Progressive lenses contain distance, intermediate and near viewing areas, but these areas are not divided into equal fixed widths.
The usable zones vary with optical design, addition, progression length and prescription.
01 · DISTANCE ZONE
The upper region provides distance vision
Typical designs place distance vision toward the top for walking, driving and other far tasks, while exact width and shape depend on the design.
The distance area is usually located in the upper portion, but that does not mean the entire upper lens behaves as one uniformly clear zone. Peripheral aberration and prescription can limit the truly comfortable width, so wearers who prioritize driving may need to compare the design emphasis on distance vision.
02 · INTERMEDIATE ZONE
Intermediate vision lies between distance and near
Computer and indoor working distances are viewed through the progression region. Because power is changing there, the usable horizontal width can feel narrower.
Intermediate vision is one of the areas where progressive designs can feel most different. Because power is still changing between distance and near, the comfortable position and horizontal width for a computer depend on working distance, add power and corridor design.
03 · NEAR ZONE
The lower area contains the full near addition
Reading and phone use rely on the near region. Its effective size depends on addition, working distance and design.
The near zone sits lower where the addition reaches its intended value, but usable reading width and position also depend on inset and working distance. A book and a phone are held at different distances and gaze angles, so a single claim of a “wide near zone” cannot describe every near task.
04 · DESIGN PRIORITY
Not every design gives equal priority to all distances
Some designs favor distance and dynamic use; others allocate more useful width to intermediate or near. Lifestyle should match the design priority.
Progressive design is a trade-off rather than a way to maximize distance, intermediate and near simultaneously without consequence. Expanding or softening one region changes how other zones and peripheral aberrations are distributed, which is why lifestyle questions can meaningfully guide design priorities.
05 · ADDITION
Addition also influences zone geometry
A higher add requires a larger power change in the same lens and can alter intermediate width and peripheral aberration distribution.
As add power rises, the total power change that must be created across the lens also rises and can affect the intermediate corridor and peripheral aberration pattern. Even so, add alone does not determine zone width; designs with the same add can feel different because their progression and distribution strategies differ.
SOLUTION GUIDE
Solution guide
Prioritize useful distance vision.
Evaluate intermediate width and working distance.
Evaluate near area and actual working distance.
GLANOS LENS CHECK
One progressive lens cannot provide the widest possible field for every task
For prolonged computer or near work, an occupational or office lens may provide a more appropriate design.
CAUTION
Do not describe distance, intermediate and near as fixed proportions
Usable zones vary with product, prescription, add and fitting conditions.
GLANOS EYEWEAR
There is a reason glasses feel uncomfortable.
progressive lenses · distance · intermediate · near · add power · multifocal lenses