How to Fix Loose Eyeglass Hinges and Screws at Home

Eyeglass screws loosen over time. Every time you open and close the temples, the hinge moves slightly, and over weeks or months that motion can back a screw out. A loose screw makes the temple floppy; a lost screw means the temple falls off entirely.

Most hinge problems can be fixed at home in a few minutes with an inexpensive eyeglass repair kit. Some problems, however, are better left to an optician. This guide explains both.

Anatomy of an eyeglass hinge

A standard hinge has a few parts:

• Barrels: small interlocking cylinders on the frame front and the temple. Most hinges have between two and seven barrels.
• Hinge screw: a tiny screw that passes through the barrels and acts as the pivot.
• Spring hinge (on some frames): a spring inside the temple that lets it flex outward and spring back.
• Nut (on some frames): a small nut on the bottom of the hinge that holds the screw.

What you need

Many inexpensive repair kits include several screwdrivers, a set of screws and sometimes nose pads.

How to tighten a loose hinge screw

1. Set up your workspace. Lay a towel on a table under good light. Close the sink drain if you are working in a bathroom.
2. Open the temple fully so you can see the hinge clearly.
3. Fit the screwdriver carefully into the screw head. Make sure it is the right size; a screwdriver that is too small can strip the head.
4. Hold the frame steady with your other hand, supporting the hinge area.
5. Turn clockwise gently until the screw is snug. Do not overtighten, especially on plastic frames.
6. Test the hinge. Open and close the temple a few times. It should move smoothly with slight resistance and not wobble.

If the screw keeps loosening, a tiny drop of removable thread-locking fluid on the threads can help. Avoid permanent adhesives, which make future repairs difficult. Some people use clear nail polish over the screw head as a temporary measure, but use it sparingly and keep it away from lenses.

How to replace a lost screw

1. Find a matching screw from a repair kit. Try sizes until one fits without force.
2. Align the barrels. Line up the holes on the frame front and temple barrels. This can be fiddly; some people use a small pin or toothpick to line them up first.
3. Insert the screw with tweezers or a magnetic screwdriver.
4. Tighten gently until snug.
5. Trim if needed. If the replacement screw is too long, an optician can trim it. Some kits include self-aligning screws with a long guide tip that you snap off after installation.

Spring hinges

Spring hinges have a spring inside the temple that makes the hinge harder to align. To insert a screw, you may need to pull the temple outward to extend the spring until the barrels line up. Inserting a small pin or paperclip into a gap in the spring mechanism can hold it open. If you find this difficult, an optician can do it quickly.

Nose pads

Adjustable nose pads attach to the frame with small arms and screws. To replace a nose pad:

1. Remove the small screw holding the old pad.
2. Fit the new pad onto the pad arm.
3. Replace and tighten the screw.

Nose pads come in push-on and screw-in styles; check which type your frame uses. Replacing discolored or hardened pads makes glasses more comfortable and more hygienic.

When the frame fits poorly

If your glasses slide down your nose or sit crooked, the fix may be an adjustment rather than a screw.

• Metal frames: small bends to nose pad arms and temples can change fit. Opticians do this with special pliers.
• Plastic and acetate frames: adjustments usually require gentle heat to soften the material before bending.

Trying to bend frames at home risks snapping them, especially cold acetate or older frames. An optician can usually adjust frames quickly, often for little or no cost.

When to see an optician

• A screw has stripped and will not tighten.
• The hinge barrel has cracked or broken off.
• The frame is bent or twisted.
• A spring hinge is broken.
• The lens is loose or has popped out of the frame.
• You have rimless or semi-rimless glasses with lens mounting screws.

Rimless glasses deserve extra caution, since the lenses are mounted with screws or small fittings through the lens itself. Overtightening can crack the lens.

Preventing loose hinges

• Take glasses off with both hands.
• Avoid pushing glasses onto your head.
• Store glasses in a case. See how to store glasses.
• Check screws every few months and tighten gently before they fall out.
• Keep a small repair kit at home and in your travel bag.

Repair checklist

• Towel, good light and the right screwdriver.
• Gentle tightening, no overtightening.
• Replacement screws that fit without force.
• Removable thread-lock for screws that keep loosening.
• Optician for bent frames, stripped screws and rimless glasses.

Building a home repair kit

A home kit costs little and saves trips to the optician for simple fixes. Include a precision screwdriver set, an assortment of eyeglass screws, a couple of pairs of nose pads in your frame's style, small tweezers and a magnifier. Store it in a small box with a lid so screws are not lost.

Hinge care for sunglasses

Sunglasses hinges face the same wear as prescription frames, plus sand and salt. Rinse hinges after beach use and check screws at the start of each summer.

Signs a hinge needs attention

A temple that swings freely, a clicking sound when opening the glasses, a gap between the hinge barrels or one temple sitting lower than the other are all signs that a screw is loose or the hinge needs an adjustment.

Frequently asked questions

What size screwdriver do I need for glasses?

Most eyeglass hinge screws need a precision flat-head screwdriver around 1.4 to 2.0 mm, or a small Phillips. Repair kits include several sizes.

Why do my glasses screws keep coming loose?

Normal opening and closing gradually loosens screws. A tiny drop of removable thread-lock can help, as can handling glasses with both hands.

Can I fix my glasses with a paperclip?

A paperclip or twist tie can hold a temple on in an emergency, but it is not a repair. Replace it with a proper screw as soon as you can.

Will an optician fix my glasses if I did not buy them there?

Many opticians will tighten screws or make small adjustments regardless of where you bought the glasses, sometimes for a small fee.

Bottom line

Loose hinge screws are easy to tighten at home with the right screwdriver and a gentle touch. Replace lost screws from a repair kit, but take bent frames, stripped screws and rimless glasses to an optician.

If in doubt, stop before you force anything. A loose screw is a small problem; a snapped hinge or cracked lens is a much more expensive one.