Quasar SV

This brilliantly conceived yet simple-to-fit contact lens is the first choice for many practitioners around the world. Thousands of successful long term wearers confirm this enduring product to be the ultimate in its class.

Superbly conceived and easy to fit, it’s the first choice for many practitioners around the world. Plus thousands of successful long term wearers confirm it as the ultimate lens in its class.

Designed by practititoners for practitioners, the Quasar lens is truly aspheric from centre to edge. The central area consists of a modified conic profile, which is designed to flatten at a much slower rate than a fixed elliptical curve. This improves centration characteristics and eliminates any significant positive/astigmatic aberration over the central 7mm. This unique aspheric geometry results in slight apical clearance and close alignment over the mid-peripheral cornea. Edge clearance is achieved by the addition of a second aspheric edge band. Constant apical and edge clearance are maintained independent of base curve and total diameter.

The Quasar lens has been designed to make the transition from fitting spherical lenses to aspheric lenses as straightforward as possible. The initial trial lens selection is based on the corneal cylinder as follows: –

Initial Trial Lens Selection

0.00 to 1.50D Cyl Select lens on flattest K /nearest steeper lens
1.50 to 3.00D Cyl Select 0.10 steeper than the flattest K
Over 3.00D Cyl Consider Quasar Toric


The trial lens is placed on the eye and an assessment of fit is made. Either a flatter lens is selected if the fluorescein pattern is like Figure 1


or a steeper lens is selected if the fluorescein pattern is like Figure 2



Once an optimal fit has been attained, as demonstrated in Figure 3, an over refraction is carried out. An allowance is then made for effectivity and the final radius and power are determined.



If the total diameter is considered too small and there is insufficient coverage of the pupil or poor centration, the larger diameter should be ordered with NO CHANGE to the radius or power. If the lens is considered too large and there is insufficient vertical movement with the blink, the smaller total diameter should be ordered, again with NO CHANGE to radius or power.

The final fitting lens should give good vertical movement with the blink and move temporally and nasally looking left and right. Vision should remain clear between blinks and there should be no increased flare from a spot light source in a darkened room. Optimal fitting should result in a very comfortable lens.

Fitting sets are available in 12 or 24 lens sets in either 0.10 steps or 0.05 steps between 7.25 and 8.40mm. A feature of the fitting sets is that the total diameters vary over the range as follows:

Fitting Sets And Total Diameters
7.25 to 7.55 9.20
7.60 to 8.20 9.60
8.25 to 8.40 10.00


Standard fitting sets have a B.V.P. of -3.00D or +3.00D. However, custom fitting sets can be supplied with a different B.V.P. upon request.

As trial sets are used continually and from patient to patient, it is important that an adequate cleaning and storage regime is adopted. 

Single use trial sets are also available, consisting of eight lenses manufactured in PMMA material, base curves ranging from 7.30 to 8.40mm in 0.10 steps, plano power and 9.60mm diameter. Other parameters can be custom made available on request.

  • Excellent visual performance
  • Optimal balance between transmissibility and wettability
  • Exceptional comfort
  • Improved centration and stability of fit
  • Guaranteed reproducibility
  • Choice of lens materials
  • Simulated ordering and fitting available



We suggest Optimum Extra. Boston Materials are also available.
Radii 7.00 to 9.00mm in 0.05 steps
Total Diameters 8.80 to 11.00mm in 0.1mm
BV Power Range +25.00 to -25.00 in 0.25D steps


Quasar Brochure

Meet every challenge with the Quasar range of RGP lenses. Range includes: Single Vision, Toric and Multifocal.

Contact Lens Wear Without Compromise

Using breakthrough manufacturing technology, Tangible Hydra-PEG bonds a 40nm hydrophilic coating to the surface of specialist contact lenses, significantly increasing wettability and lubricity.

The result? Happy patients who can enjoy a life of comfortable contact lens wear free from compromise.

Tangible Hydra-PEG is available with all No7 GP lenses. Just ask our Customer Care team to add Tangible Hydra-PEG when you place your next order.

Perfect for all GP patients, Tangible Hydra-PEG offers:

Increased wearing times

Improved ocular health

Superior surface properties

Improved wearing experience

“Brilliant! I’ve gone from using eye drops 5 times a day to 0...”

Keratoconus RGP wearer | 50+ years


Lens preference

Research shows that 70% of patients prefer a Tangible Hydra-PEG coated lens to their habitual, uncoated lens.


End of day comfort

67% of patients said they prefer a lens coated with Tangible Hydra-PEG than uncoated.


Dry eye comfort

When asked about comfort, dry eye patients rated lenses coated with Tangible Hydra-PEG ‘8 out of 10’, compared to ‘3 out of 10’ for uncoated.


70% prefer a Tangible Hydra-PEG coated lens

No7 Recommends - Ote Fine

All-in-one comfort solution for RGP contact lenses

Manufactured using the highest grade ingredients and exclusive to independent opticians, Oté Fine is the complete solution for all your RGP patients. Oté Fine is perfect for your EyeDream Ortho-k wearers too.

Kevin Taylor

Technical Director

We have a dedicated technical support team, headed by Kevin, with decades of experience ready to help and advise you on any fitting issues. If you need support, please call: 


01424 850620

Frequently Asked Questions

We’re here to help. If you can’t find the answer to your question, why not give us a call. Our offices are open Mon-Fri 9:00 – 17:30

Can I order these lenses empirically
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How long will it take to manufacture lenses

Standard delivery time is 4 days. However, we are able to accomodate more urgent orders. If you need to receive your lenses more urgently, please tell us the the time of order.  

What is the returns policy?

We offer a standard 90 day full refund (minus handling charge) on Quasar lenses.   

We are here to help

Drop us a line anytime, and one of our customer service team will respond to you as soon as possible.