Hydrocyl Brown Toric – Cantor Barnard
Hydrocyl Brown Toric by Cantor Barnard is a custom soft medical Single Vision Toric contact lens designed to correct Astigmatism associated with Myopia or Hyperopia.
The lens is manufactured using Lathe-Cut Technology according to the prescription and measurements of each eye and offers a wide range of:
- Sphere powers
- Cylinder powers
- Axis values
- Base Curves
- Diameters
Delivery Time
The lenses are supplied within a maximum period of:
30 to 60 days
from the date the order is confirmed.
Hydrocyl Toric Design
Hydrocyl uses:
Dynamic Stabilisation using Differential Thinning
to help maintain the correct lens orientation and corrective axis during blinking and eye movement.
The lens also features:
- Back Surface Toric
- Spherical Blended Front Surface with Dynamic Stabilisation
- Prism-Free Ultra-Thin Optic Zone
- Inferior Lid Interaction
- Thin Tapered Uniform Edge Profile
- Lathe-Cut Manufacturing
The lenses are manufactured using:
Computer-Controlled Lathes
to support high precision and reproducibility of customized prescriptions.
Brown Pastel Tint
Hydrocyl is also available with a range of:
Reactive Dye Tints
including:
Pastel Tints
The current Cantor Barnard booklet lists the following shades within:
Basic Pastel Tint
- Brown 1
- Brown 2
- Brown 3
- Brown 4
- Brown 5
- Brown 6
- Brown 7
- Brown 8
These tints may be used to enhance or alter the appearance of the eye while maintaining optical correction.
Cantor Barnard notes that Pastel Tints generally work best on lighter eyes and may allow some of the natural iris color to remain visible.
Therefore, the final appearance may vary between users.
Recommended Material for Brown Toric Pastel
According to the current Cantor Barnard booklet, all:
Pastel Tints
are manufactured in:
Contaflex 67%
Therefore, for a Brown Toric Pastel version, the most appropriate material to list on the product page is:
Contaflex 67 / Filcon 2
with:
Final material availability and parameter combinations remain subject to laboratory confirmation and the prescription.
Technical Specifications
Specification | Value |
|---|
Lens Type | Custom Soft Toric |
Vision Type | Single Vision |
Base Curve | 6.60–10.40 mm |
Base Curve Steps | 0.10 mm |
Diameter | 11.00–20.00 mm |
Diameter Steps | 0.50 mm |
SiH Maximum Diameter | 18.00 mm |
Sphere Power | -30.00D to +30.00D |
Sphere Steps | 0.25D |
Higher Sphere Powers | May be available on request |
Cylinder | -0.75 to -6.00 DC |
Cylinder Steps | 0.25D |
Axis | 1°–180° |
Axis Steps | 1° |
Centre Thickness | 0.12 mm at 14.50 / -3.00D |
Manufacturing | Lathe-Cut |
Wear | Daily Wear |
Maximum Modality | 12 Months |
Replacement | According to eye care professional recommendation |
Important Parameter Note
Not every combination of:
Base Curve × Diameter × Material
can necessarily be manufactured.
Cantor Barnard states that some fitting parameters are restricted depending on the selected material.
Toric Orientation Marks
Toric orientation marks are located on the lower section of the lens:
15° apart
The:
Central Line should be at 6 o’clock
when the lens is correctly oriented during fitting assessment.
This information is mainly intended for eye care professionals rather than as a customer-selectable option.
Contaflex 67 Material
For the Brown Pastel Toric version, the suggested material is:
Contaflex 67
Property | Value |
|---|
Material | Contaflex |
USAN / Material Name | Filcon 2 |
Water Content | 67% |
Dk | 37 |
Lens Type | Hydrogel Soft Lens |
Tint Compatibility | Pastel Tint |
Brown Tint | Yes |
Toric Design | Via Hydrocyl |
Wear | Daily Wear |
Recommended product specification:
Material: Contaflex 67% – Filcon 2 – Dk 37
Other Hydrocyl Materials
The Hydrocyl family is also available in several material groups:
Version | Material | Water Content | Dk |
|---|
Hydrocyl 38 | Contaflex / Filcon 1 | 38% | 8 |
Hydrocyl GMA | GM Advance / Acofilcon A | 58% | 25 |
Hydrocyl 67 | Contaflex / Filcon 2 | 67% | 37 |
Hydrocyl 77 | Contaflex / Filcon 2 | 77% | 46 |
Hydrocyl SiH | Definitive / Safrofilcon 5B | 65% | 62 |
However, Pastel Brown should not automatically be assumed to be available in all these materials.
The current booklet associates Pastel Tints with:
Contaflex 67%
Pastel Brown vs Opaque Brown
This distinction is important when configuring product options.
Basic Pastel Brown
Allows some of the natural iris color to remain visible and is generally used to:
- Enhance eye color
- Modify eye color while maintaining a softer appearance
Opaque Pastel Tint
Provides greater coverage of the natural iris color.
