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  2. Fluorescein (medical use) - Wikipedia

    en.wikipedia.org/wiki/Fluorescein_(medical_use)

    Fluorescein is a dye which is taken up by damaged cornea such that the area appears green under cobalt blue light. [3] There is also a version that comes premixed with lidocaine. [4] [8] Fluorescein was first made in 1871. [9] It is on the World Health Organization's List of Essential Medicines. [10]

  3. Herpes simplex keratitis - Wikipedia

    en.wikipedia.org/wiki/Herpes_simplex_keratitis

    During eye exam the defect is examined after staining with fluorescein dye. The underlying cornea has minimal inflammation. Patients with epithelial keratitis complain of foreign-body sensation, light sensitivity, redness and blurred vision. Focal or diffuse reduction in corneal sensation develops following recurrent epithelial keratitis.

  4. Corneal abrasion - Wikipedia

    en.wikipedia.org/wiki/Corneal_abrasion

    Although corneal abrasions may be seen with ophthalmoscopes, slit lamp microscopes provide higher magnification which allow for a more thorough evaluation. To aid in viewing, a fluorescein stain that fills in the corneal defect and glows with a cobalt blue-light is generally instilled first. [citation needed]

  5. Fluorescein - Wikipedia

    en.wikipedia.org/wiki/Fluorescein

    Fluorescein can be introduced to a plant's veins through the roots or a cut stem. The dye is able to be taken up into the plant the same way as water and moves from the roots to the top of the plant due to a transpirational pull. [29] The fluorescein that has been taken up into the plant can be visualized under a fluorescent microscope.

  6. Seidel test - Wikipedia

    en.wikipedia.org/wiki/Seidel_test

    The fluorescein is examined with a cobalt blue filter. At this point, the fluorescein appears green in color. Any changes in color or surface of the fluorescence area indicate the presence of corneal leakage. The test is contraindicated in obvious globe rupture, Full-thickness eye laceration, and fluorescein hypersensitivity. [1]

  7. Thygeson's superficial punctate keratopathy - Wikipedia

    en.wikipedia.org/wiki/Thygeson's_superficial...

    On inspection with a slit lamp, tiny lumps can be found on the cornea of the eye. These lumps can be more easily seen after applying fluorescein or rose Bengal dye eye-drops. The lumps appear to be randomly positioned on the cornea and they may appear and disappear over a period of time (with or without treatment). TSPK may affect one or both eyes.

  8. Tear break-up time - Wikipedia

    en.wikipedia.org/wiki/Tear_break-up_time

    Fluorescein 2% [2] is instilled into the lower fornix of patient's eye. Alternatively, impregnated fluorescein strip moistened with preservative (benzalkonium chloride) free saline solution can also be used. [6] The eye is examined under a slit lamp with a low magnification and a broad beam covering the whole cornea. The lamp is switched to a ...

  9. Rose bengal - Wikipedia

    en.wikipedia.org/wiki/Rose_bengal

    This is why rose bengal is often useful as a stain in diagnosing certain medical issues, such as conjunctival and lid disorders. [19] Rose bengal has been used for ocular surface staining to study the efficacy of punctal plugs in the treatment of keratoconjunctivitis sicca. [20] Rose bengal is being researched as an agent in creating nano ...