Steady Methodology

IOT’s proprietary Steady Methodology is a technological breakthrough in free-form digital lenses.



Steady Methodology allows for the strict control of mean power resulting in progressive lenses with unparalleled levels of wearer satistaction.

Features

Steady Methodology carefully controls the mean power (spherical equivalent) of progressive lenses. Steady Methodology dramatically reduces unnecessary mean power in the periphery, especially on both sides of the fitting cross.

Superior image stability for more comfortable vision

IOT has developed new design tools with advanced mathematics that allow for the addition of Steady Methodology into every general use IOT progressive design.

IOT’s patented Steady Methodology is a technological breakthrough in free-form, digital lenses. In addition to controlling for unwanted cylinder power, Steady Methodology addresses unwanted changes to mean power in the lateral areas of the lens.
 
This will enable IOT to provide superior progressive lenses for all lifestyles and market segments. Endless Progressive and Essential Progressive lenses now include Steady Methodology.      

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Inspired by stability

Swim effect is a non-stable perception of the surroundings that causes discomfort, and reduces overall lens satisfaction, making adaptation more difficult. Despite advancements made in progressive lenses, patients still experience swim effect. Lenses designed with Steady Methodology provide wearers with more stable and natural vision.
   
Past efforts to reduce swim effect in progressive lenses have primarily focused on the reduction and precise placement of unwanted cylinder error in the lateral areas of the lens. However, unwanted mean power also plays a significant role in the perception of swim effect, and in overall wearer satisfaction. Mean power error can drastically increase blur and reduce visual acuity.

Distribution of spherical equivalent with and without Steady Methodology

Rx: Sph. Plane +2.00

Traditional progressives lens

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Lens with Steady Methodology

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No alt text available for image Greatly reduced peripheral mean power error with Steady Methodology.

Lens available with Steady Methodology:

Endless Steady Progressive. 
Essential Steady Progressive.

Proven results

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In a double-blind study:

•    They wore the progressive glasses for a week. At no time did they know the type of lens they were wearing.
•    All wearers were asked about their user experience and level of satisfaction.

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