Eyewear, explained
The Designer Glasses Editorial Team 
In a designer frame, you’re paying for four things in varying proportions: the raw material and how much of it is used, the labour and machinery behind the construction, the brand’s design and marketing, and — sometimes — genuine engineering in the hinge, lens or finish. The split between those four is rarely obvious from … Read more
The price of a pair of glasses is driven mostly by three things: the material and how much work it takes to shape, the construction of the hinges and fittings, and what the lenses cost to make and finish. Brand name adds a layer on top of that, but it doesn’t explain the underlying object … Read more
A scratched lens cannot be repaired in any meaningful sense — the mark is a small loss of surface material, not something that can be filled back in. Polishing kits and home remedies can sometimes reduce how visible a light scratch looks, but they thin the lens surface to do it, and often make things … Read more
A frame is worth repairing when the damage is mechanical rather than structural — a loose hinge, a snapped screw, a bent temple, a cracked nose pad — and the material underneath is sound. It stops being worth it once the break runs through the frame’s core structure, keeps recurring, or the frame was never … Read more
There’s no fixed expiry date on a pair of glasses. A well-made frame in good material can last a decade or more; the lenses inside it usually need replacing sooner, often every two to three years, because coatings wear and prescriptions change. Frame and lens age separately, and it’s worth knowing which one is failing … Read more
Sweat is salty and slightly acidic, and sunscreen is a cocktail of oils, alcohols and UV-filtering chemicals designed to bind to skin. Neither is designed with metal plating, acetate, or lens coatings in mind. Left on a frame, both accelerate corrosion, cloud coatings, and can soften or discolour acetate over time. None of this happens … Read more
Glasses slip in hot weather because skin gets oilier and sweatier, which reduces the friction that normally holds nose pads and temple tips in place, and because some frame materials soften very slightly at skin temperature. The fix is rarely the frame itself — it’s usually the nose pad contact, temple length, or weight distribution … Read more
Glasses fog because warm, moisture-laden air — usually breath — hits a lens surface that is colder than the air itself, and the water vapour condenses into visible droplets. Anything that widens that temperature gap, or channels breath upward across the lens, makes it worse. Anything that closes the gap or redirects the airflow helps. … Read more
New glasses often feel wrong at first because the eyes, not the frame, are doing most of the adjusting. A different lens shape, a slightly different tilt or position on the face, or a genuine change in prescription all ask the brain to recalibrate — and that recalibration usually settles within a few days to … Read more
Most glasses benefit from a professional check every six months, and an adjustment whenever they start slipping, pinching, or sitting unevenly — whichever comes first. There’s no fixed schedule that suits everyone; frame material, how often the glasses come off, and daily habits all change how quickly fit drifts. Is there an actual recommended interval? … Read more
About what you read here. Everything on The Designer Glasses is general information and our own editorial opinion. We research carefully and we say when the evidence is unclear, but we can be wrong, things change, and no article can know your particular situation. Please do your own research and make your own judgement rather than treating anything here as the final word. This is not medical advice, not a diagnosis, and not a substitute for speaking to an optometrist, optician or eye doctor about your own eyes, vision and eyewear. We are writers and researchers, not clinicians. We do not recommend prescription treatments or give doses. If something is painful, getting worse, or worrying you, please talk to a professional — going early is not an overreaction.