fatigue, a blur vision and other symptoms!

How to purchase a right goggle?  Beware a wrong goggle produces high power of astigmatism underwater, causing visual fatigue.

Tri-Service General Hospital, Department of Ophthalmology director, Lu Da-Wen said: “optical principles "of different between water and air, when people enter the water due to the change in refractive medium, can not focus easily, for example the cambered or spherical lens goggles sold in the market, those arc lens in the water will cause 500~600 power of astigmatism.  Some of popular in recent years, the sports glasses in oval sharp styling goggles, might produce nearly the highest power of astigmatism, and spherical lens will increase the power of myopia 200~300 under water. In contrast, the absolute flat surface of the lens can maintain the same visual experience, when it will not cause the lens increase of myopia or astigmatism. "

Choose from a right lens "absolutely flat" surface and underwater power unchanged

Lu Da Wen Director reminded, the myopia goggles should be consistent with the water of optics, surfaces in contact with water is "absolutely flat" mirror before presenting real objects, not refracted light continue straight line regardless of entering by air or water. Recommend people to grasp "goggles selection criteria": absolutely flat mirror surface, same power of goggle and spectacles, a right and match PD for your eyes, designed goggle and gaskets do not press uncomfortable your eyes, concerning hot to protect your eye and health!

When matching goggles, and the land should remain with the same rigor glasses

To make myopia swimming population can also have a clear vision, doctors recommend people to master the correct Lu Da-Wen suggest the goggles selection criteria: absolutely flat mirror surface and underwater, and with the same power of land spectacles same focal length position of the pupil, not the eye pressure.

Sable's "professional goggles glasses center SPC" Taiwan is currently the only population of myopia swimming customized service platform for myopias can be like swimming on land matching glasses, the choice of the different functions of the lens, frame and color according to personal preferences, style, tailor-made for specific individuals myopia goggles.