Natural Posture is an innovative ergonomic design technology enabling the development of lenses that optimally accommodate eyeglass wearers’ head posture when reading or focusing on nearby objects.
Natural Posture technology dynamically locates the near viewing zone within the progressive lens corridor, taking into account the positive or negative power of the prescription. This minimizes the need to tilt one’s head forward or back or raise and lower a book in an attempt to bring the text into focus. Any postural discomfort while reading is thereby minimized, ensuring the patient enjoys a natural, comfortable posture.
The technology enables Shamir developers to dynamically position near viewing zones on lens corridors to optimize vertical head and eye motion and ensure maximum viewing comfort in these zones.
Most people read while holding the book at about 40cm, at a gaze angle of ~30°. If the near viewing zone does not correspond to this angle, patients compensate by tilting the head forward or back, or by raising or lowering the book, leading to discomfort due to the unnatural reading position.
The technology positions the near vision zone higher for minus RX and lower in plus ones, improving the binocular prismatic disbalance for anisometropic cases, ensuring a natural viewing experience.
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