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How to Evaluate the Quality of Contact Lenses
When people talk about “good” contact lenses, comfort is often the first thing that comes to mind. But in reality, evaluating the quality of contact lenses is far more complex. Comfort is important—but safety and visual effectiveness come first. Below are the key dimensions that define a truly high-quality contact lens. 1. Effectiveness: Achieving the Intended Results A good contact lens should deliver the vision correction it promises.This includes: Clear and stable visual correction for...
1, fair skin people are more suitable for wearing purple color contact lenses, purple color pieces such as hydrochrome bright purple, honey purple, jelly purple, Barbie love dream purple and other purple, are a good choice.2, yellow skin or white red people are more suitable for wearing green contact lenses, so it looks lively and mellow. Green color pieces such as aqua emerald green, honey green, jelly green, Barbie love dream green and other green, are very suitable fashion collocation.3,...
one Hard mirror: PMMA polymethyl methacrylate was invented in 1934; 1947 PMMA was used to produce the first all-plastic contact lenses. Advantages: better corrected vision, long lens life; Disadvantages: brittleness, poor air permeability, strong foreign body sensation.2. Soft mirror: PHEMA was discovered in 1960. The first pair of soft contact lenses (Otto Wichterle, father of the soft lens); Approved by the FDA in 1971. Advantages: soft, oxygen permeable, comfortable, no foreign body...
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.