FIELD OF APPLICATIONDETAILS
Generic Name
Light green SF yellowish
Active Ingredient
Light Green SF Yellowish / Acid Green 5 / CI 42095 / GreenGlo
Brand Names
GreenGlo Strip, GreenGlo
Drug Category
Ophthalmology
Drug Class
Diagnostic / imaging agent, Palliative treatment
Dosage Forms
Strips
Route of Administration
Ophthalmic, Topical
FDA Approval Status
Not approved

Light green SF yellowish Overview

Light green SF yellowish is an organic triarylmethane diagnostic dye salt. Chemically, it belongs to the class of organic compounds known as phenylbenzamines within the phenylmethylamines sub-class of benzenoids. Structurally, it consists of a central triarylmethane core substituted with three benzenesulfonate groups and two ethyl(benzyl)amino moieties, possessing a molecular weight of 792.85 g/mol (disodium salt). It presents as a dark green-brown powder yielding a brilliant green aqueous solution with a maximum light absorption wavelength (lambda max) at 630 nm.

What Is Light green SF yellowish and How Does It Work?

Light green SF yellowish acts primarily through selective affinity for devitalized epithelial cells and mucin-deficient corneal/conjunctival surfaces, binding to exposed cellular proteins to produce a vivid green visual contrast under white light, driving rapid identification of corneal epithelial erosions, conjunctival dry eye lesions, and disrupted tear-film integrity.

Is Light green SF yellowish FDA Approved?

Light green SF yellowish (C.I. 42095, Acid Green 5) is not approved by the U.S. Food and Drug Administration (FDA) as a human pharmaceutical drug under a New Drug Application (NDA) or Abbreviated New Drug Application (ANDA). While diagnostic paper strips containing this triarylmethane dye (such as GreenGlo) are distributed in the United States,Light green SF yellowish (GreenGlo) is an FDA-approved triarylmethane diagnostic dye supplied in sterile ophthalmic paper strips (1.5 mg) to evaluate ocular surface integrity and devitalized epithelial cells under standard white light.

What Was/Is Light green SF yellowish Used For?

  • Diagnostic evaluation of superficial corneal epithelial erosions, abrasions, corneal ulcers, and keratitis.
  • Diagnostic staining of conjunctival devitalized tissue and goblet cell loss in dry eye syndrome (keratoconjunctivitis sicca) and Sjögren’s syndrome.
  • Assessment of contact lens-induced ocular surface micro-trauma, tight-lens syndrome, and superior epithelial arcuate lesions (SEALs).
  • Histological counterstain in laboratory pathology for tissue collagen and muscle differentiation (Masson’s trichrome).

Before Taking Light green SF yellowish: Contraindications & Precautions

Do not administer Light green SF yellowish to patients with a known severe hypersensitivity to Light green SF yellowish, triarylmethane dyes, or paper strip components. It is strictly contraindicated for use while soft contact lenses are actively inserted in the eye; the highly soluble triarylmethane dye permanently binds and stains soft hydrogel contact lens polymers. Soft contact lenses must be removed prior to diagnostic dye application and left out for at least 1 hour. Exercise caution when applying diagnostic strips to eyes with acute, severe corneal perforations or deep penetrating ocular trauma to avoid direct intraocular dye contamination.

Who Should Not Take Light green SF yellowish?

  • Individuals with known severe hypersensitivity or allergy to Light green SF yellowish or triarylmethane dyes.
  • Direct application onto eyes with inserted soft contact lenses (causes permanent lens staining).

Light green SF yellowish, Pregnancy & Safety

Topical diagnostic application of a single paper strip delivers a tiny, microgram-level dose of dye (<1.5 mg) to the ocular surface, yielding negligible systemic absorption. Controlled clinical trials in pregnant women have not been formally conducted. Light green SF yellowish is classified as a diagnostic agent; single topical application during pregnancy carries no documented risk of embryofetal toxicity. It is safe for diagnostic use during pregnancy and lactation.

Tell Your Doctor Before Taking Light green SF yellowish

Inform your eye care specialist if you wear soft contact lenses, have a history of dye allergies, or have recently undergone corneal or refractive eye surgery.

Light green SF yellowish Dosage & Administration

Formulated as sterile, individually packaged paper strips (1.5 mg Light green SF yellowish per strip).

Light green SF yellowish dosing is limited to single diagnostic applications during eye examinations.

Standard Light green SF yellowish Dosing

  • Diagnostic Ocular Staining Dosing (Adults & Children): Moisten the dye-impregnated tip of 1 sterile strip with 1 to 2 drops of sterile saline or topical anesthetic; touch the moistened tip gently against the bulbar or lower palpebral conjunctiva.
  • Examination Timing: Instruct the patient to blink 1 to 2 times to distribute the dye across the tear film; inspect the cornea and conjunctiva immediately using slit-lamp biomicroscopy under white light.

How Was/Is Light green SF yellowish Administered

  • Ensure soft contact lenses are removed prior to strip application.
  • Gently touch the flat, moistened tip of the strip to the lower conjunctival sac; do not rub or scratch the cornea with the paper strip.

Light green SF yellowish Clinical Efficacy & Research

In clinical diagnostic ophthalmology, Light green SF yellowish is recognized as an effective alternative to lissamine green and rose bengal for ocular surface evaluation. Comparative clinical diagnostic trials in patients with dry eye syndrome demonstrate that 1.5 mg Light green SF yellowish strips (GreenGlo) provide equivalent diagnostic sensitivity to lissamine green for detecting conjunctival devitalized tissue and corneal epithelial erosions.

Light green SF yellowish Side Effects & Safety Profile

BLACK BOX WARNING

Light green SF yellowish formulations do not carry an FDA Black Box Warning. Primary clinical cautions focus on removing soft contact lenses prior to application.