Cantor Barnard states that Opaque tinting is available in:
67% material only
Therefore, if the supplier order simply states:
BROWN TORIC
it should not automatically be classified as:
Opaque Brown
The safer interpretation is:
Brown Pastel Toric
unless Opaque is explicitly stated in the manufacturing order.
Do Not Confuse Brown with Thames Brown
Cantor Barnard also offers:
Thames Brown 1–5
This is different from:
Brown 1–8
Thames Brown is more closely associated with light-filtering applications and conditions such as:
If the supplier order simply states:
Brown
the closer interpretation is:
Basic Brown Pastel Tint
rather than Thames Brown.
Vision Type
Hydrocyl Brown Toric is:
Single Vision Toric
It is not:
Multifocal
The prescription uses:
Sphere + Cylinder + Axis
to provide single-vision correction of astigmatism.
Cantor Barnard provides separate Multifocal and Presbyopia designs, such as the:
PV Series
Suitable Applications
Hydrocyl Brown Toric may be suitable, following professional assessment, for:
Astigmatism
Astigmatism
Myopia with Astigmatism
Myopia with Astigmatism
Hyperopia with Astigmatism
Hyperopia with Astigmatism
Higher Astigmatic Prescriptions
For prescriptions that may not be readily available in standard stock lenses.
Custom Base Curve Requirements
For users who require a customized:
Base Curve
Custom Diameter Requirements
For users who require a customized:
Diameter
Medical Correction with Brown Tint
For users requiring refractive correction together with a:
Brown Tint
Eye Color Enhancement
May be used to enhance or alter the appearance of the eye while maintaining astigmatism correction.
Key Features
- Medical soft Toric contact lens
- Single Vision
- Sphere + Cylinder + Axis correction
- Cylinder up to -6.00D
- Full Axis range from 1° to 180°
- Dynamic Stabilisation
- Back Surface Toric
- Prism-Free Ultra-Thin Optic Zone
- Thin tapered edge
- Custom Lathe-Cut manufacturing
- Wide Base Curve range
- Wide Diameter range
- Pastel Brown Tint
- Multiple Brown shades
- Sphere correction up to ±30.00D
- Daily Wear
- Manufactured in the United Kingdom
Fitting Procedure
The official Hydro & Zero 6 Range fitting guide includes Hydrocyl.
Before fitting, Cantor Barnard recommends:
- Full Refraction
- Eye Examination
- Keratometry
- HVID measurement
- Initial Diameter selection approximately 2–3 mm larger than HVID
- Base Curve selection according to K readings
- BVD adjustment of spectacle power when required
- Laboratory consultation for Toric conversion or unusual prescriptions when necessary
Settling Time
After lens insertion:
Allow approximately 30 minutes
before carrying out the final fitting assessment.
Then evaluate:
- Comfort
- Centration
- Limbal Coverage
- Edge behavior
- Movement with Blink
- Push-Up Test
- Toric Orientation
- Over-Refraction
Good Fit
A good fit should show:
- Good comfort
- Good centration
- Full limbal coverage
- Stable edge
- Appropriate movement with blinking
- Easy movement during the Push-Up Test
- Good return to the central position
Steep Fit
A steep fit may show:
- Good initial comfort
- Very little or no movement
- Difficulty moving the lens during the Push-Up Test
- Slow return to the central position
- Conjunctival indentation
- Blanching
The eye care professional may need to consider:
- A flatter Base Curve
- Diameter adjustment
Flat Fit
A flat fit may show:
- Discomfort
- Poor centration
- Incomplete limbal coverage
- Excessive movement
- Edge stand-off
- Fluting
- Poor return to the center after the Push-Up Test
Wearing Schedule
Daily Wear
The eye care professional determines the actual number of wearing hours and the replacement schedule.
The current Hydrocyl booklet states a:
12 Months Maximum
modality, while the actual replacement interval should be determined according to professional assessment.
Lens Care
Cantor Barnard recommends the following for reusable soft contact lenses:
- Wash and dry hands thoroughly before handling
- Clean and disinfect the lens daily using an appropriate soft contact lens solution
- Do not use water on the lens
- Do not use saliva on the lens
- Do not continue wearing the lens if vision becomes blurred
- Do not continue wearing the lens if the eye becomes painful or red
- Do not sleep in the lenses unless specifically permitted by the eye care professional
- Do not swim while wearing the lenses
- Do not wear the lenses during water sports
- Do not shower while wearing the lenses
- Do not use hot tubs while wearing the lenses
- Do not share contact lenses with another person
Important Warnings
Hydrocyl Brown Toric is a custom medical Toric contact lens manufactured according to the prescription and measurements of each eye. Sphere, Cylinder, Axis, fitting parameters, and tint shade should be determined by an eye care professional.
The final appearance of the Brown Tint may vary depending on:
- Natural iris color
- Selected Brown shade
- Lighting conditions
Do not wear the lens while sleeping or swimming.
Stop wearing the lens and consult an eye care professional if you experience:
- Eye pain
- Redness
- Unusual discomfort
- Changes in vision
McGuire lenses
Show more
