The Shamir Attitude III Sports Lens is designed ‘to offer a complete solution for sports prescription sun wear.’ Incorporating four unique Shamir technologies, the Attitude III lens design allows comfortable and clear vision throughout an ergonomic design employing wide, clear vision zones specifically tailored to active lifestyles and sports frames. The design allows for a wide field of view along with protection from even peripheral incident light.
Sports Lenses and the Attitude III
The Attitude III is available in a range of lens materials, designs, tint colour and density, filters, coatings and a degree of wrap to a frame dependant on the activity. Low weight and good impact resistance are key features for sports vision.
The best sports lenses offer high visual performance and maximum protection. The Attitude III range of lenses achieves this via three separate viewing zones (Figure 1).
[CaptionComponent="2618"]The Attitude III employs a wide and distortion-free far vision zone, with the progressive version offering a moderate increase of power below the fitting point, providing clear and stable vision above and below the horizon. This is ideal for dynamic sports in which rapid and sudden movements would otherwise cause ‘swim’ effects and compromise performance within the ‘safety zone’.
The safety zone is the area 1 to 5 metres in front of the athlete, critical for sports, which must be clearly visible continually in order to plan the next move and to identify obstacles along the way. The Shamir Attitude III Sport incorporates a unique power profile providing the precise optical correction required for comfortable and natural viewing within this crucial area.
The lens also incorporates a dynamic location for the near vision zone ensuring a clear and comfortable view of a watch, GPS display or some other sports gadget, and is available in a wide range of materials, base curves and treatments, each providing 100% UV protection. The Shamir Attitude III range incorporates four Shamir-patented technologies aimed at providing the required advantages and benefits for sports participants:
• Eye-Point Technology III – this allows the manufacturer to simulate and optimise the way the human eye sees through the lens from every angle, through every optical zone, with any reasonable refractive prescription.
• Natural Posture – this is the name of the technology responsible for dynamically positioning the near viewing zone to optimise the ergonomics of the design.
• Intellicorridor – this feature controls the power profile according to the lifestyle needs of each individual patient. It allows optimal viewing within the progressive corridor which is thought to enhance performance during sporting activities.
• As Worn Quadro – this design feature provides accurate prescription correction unique to the parameters of each individual patient within any chosen frame. This technology provides greater design stability and performance for any given frame fit.
[CaptionComponent="2619"]Dispensing notes
Tint colours are a subjective choice for individuals, though some sports have certain colours associated with them. Any tint colour recommendation made should be given as advice only based on the benefits for performance, but ultimately the final choice can only be made by the wearer. The density of any tint should be chosen after carefully reviewing the conditions and environment in which the spectacles will be worn.
The Attitude III includes a hard coat as standard but Shamir also recommend the Glacier Sun UV coating which delivers an achromatic bloom-free finish, excellent scratch resistance and comprehensive E-SPF UV protection to increase transmission and protect the colour of the lenses.
The minimum fitting height of the Shamir Attitude III Sport is 18mm, with an available prescription range of -6.50DS to +5.25DS with reading additions ranging from +0.75 to +3.50DS. As the Attitude III is tailor-made to the specific needs of individuals, it is important to remember that, when dispensing the product, extra measurements will need to be taken to guarantee maximum performance. Required measurements include:
• full frame data (A, B, DBL and shape)
• mono fitting heights and PDs
• face form angle
• pantoscopic tilt
• back vertex distance
• base curve (Figure 2)
Lens materials
The Shamir Attitude III family is available in materials including Trivex DLC and NXT, which are an excellent choice if impact-resistance is an important factor for the patient. Also represented in the range are photochromic options including Transitions Xtractive and Signature VII. The Attitude III product line is, in summary, ideally suited to all those who have active outdoor lifestyles and require the very best in prescription sports sun wear.
Tanya Storey FBDO, head of sales and professional services
