Part 1: Pitfalls to Avoid Before Eye Examination
1. Never rely solely on computer optometry results
Computer optometry is only a preliminary reference. A comprehensive optometry + trial fitting is a must; otherwise, you are highly likely to suffer from dizziness and eye strain.
2. Don’t trust "free quick optometry"
Formal optometry takes at least 10-20 minutes, including tests for astigmatism axis, pupillary distance, and binocular balance. Most quick optometry services are inaccurate.
3. Measure pupillary distance separately
An incorrect pupillary distance renders even the most expensive lenses useless, causing eye fatigue and double vision.
4. Minors are recommended to take cycloplegic refraction
Without cycloplegia, pseudomyopia is easily mistaken for true myopia, leading to over-prescribed lenses.
Part 2: Pitfalls for Lenses (The Most Deceptive Part)
1. Higher refractive index ≠ better
? Within 300 degrees: 1.56 / 1.60 lenses are sufficient
? 300-600 degrees: 1.60 lenses offer the best cost performance
? Above 600 degrees: Consider 1.67 / 1.74 lenses
A higher refractive index makes lenses thinner but lowers the Abbe number, reducing visual clarity.
2. Don’t blindly pursue imported brands
Many so-called "foreign brands" are actually manufactured domestically. Top domestic brands (such as Mingyue, Wanxin, Conant) provide stable quality with higher cost performance.
3. Choose functional lenses based on actual needs
? Daily commuting: Anti-blue light + hard-coated lenses are enough
? Students/people with long-time near work: Opt for reading/ myopia control lenses (with formal optometry)
? Driving: Polarized sunglasses
Avoid "all-in-one coating" lenses, which come with an extremely high premium.
4. Watch out for "special price lens packages"
Low-cost packages usually come with low-quality unbranded lenses, which are poor in wear resistance, easy to yellow, and have severe light reflection.
Part 3: Pitfalls for Eyeglass Frames
1. Lighter is not always better
Pure titanium and β-titanium frames are lightweight, but overly light frames lack sufficient support, slipping and deforming easily.
2. Size matters more than style
Inappropriate frame width shifts the pupillary height and distance, causing eye strain. The ideal match: frame width + bridge width ≈ pupillary distance.
3. Avoid large frames for high myopia
Larger frames lead to thicker, heavier lens edges and are more likely to cause dizziness.
4. Be cautious when buying frames online
Trying on is essential; online purchases may result in tight-fitting, slipping frames or overly long temple arms.
Part 4: Avoid Misleading Sales Tactics
1. "Anti-blue light lenses protect eyes and cure myopia"
→ False. Anti-blue light lenses only reduce eye irritation and cannot prevent or cure myopia.
2. "You need to upgrade lens power as soon as your degree increases"
→ Not necessarily. For adults with stable degrees, lenses can be prescribed for comfortable correction instead of full correction.
3. "Expensive lenses are definitely better than cheap ones"
→ False. Prioritize lenses matching your degree and needs; high-priced lenses often include unnecessary brand premiums.
4. "This lens is unbreakable and scratch-proof"
→ False. All resin lenses can be scratched; no lenses are 100% unbreakable. Be wary of such exaggerated claims.
Part 5: After-sales & Additional Pitfalls
1. Confirm after-sales service in advance
Check the lens replacement, frame adjustment and return policies before payment; avoid stores with no after-sales support.
2. Refuse unnecessary add-on items
Salespeople may push expensive lens cleaning kits, anti-fog sprays and other accessories; only buy what you really need.
3. Inspect the lenses and frames on the spot
Verify the lens brand, parameters, and frame model to prevent being given counterfeit or inferior products.