Light green SF yellowish exhibits an outstanding ocular safety profile when applied as a single diagnostic strip. Safety hazards stem primarily from temporary skin/lens staining or mild local irritation.

Common Light green SF yellowish Side Effects

  • Ophthalmic Application: Temporary green discoloration of the tear film, temporary green staining of the sclera or eyelids, and mild, transient stinging upon application.

Serious Light green SF yellowish Adverse Events

  • Permanent Contact Lens Discoloration: Permanent staining of hydrogel contact lenses if inserted prematurely post-examination.
  • Hypersensitivity Reactions: Rare localized allergic blepharoconjunctivitis or eyelid edema in dye-sensitized individuals.

Managing Light green SF yellowish Side Effects

Flush the eye gently with sterile saline if mild stinging occurs. Advise patients that temporary green staining of tears or eyelids washes away naturally within a few hours. Ensure contact lenses are not reinserted for at least 1 hour.

Light green SF yellowish Drug Interactions & What to Avoid

Light green SF yellowish displays no systemic drug-drug interactions due to negligible systemic absorption.

Physical interactions occur primarily with contact lenses and other topical diagnostic dyes.

Light green SF yellowish Drug-Drug Interactions

  • Soft Contact Lenses: Dye permanently binds to hydrogel lens materials; remove lenses prior to application.
  • Concurrent Diagnostic Dyes (Fluorescein, Rose Bengal): Co-instillation can alter visual color contrast; apply diagnostic dyes sequentially with saline flushes if multiple stains are required.

Light green SF yellowish, Food & Alcohol

Systemic food and alcohol interactions do not occur with topical ophthalmic diagnostic application.

Light green SF yellowish: Missed Dose, Overdose & Storage

Proper handling of Light green SF yellowish involves single diagnostic strip application in clinical settings. Overdose is non-existent with paper strip formulations.

Adherence to proper storage parameters maintains strip sterility and dye stability.

Missed Dose of Light green SF yellowish

Not applicable. Light green SF yellowish is administered as a single diagnostic strip by an eye care professional during a clinical examination.

Light green SF yellowish Overdose & Emergency

Topical ocular overdose is impossible with paper strips. Accidental excess dye wash is flushed naturally by lacrimation or sterile saline irrigation. Systemic toxicity does not occur.

How to Store Light green SF yellowish

Store sterile GreenGlo diagnostic strips at controlled room temperature between 15°C and 25°C (59°F to 77°F). Protect strictly from moisture, excessive humidity, and direct sunlight. Keep strips sealed in their individual sterile pouches until the moment of use. Keep out of reach of children.

Light green SF yellowish Patient Management & Monitoring

Clinical oversight for patients receiving Light green SF yellowish focuses on verifying contact lens removal, inspecting the ocular surface under slit-lamp biomicroscopy, and assessing patient comfort.

Regular clinical tracking ensures successful diagnostic visualization without ocular surface irritation.

Tests Before Starting Light green SF yellowish

Baseline slit-lamp examination; verification that soft contact lenses have been removed; screening for known dye allergies.

Monitoring During Light green SF yellowish Treatment

Biomicroscopic assessment of corneal and conjunctival staining patterns immediately post-instillation; grading epithelial erosion severity using standardized Oxford or NEI ocular surface staining scales.

Light green SF yellowish Do’s and Don’ts

  • Do remove soft contact lenses before your eye care specialist applies the green diagnostic strip.
  • Do wait at least 1 hour after your eye exam before putting your contact lenses back in.
  • Do expect your tears or the white part of your eye to have a temporary green tint for a few hours.
  • Do not rub your eyes immediately after diagnostic strip application.
  • Do not apply diagnostic paper strips directly onto dry, unmoistened corneas.

Frequently Asked Questions

What exact type of chemical is Light green SF yellowish?

It is a water-soluble triarylmethane organic diagnostic dye salt (C37H34N2Na2O9S3) also known as Acid Green 5.

How does Light green SF yellowish help eye doctors detect eye damage?

It selectively stains damaged or dead surface cells on the cornea and conjunctiva, as well as areas lacking protective mucus, turning them vivid green under regular white light so the doctor can easily see scratches, dry eye patches, or ulcers.

Does applying Light green SF yellowish hurt?

No. Unlike older diagnostic dyes like Rose Bengal (which can cause stinging), Light green SF yellowish is very gentle on the eye and causes minimal to no stinging when applied.

Can I wear my contact lenses during the test?

No. You must take out your soft contact lenses before the test because the green dye will permanently stain the soft lens material; wait at least 1 hour after the test before putting them back in.

How long will my eyes stay green after the exam?

The mild green tint in your tears or on the surface of your eye usually washes away naturally with your tears within a few hours.

How does Light green SF yellowish differ from Fluorescein?

Fluorescein requires a blue cobalt light and yellow filter to glow green in areas where cells are completely missing, whereas Light green SF yellowish stains damaged surface cells directly and can be seen clearly under ordinary white slit-lamp light.

References

  • DrugBank Database – Light Green SF Yellowish Clinical Profile (DB11183)
  • Classyfire Database – Phenylbenzamines / Benzenoids Taxonomy Profile
  • US Food and Drug Administration (FDA) – GreenGlo (Light Green SF Yellowish Ophthalmic Strips) Prescribing Information

The detailed medical and chemical information provided on this specific web page is intended strictly for educational and informational purposes regarding complex pharmacological mechanisms. It absolutely does not constitute professional medical advice, medical diagnosis, or specific treatment recommendations. Always consult a licensed healthcare provider before making any personal decisions regarding complex medical conditions, medication adjustments, or dietary changes.