How to Properly Adjust Your Eyeglass Frame for Maximum Comfort and Fit

The frame of an eyeglass plays a crucial role in the overall production process. Even with perfect prescription accuracy and meticulous lens crafting, the final product can fall short if the frame isn't adjusted to fit the wearer’s needs.

So, how should we properly adjust an eyeglass frame?

1. Check the Frame’s Outline

Using a pupil distance ruler, place it horizontally along the center of the frame and check if the nose pads on both sides are symmetrical and aligned at the same angle. The ruler should make contact with the outer edges of the eyeglass frame to ensure the distance between the left and right lens circles is equal, approximately 3-4mm apart.

2. Ensure Both Lenses Are on the Same Plane

If the two lenses aren’t on the same level, there are two possibilities: one, the lenses form an X shape; two, the distance between the lenses and the face varies (one is closer and the other is further).

3. Check the Temple Angle

When fully opened, the angle between the temple arms and the horizontal plane should be around 95°, with both sides symmetrical.

4. Ensure Both Temples Are on the Same Plane

The angle between the temple arms and the vertical plane when fully opened should be around 75°-80°, and the left and right temples should be aligned on the same plane.

5. Check the Curvature of the Temples

The temple arms should curve behind the ear comfortably—tight enough to prevent the glasses from slipping, but not so tight that they cause discomfort.

6. Check for Frame Levelness

Place the glasses on a flat surface. Both temple arms should make contact with the surface to ensure the glasses sit evenly.

7. Check the Tightness of the Screws

Alternate opening and closing the temple arms. Check if the screws are tightened enough to keep the arms open and feel free of resistance.

These are the general steps for adjusting the eyeglass frame. In future, we’ll dive into specific adjustments for different types of frames and materials.