McKesson Cobalt Blue Penlight - 7" Diagnostic Examination Light with Fluorescein Compatibility

Professional Cobalt Blue Diagnostic Penlight for Clinical Examinations

The McKesson Cobalt Blue Examination Penlight delivers specialized diagnostic illumination essential for ophthalmologic examinations, corneal assessments, and fluorescein dye evaluations in clinical, emergency, and optometric settings. This professional-grade diagnostic instrument combines the portability and convenience of a traditional penlight with the specialized cobalt blue wavelength required for detecting corneal abrasions, foreign bodies, and ocular surface irregularities when used in conjunction with fluorescein sodium ophthalmic strips.

Specialized Cobalt Blue Light Technology

Unlike standard white penlights, this diagnostic tool features a cobalt blue filter that emits light at the precise wavelength (approximately 400-500 nanometers) necessary to excite fluorescein dye molecules. When fluorescein is applied to the eye and illuminated with cobalt blue light, damaged or compromised corneal epithelium fluoresces bright yellow-green, making even microscopic abrasions, ulcerations, or foreign body tracks immediately visible to the examining clinician. This critical diagnostic capability enables rapid, accurate assessment of corneal integrity in emergency departments, urgent care facilities, ophthalmology practices, and optometry clinics.

Key Professional Features:

• Cobalt Blue Wavelength Illumination: Specialized blue light filter optimized for use with fluorescein sodium dye, enabling visualization of corneal defects, abrasions, ulcers, and epithelial disruptions that would be invisible under standard white light examination
• Bright, Focused Beam: High-intensity illumination provides clear, concentrated light output for detailed examination of ocular structures, pupillary responses, and anterior segment anatomy in various lighting conditions
• Portable Diagnostic Tool: Compact 7-inch penlight design fits easily in lab coat pockets, medical bags, and emergency kits, ensuring this essential diagnostic instrument is always accessible when needed for patient assessment
• Professional White Housing: Clean, clinical white exterior maintains a professional appearance appropriate for patient-facing clinical environments while providing easy visibility in medical bags and storage areas
• Reliable AA Battery Power: Operates on two standard AA alkaline batteries (widely available and easy to replace), ensuring consistent performance without the need for specialized battery types or charging equipment
• Reusable Construction: Durable design built for repeated clinical use across multiple patient examinations, providing long-term value and reliability in high-volume healthcare settings
• Latex-Free Materials: Not made with natural rubber latex, ensuring safe use in latex-sensitive environments and eliminating allergic reaction concerns for both patients and healthcare providers
• Convenient Pocket Clip: Integrated clip secures the penlight to lab coats, scrubs, or pocket edges, preventing loss and keeping this essential diagnostic tool readily accessible during patient rounds and examinations
• Ergonomic Design: Comfortable pen-style grip allows for precise control during detailed examinations, reducing hand fatigue during extended use or multiple consecutive patient assessments

Essential Clinical Applications

This cobalt blue penlight is indispensable for emergency medicine physicians evaluating eye injuries, optometrists conducting comprehensive eye examinations, ophthalmologists assessing corneal pathology, and urgent care providers managing ocular complaints. The specialized blue light enables rapid detection of corneal foreign bodies following workplace injuries, identification of contact lens-related complications, assessment of chemical exposure damage, and evaluation of infectious keratitis or herpetic eye disease.

Fluorescein Dye Compatibility

When used in conjunction with fluorescein sodium ophthalmic strips or solution, this penlight transforms invisible corneal damage into clearly visible fluorescent patterns. The cobalt blue wavelength causes fluorescein molecules trapped in areas of epithelial disruption to emit bright yellow-green fluorescence, creating stark contrast against the normal dark corneal surface. This diagnostic technique is considered the gold standard for detecting corneal abrasions and is essential for proper evaluation and documentation of eye injuries.

Ideal For:

Emergency departments, urgent care centers, ophthalmology practices, optometry clinics, occupational health facilities, primary care offices, pediatric practices, and any healthcare setting where eye examinations and corneal assessments are performed. Essential equipment for healthcare providers who evaluate eye injuries, foreign body sensations, red eye complaints, or contact lens complications.

Professional Quality from a Trusted Healthcare Leader

Manufactured by McKesson, a recognized leader in medical diagnostic equipment and healthcare solutions with decades of experience serving healthcare professionals worldwide. This cobalt blue penlight reflects McKesson's commitment to providing reliable, specialized diagnostic tools that support accurate clinical assessment and quality patient care.

Batteries Required: Operates on two AA alkaline batteries (sold separately). For optimal performance and consistent illumination, replace batteries regularly based on usage frequency.