Broke your sunglasses away from home? Field repairs that actually hold

Most sunglasses failures away from home are one lost screw, and that is fixable with a paperclip. The rest of this piece is the other cases, but it is worth knowing the common one first because it is the one that ruins a day unnecessarily.

The order to work through: identify what actually failed, try the proper fix, improvise if you cannot, and know when you are carrying a frame home rather than wearing it.

A lost hinge screw

The commonest failure by a wide margin. The arm falls off and the screw is gone.

The proper fix: a replacement screw. Available from opticians, pharmacies in many countries, hardware shops, and eyewear repair kits. Many opticians will fit one for nothing, which is worth asking before buying anything.

The field fix, in order of preference:

A short length of thin wire, pushed through the hinge barrel and bent over at both ends. Trim to length. This holds well and is the best improvisation.

A paperclip, straightened, cut to length with the ends bent. Same principle, slightly thicker, works on most frames.

A fishing swivel pin or a small safety pin, cut down.

A toothpick, snapped to length and pushed through. Wooden, so it will not last, but it holds for a day and it is in every hotel room.

Monofilament fishing line or strong thread, threaded through the barrel several times and knotted tight. Surprisingly durable and completely invisible from a distance.

What to avoid: glue in the hinge. It fills the barrel, seizes the joint and makes a proper repair much harder later.

If the screw is still there but keeps backing out, the thread is worn. A drop of clear nail polish on the thread holds it — nail polish is available everywhere and it is the standard trick. Our how to fix loose sunglasses piece covers this at home.

A popped lens

Second commonest, and usually recoverable.

On a full-rim plastic frame: warm the frame slightly — warm water, or a few minutes in the sun, not hot — so the rim becomes more flexible. Seat one edge of the lens in the groove, then work round pressing the rim over the lens edge with your thumbs. It will go.

Get the orientation right. Lenses are not symmetrical and a lens in upside down will look subtly wrong and may not seat. Check the curvature matches the frame before pressing.

On a metal frame: unscrew the rim screw, open the rim, place the lens, close and tighten.

On a semi-rimless frame: the nylon cord has come out of the lens groove. Re-seating it needs patience and a blunt tool — the corner of a credit card works.

Critical warning: never apply real heat to a polarized or mirrored lens. They are laminates, and heat delaminates them permanently. Warm water is the limit. This and the full technique are in when a sunglasses lens pops out.

If the groove is stretched and the lens will not stay, a thin smear of clear silicone in the groove holds it temporarily. Not glue on the lens face.

A snapped arm

Harder, and usually a get-home repair rather than a fix.

A splint. Two short lengths of something rigid — lolly sticks, a cut cable tie, a split pen barrel — on either side of the break, bound tightly with tape, thread or thin wire. It will be ugly and it will work for a few days.

Tape alone rarely holds, because the break is at a point of leverage.

If the arm snapped at the hinge, sometimes the remaining stub can take a wire pin through it. Worth trying.

If one arm is gone entirely: a retainer cord attached to the remaining arm and round your neck holds the frame on surprisingly well, worn slightly low. Not elegant, entirely functional. Sunglasses straps and retainers covers the types.

Superglue on a frame break sometimes holds and often does not, because the surface area is small and the stress is high. It also makes a professional repair impossible. Try the splint first.

A snapped frame front

Generally the end of the frame.

The bridge and the rim carry the lens, and a break there means the lens cannot be retained. Glue does not reliably hold a loaded joint.

Accept it, and solve the eye protection problem instead. That is the part that matters.

A bent frame

Not a break, and often correctable.

Warm water on a plastic frame, then gently bend back. Plastic frames are designed to be adjusted with heat, and warm tap water is enough to make them compliant.

Metal frames bend cold, carefully, a little at a time.

Check it on a flat surface. A frame that rocks is still twisted. This matters more than it looks for anyone with astigmatism, because a twisted frame rotates the correction axis — see sunglasses for astigmatism.

Splayed arms — the usual result of pushing glasses onto your head — bend back in with gentle pressure. How to fix loose sunglasses covers the technique.

Where to find parts

An optician. The first stop anywhere. Screws, nose pads, a free adjustment, and often a repair on the spot.

A pharmacy. Many stock eyewear repair kits, particularly in holiday destinations.

A hardware or hobby shop. Small screws, wire, and a screwdriver that fits.

A hotel reception. Sewing kits, paperclips, tape, and sometimes a repair kit in the desk.

A fishing or tackle shop near the coast. Fine wire, swivels, monofilament — ideal for this.

A jeweller. Has the right screwdrivers and often the right screws, and will usually help.

An electronics or phone repair stall. Tiny screwdrivers in abundance.

The part that actually matters

If the repair fails and you are somewhere bright, the priority is your eyes rather than the frame.

Buy something with a stated UV specification, even cheaply. The thing to avoid is a dark lens with no filter, which dilates your pupil while admitting ultraviolet and is worse than wearing nothing — the mechanism is in UV protection vs dark lenses, and how to spot fake sunglasses covers checking a claim.

A brimmed hat is a genuine substitute for a day or two, and in some conditions better than nothing — it handles the overhead light that does most of the squinting. Sunglasses and hats covers it.

On snow or water, do not go without. Photokeratitis — corneal sunburn — is painful and happens within hours in high reflective conditions.

Preventing the next one

Carry a repair kit. They cost almost nothing, weigh almost nothing, and contain the screws and the screwdriver you will need.

Carry a second pair on any trip where it matters — the argument in travelling with sunglasses.

Stop putting them on your head, which causes most splayed arms and a good share of drops.

Rinse the salt out of the hinges, because corroded screws are the ones that fail. Squeaking sunglasses hinges covers why.

Check the screws every month or so. Thirty seconds, and it prevents the commonest failure entirely.

Frequently asked questions

The short version

It is probably a screw, and a paperclip or a length of wire fixes it. Nail polish on the thread stops it backing out again.

A popped lens goes back in with warm water and thumb pressure on a plastic frame — never real heat on a polarized lens.

A snapped arm splints for a few days. A snapped front does not.

And if nothing holds, buy a pair with a real UV figure rather than going without, or wear a brimmed hat. The eyes matter more than the frame.