Integrated Transmittance Control Technology

To make this possible, HOYA developed a new computer-controlled 3D simulation-calculation program: the ‘ITCT’ system (integrated Transmittance Control Technology’). Thanks to this technique, it is now possible, for the first time ever, to achieve a perfect balance in the interaction between moving, far images and static, near images.

The total progressive surface is very precisely scanned and analyzed, and the corresponding asymmetrical viewing areas of the left and right lenses are brought into balance with each other. The result: perfectly overlapping image formation between the left and right lenses.

Via a newly-developed software program, distance and reading strengths are linked to the reproduction of vision at various distances. Important optical information, such as angle of inclination, cornea distance for plus and minus strengths and depth perception, is integrated and serves as input for 3D ‘Visual reality’ information. The information is then converted into data that are responsible for an improvement of asphericity, resulting in the harmonious and efficient distribution of the progression over the entire surface of the right and left lenses.

The improved horizontal, asymmetrical design ensures that peripheral astigmatism is reduced in all areas. When the conversion of corresponding visual images parallels reality, the visual system will be able to respond to interaction with the environment quicker and better, be able to switch far more rapidly from far visual information to near visual information, and guarantee stable reading comfort.

Natural Vision With the Hoyalux Summit Pro

Multiple Power by Addition Design

The higher the addition value, the more strongly the peripheral astigmatic area influences natural visual perception. This results, particularly, in restrictions in the field of vision, as a result of which functionality of the lenses becomes an issue.

The ‘Multiple Power by Addition Design’ principle offers the solution to this problem. By using the ‘ITCT’ system, advancing strengths in the intermediate progression area can be changed from a dynamic into a stable action and vice versa, in a natural and very effective manner. The intermediate zone is wide, and variable reading compensation occurs comfortably. What is more, by linking distance strength to the addition value, peripheral progression areas are constantly modified, until maximum tolerance has been achieved.

The ‘Hoyalux Summit Pro’ has a total progression length of only 14 mm, due to which the compensating addition strength is established quickly and efficiently. ‘ITCT’ facilitates very effective reading compensation and the presbyopian has a wide, distortion-free reading width and complete reading correction. The ‘Multiple Power by Addition Design’ system ensures that the interaction between sharp focus on distance and sharp, detailed focus on close-range objects occurs smoothly. Vertical head movements and searching for the addition, corresponding to the distance concerned, are now problems of the past. Your customers will be able to read in a manner that is natural, relaxed and comfortable, both in terms of depth and width.

Three-Dimensional Sight and Effective Reading in Balance

New Dimension Variable Inset Design

The relationship between accommodation, convergence and depth perception plays such an important role in near visual perception that Hoya decided to add a new personalized dimension to the ‘Variable Inset’ decentration principle.

The ‘ITCT’ system was used when developing the ‘New Dimension Variable Inset Design’. Binocular, overlapping image formation and convergence were linked to the separate basic curves and compensating addition powers. The system indicated that a different calculation was necessary for each variation. With no less than 120 different ‘Inset’ variations, the ‘New Dimension Variable Inset Design’ is able to calculate the ideal inset design, precisely tailored towards compensation of the near convergence reflex components and resulting in perfect binocular single near vision perception.

To be able to completely guarantee depth perception, reading focus depth was included separately in the calculation, depending on the addition value. Another more accurate combination of binocular single vision and stereopsis near depth perception.

The advantages:
• Better interaction, and thus also switching, between moving arid stable images
• Optimized peripheral tolerance and thus comfortable peripheral vision
• Perfect reading compensation in both a vertical and horizontal direction
• Easier acceptance of the progressive system