Frequently Asked Questions

Windsor Knife

What blade sizes are available in the Windsor Knife?
The Windsor Knife range of blade sizes are available in 1.8mm - 3.2mm keratomes & 24 Gauge - 19 Gauge sideport knives. Other knife sizes may be available upon request.
Can we make different sizes of knives?
Yes, we have the capability to manufacture blades to any size. Please contact us to discuss further.


Where is the Windsor Knife manufactured?
The Windsor Knife was designed in the UK and is manufactured in Birmingham, England.
What surgical technique should be used with the Windsor Knife?
The surgical technique that should be used with the Windsor Knife is the two or three plane wound construction technique. The three plane technique is described below.

Architectural approach of three plane wound construction.
The Windsor Knife configuration allows for precise repeatable wound construction in eye surgery.
The first step to making a good incision with the Windsor Knife is to recognise that the blade has a different profile and needs to be used in a slightly different way from conventional knives.
Firstly, after the initial entry into the cornea at a steep angle, the blade has to be held flat against the globe to allow the blade to start the incision in the correct position. The blade is then pushed forward until the end of the triangular bevel is reached. The handle should then be lifted until the tip of the blade is pointing to the centre of the pupil to allow entry into the anterior chamber. Once the anterior chamber has been penetrated, push the blade parallel to the iris. Using this method of incision, the knife will by design create a near square self-sealing wound.
The nature of the wound architecture created by correct use of the Windsor Knife will reduce considerably the need for stromal hydration.
Temporal Approach

1. Stabilise the globe by use of the side port.
2. Allow the point of the blade to penetrate corneal tissue.
3. Position the Windsor Knife flat to the globe.
4. Advance the Windsor Knife to the end of the triangular bevel.
5. Lift the heel until the tip of the Windsor Knife is pointing to the centre of the pupil to enter the anterior chamber.
6. Flatten the Windsor Knife until it is parallel to the iris.
7. Push the knife forward through the cornea past the widest point of the Windsor Knife.

Superior Approach

1. The patient should be asked to look down to their toes.
2. Stabilise the globe by use of the side port.
3. Allow the point of the blade to penetrate corneal tissue.
4. Position the Windsor Knife flat to the globe.
5. Advance the Windsor Knife to the end of the triangular bevel.
6. Lift the heel until the tip of the Windsor Knife is pointing to the centre of the pupil to enter the anterior chamber.
7. Flatten the Windsor Knife until it is parallel to the iris.
8. Push the knife forward through the cornea past the widest point of the Windsor Knife.
What is B.S.T.?
B.S.T. (Blade Support Technology)
The B.S.T. has been designed to support the blade making it more rigid and less flexible when cutting through tissue. Without B.S.T. the flexing of the blade absorbs energy much like the action of a spring. Using B.S.T. effectively reduces energy absorption and transfers more energy to the tip of the blade. The overall effect of the energy transfer to the blade tip allows even pressure ensuring smoother penetration and better wound architecture and construction.


Bimanual I/A

What size of Bimanual handpieces are available?
We have two sizes available; 20 gauge and 21 gauge. Each gauge is available with either open ended or dual sideport irrigation cannula and a choice of polishing or non-polishing tips to the aspiration cannula. We have designed a complimentary Windsor Knife for sideport incisions in both 20g and 21g.


Coaxial I/A

What size of Coaxial I/A are available?
We have four sizes available; 19 gauge, 20 gauge, 21 gauge and 23 gauge. These are available in both 45 degree, 65 degree angled tip and curved with a choice of polishing or non-polishing tip. We have designed a complimentary Windsor Knife for main wound incisions in 2.75mm and 2.85mm for the 20 gauge, 2.2mm for the 21 gauge and 2.0mm -1.8mm for the 23g auge Coaxials.


Phaco handpiece

Can we supply and repair phaco handpieces?
Yes, we supply several makes of compatible phaco handpieces at very competitive prices. We can also offer an excellent repair service for most makes of phaco handpieces.


Photographs

Can I enlarge photographs on the website?
Yes in most cases you can enlarge the photographs and use F5 to refresh. Please remember that photographs and editorial copy may not be used without written permission.


Surgical Videos

Can my surgical video feature on this website?
Yes, surgical videos showing the use of Core Surgical products can be featured on this website. Please contact us for further details.


IOL`s

Do we have Hydrophobic IOL`s?
We have a fantsic range of injectable, foldable hydrophic IOL's availble. Call for information


Balmoral Knife

What is the Balmoral Knife?
The Balmoral range of knives are standard keratome.