CONTAX - Veterinary - Dioptrix

Designed to protect the cornea and speed healing
DIOPTRIX – 21 rue Léonce Félix Gonzales – 31400 Toulouse – France – info@dioptrix.com – Tél. : +33 534 301 244 – Fax : +33 561 610 995

CAT
COMFORT – PROTECTION - FLEXIBILITY
References Diameter Base curve Recommendations
CONTAX CX1 16.00 mm 9.20 Cats normal – slightly larger
CONTAX CX3 15.50 mm 8.50 Young cats
CONTAX CX4 16.00 mm 8.80 Cats normal – slightly smaller
CONTAX CX5 18.00 mm 9.40 Persian cats – large eyes
DOGS
References Diameter Base curve Recommendations
CONTAX DX1 18.00 mm 9.60 Medium-sized dogs and smaller; most dog
breeds such as: collies, huskies, corgis,
some boxers
CONTAX DX2 18.00 mm 9.80 Medium-sized dogs and bigger; most dog
breeds such as: labradors, retrievers,
boxers
CONTAX DX3 20.00 mm 10.40 Dogs – large eyes; some bulldogs; boxers
CONTAX DX4 15.50 mm 8.50 Young dogs
EQUINE
References Diameter Base curve Recommendations
CONTAX HX1 34.00 mm 18.00 Horses, normal eye size
CONTAX HX2 32.00 mm 17.00 Small horses, ponies
DIOPTRIX – 21 rue Léonce Félix Gonzales – 31400 Toulouse – France – info@dioptrix.com – Tél. : +33 534 301 244 – Fax : +33 561 610 995

Note:
CONTAX bandage lens is used as an aid in corneal healing by acting as a protective shield on the cornea permitting corneal repair. It is comfortable
for the patient and prevents contact between the corneal surface and the eyelid margin. The lens acts as a physical barrier allowing the natural
healing process of the cornea to occur beneath it.
Description:
Hydrophilic contact lens (Filcon 4A) immersed in 0.9% sodium chloride solution.
Water content : 74%.
DK 37 (oxygen): determines the oxygen permeability and drug delivery capability of the polymer. The higher the number, the
better the therapeutic aspect attributable to the lens. CONTAX lens provides the highest DK of the market.
Indications:
Corneal epithelium healing process
Vesicular keratitis
Corneal oedema and bullous keratopathy
Chronic/recurrent corneal erosions
After surgical debridement of loose epithelium
Superficial ulceration in the absence of active infection
Laceration or perforation where defect is small
Cases with adnexal problems (e.g. : distichiasis,
entropion, ectopic cilia)
How to choose the right size:
Use the plastic gauge CONTAX.
Lens diameter: should span the limbus (few millimetres), optimising the tear film beneath the lens.
CONTAX base curve: slightly flatter than the corneal curvature. A base curve too flat or too steep will lead to poor retention.
How to apply CONTAX:
1. Scoop the CONTAX lens from the bottle using a standard sterile bacteriological swab.
2. Handle the lens with soft plastic forceps.
3. Flushing the corneal surface with sterile normal saline may aid insertion.
4. Use topical local anaesthetic drops.
5. Before the installation, verify the direction of the logo drawn on the lens. The leg of X has to overtake of the triangle
on the left-hand side, and must appear in this direction once put onto the cornea.
6. Slide the CONTAX lens under one lid and, whilst holding the lens in place on the cornea with cotton tipped applicator, lift the
other lid over the free edge of the lens. Lens should preferably be sited underneath the third eyelid.
Check lens insertion:
The correctly fitted lens should not wrinkle, and should slide easily over the cornea.
Excessively large air bubbles beneath the lens Lens is too large, may not be well retained.
Some air bubbles beneath the lens Good tear film lubrication will be achieved.
Eye treatment with CONTAX:
Aqueous topical ophthalmic solutions and liquid tear solutions may be used concurrently.
Oil based or soft paraffin based ointments should be avoided.
How to remove the bandage lens:
Digital pressure on the outside of the lower lid (medial & lateral) will cause the lens to pop out over the upper lid margin.
Cases of removal:
Cases of Keratoconjunctivitis sicca or where active infection is present.
Remove the lens if inflammation develops or worsens; animals with atopy may be predisposed to allergic reaction.
Caution:
For long term applications, remove and clean the lens every 2-3 weeks in order to avoid excessive build-up of deposits.
Cleaning/disinfection can be performed using proprietary soft contact lens solutions (rub the lens surface between the fingers).
The lens should be rinsed thoroughly in sterile normal saline before re-insertion.
To avoid any risk of cross-infection, it is not advisable use a lens on more than one patient.
DIOPTRIX – 21 rue Léonce Félix Gonzales – 31400 Toulouse – France – info@dioptrix.com – Tél. : +33 534 301 244 – Fax : +33 561 610 995