Quasar Plus

Our Quasar Plus lens cleverly utilises the eyes’ tears to provide precise vision at distance, intermediate and near. Clinical trials using empirical fitting have delivered an outstanding success rate of 86%.

The innovative Quasar Plus design cleverly uses the eyes’ own tears to deliver precise vision at distance, intermediate and near. Clinical trials conducted using empirical fitting have shown impressive results – a success rate of 86%.

The Quasar Plus is a distance centre multifocal with a graduated annulus of near vision where the progressive power is incorporated into the optics of the back surface of the lens. The aspheric design of the optical zone is based upon the patient’s degree of ametropia and the reading addition required, so the higher the myopia and the higher the add, the greater the asphericity. By incorporating the asphericity into the back surface, the profile of the tear film will be altered, so when assessing the fit of the Multifocal, it is important to understand that the resulting fluorescein pattern will be different from that obtained with a single vision lens.

The Multifocal is designed to mimic the tear profile of a single vision lens with the exception of the variable central aspheric back surface. This alters the tear layer thickness and generates the reading addition. The design is based on the fitting of a single vision lens, so the best fit for a standard diagnostic lens is required. The diagnostic lens should centre well with displaced or high-riding lenses being avoided. With this information, we will then incorporate the required degree of asphericity to generate the reading addition.

The lens ordered will have required altered fluorescein pattern and the patient will notice an increased depth of focus, improving their ability to read and perform close work. For some this improvement is instant, but for others, a longer adaptation period is required. Assuming satisfactory acuity for distance and near, the patient should trial the lens for up to two weeks before making any change to the lens power from resultant over-refractions.

If the fit of the lens is poor then check the fitting using the original single vision diagnostic set. When ordering a change in prescription we will need to know the original lens order so that the required alterations can be incorporated.

If you originally ordered:
7.80 9.60 -4.50 Add +2.00
and you find an over-refraction of -0.50 distance and no extra add is required (i.e. plano over-refraction in front of patient for near vision) then you will need 7.80 9.60 -5.00 Add +2.50, inform the laboratory you need an extra -0.50 in the distance and no extra power for near.

If you originally ordered:
7.80 9.60 -4.50 Add +1.50
and you find an over-refraction of -0.50 distance and an extra add of +0.50 is required (i.e. +0.50 over-refraction in front of patient for near vision) then you will need 7.80 9.60 -5.00 Add +2.50, inform the laboratory you will need an extra -0.50 in the distance and an extra +0.50 for near. Remember: This lens needs at least 15 to 20 minutes to settle for the tear film to stabilise and provide the reading addition.

Contra Indications

As with all lenses, not every patient is suitable for all designs. To maintain confidence and a high success rate, avoid prescribing this lens to patients who present the following:

  • Poor centration with the single vision diagnostic lens. The Quasar Plus Multifocal lens will work best when centration is good. A high-riding lens or displaced lens will not allow the optics of the lens design to provide any reading addition.
  • Astigmatism greater than 2.00D. A stable freely moving lens design is needed; high degrees of corneal astigmatism will result in a compromised fit and will disrupt the visual performance. Using single vision lens designs to correct high degrees of astigmatism creates variable fluctuating tear film. Such fluctuations interrupt the back surface optics of the Multifocal; therefore these situations should be avoided.
  • Cannot establish a satisfactory single vision diagnostic fit. If a patient cannot wear or use single vision rigid lenses, they are unlikely to be successful with the Multifocal design. The design has been developed to help you with the presbyopic lens population.
  • Any corneal pathology present, i.e. keratoconus. A diseased cornea will not provide a stable platform, as a result the patient will complain of variable vision or an unreliable reading add.

Quick Fitting Guide

  • Establish the best fit using the Quasar diagnostic set. This is best achieved by starting with a lens with a B.O.Z.R on flattest K
  • Confirm good centration
  • Perform an over-refraction with the best-fit lens
  • Determine the required reading addition
  • Confirm the over-refraction for distance

Then order the lens providing the following information:

  • B.O.Z.R. (from the single vision lens used in the trial)
  • Total Diameter (from the single vision lens used in the trial)
  • B.V.P. (power of the diagnostic lens plus over-refraction)
  • Required reading addition.

Contra Indications

  • Poor centration with the diagnostic lens
  • Astigmatism greater than 2.00D
  • You could not establish a satisfactory single vision diagnostic lens fit
  • Any corneal pathology present, i.e. keratoconus
  • Clear distance vision
  • Clear near vision
  • Easy to fit
  • High success rate
  • True binocular vision
  • Long term patient satisfaction
  • Simulated fitting and ordering software available


DK60, DK90, SGP, SGP2 – Quasar Toric Custom
Radii 7.00 to 9.00mm in 0.05 steps
Max Difference Flat/Steep 0.20mm
Total Diameters 9.50mm to 10.50
B.V. Power Range -10.00 to +12.00D
Add Powers 0.75 to 2.50D (up to 3.50 on certain B.O.Z.R. and distance power combinations)


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.