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Buying lenses well — practical guides from Hong Kong.
Do You Still Need Protective Eyewear If You Wear Contacts for Sport?
Clear vision and impact protection are different jobs. Compare contacts, sunglasses and sports goggles, and check the...
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2026.10.20
Why Do Eyeglass Lenses Reflect Green in Photos?
Where do green and blue reflections on clear lenses come from? Distinguish anti-reflective coatings, lens t...
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2026.10.18
Why Do Photochromic Lenses Darken Less Inside a Car?
Photochromic lenses do not respond to brightness alone. Learn how windscreens, UV, temperature and the exac...
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2026.10.17
Why Do Polarized Sunglasses Make Your Phone Screen Look Dark?
Less glare on the water, but a darker phone? Understand polarization, LCD screens and why UV protection is ...
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2026.10.16
Where Do Protein Deposits on Contact Lenses Come From?
Lens deposits are not just dust. Discover how tear components collect on lenses and why cleaning, disinfect...
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2026.10.15
Why Do Your Right and Left Contact Lenses Have Different Powers?
Learn why each eye may need a different prescription, how to keep lenses separate when ordering, and why ch...
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2026.10.14
Why Do Clear Contact Lenses Look Blue in Your Hand?
A faint blue handling tint differs from a cosmetic lens colour. Learn how to read tint descriptions and che...
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2026.10.13
Why Are Hard Contact Lenses Still Used?
Say "contact lenses" today and most people picture soft, flexible lenses. With daily disposables everywhere...
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2026.10.12
Your First Day in Contact Lenses as an Adult
Many people wear glasses for years and try lenses for the first time as adults. For a wedding, for sport, f...
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2026.10.11
Signs You Should Take Your Lenses Out Now
If you wear lenses, some days your eyes feel a little uncomfortable. Most of the time, taking the lenses ou...
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2026.10.10
Which Eye Drops Can You Use With Contact Lenses In?
When your eyes feel dry or turn red, the first thing you reach for is the eye drops in your bag. But if you...
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2026.10.09
What Do Ortho-K Lenses Do to Your Eyes While You Sleep?
Ordinary lenses go in during the day and come out at night. You have probably been told many times not to s...
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2026.10.08
By 2050, Will Half the World Be Nearsighted?
Look around a classroom and you see a lot of children in glasses. Clearly more than in their parents' gener...
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