Prescription glasses: a comprehensive guide to choosing frames

1. Face shape: where to start

Face shape is one of the most common criteria used when choosing a pair of glasses. It is not a strict rule, but a useful starting point.

• Round face: square or rectangular frames.
• Square face: round or oval frames.
• Oval face: almost all forms work.
• Triangular face: frames that are lightweight at the bottom.
• Face to heart: slim, soft frames.

Find out more in the glossary dedicated to face shape.

2. Materials: aesthetics, comfort and durability

Materials affect weight, strength, flexibility and style.

Acetate

Stylish, durable and available in a wide range of colours. Perfect for fashionable frames.

Metal

Lightweight, minimalist, ideal for a clean, professional look.

Titanium

Ultra-lightweight, hypoallergenic, durable: perfect for anyone looking for absolute comfort.

Combined

Acetate + metal for a balance of style and lightness.

Frame materials are different from lens materials: check the front and temple materials in the model details, then assess weight and fit when trying the frame on.

3. Frame measurements: a detail that makes all the difference

These measurements determine comfort, stability and aesthetic appeal. The key values are:

• Front width: it must be in proportion to the face.
• Bridge: essential for stability and comfort.
• Rod length: it affects the fit.
• Lens diameter: also important for centring.

To understand lens width, bridge size and temple length, read our glasses measurement guide. Lens centring is a separate step: find out more about centring.

4. Style and personality

The frames should reflect the wearer’s personality. As part of the Isolani Experience™, we analyse:

• colours that flatter your skin tone
• lines that bring harmony to the face
• lifestyle and professional context
• fashion trends and personal preferences

5. Frames and lenses: a crucial balance

The frames must be compatible with the lenses you have chosen. Here are a few examples:

• high prescriptions → small, stable frames
• progressive → frames with sufficient height
• digital use → lightweight and comfortable frames

Find out more in the guide dedicated to prescription glasses.

Find your frames and choose how to complete them

Put these tips into practice by exploring our optical frames catalogue: compare shapes, materials and measurements on the product pages. To order lenses too, see our guide to prescription glasses online, with information about your prescription and the options available for compatible frames.