Visi Blue(Trypan Blue)

Therapeutic Group: Ophthalmic

Presentation

Visi Blue Ophthalmic solution: Each vial contains 1 ml solution of Trypan Blue 0.6 mg

Description

Visi Blue 0.06% is a solution of Trypan Blue. It is a selective tissue staining agent (dye) which stains anterior lens capsule of the human crystalline lens. The dye does not penetrate the capsule, permitting visualization of the anterior capsule in contrast to the non-stained lens cortex and inner lens material.

Indications

Trypan Blue is indicated for use as an aid in ophthalmic surgery by staining the anterior capsule of the lens.

Dosage & Administration

The first step to administer Trypan Blue is to inject an air bubble into the anterior chamber using a 26 gauge needle. It prevents dilution of dye by the aqueous humor. Then Trypan Blue is injected into the anterior lens capsule using a tuberculin syringe. Sufficient staining is achieved as soon as the dye has contracted the capsule. If some area is left unstained, inject one more drop till it gets stained.

Side Effects

- Discoloration of high water content hydrogen intraocular lenses
- Inadvertent staining of the posterior lens capsule and vitreous face. - It is generally self limited, lasting up to one week.

Precautions

It is recommended that after injection all excess Trypan Blue should be immediately removed from the eye by thorough irrigation of the anterior chamber.

Use in Pregnancy & Lactation

Pregnancy and Lactation:
Pregnancy Category C. There are no adequate and well-controlled studies in pregnant women. Trypan Blue should be given to a pregnant woman only if the potential benefit justifies the potential risk to the fetus.

Pediatric use:
The safety and effectiveness of Trypan Blue have been established in pediatric patients. Use of Trypan Blue is supported by evidence from an adequate and well controlled study in pediatric patients.

Geriatric use:
No overall differences in safety and effectiveness have been observed between elderly and younger patients.
It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Trypan Blue is administered to a nursing woman.