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LED Blue White Penlight
LED blue and white penlights are widely available, particularly as diagnostic tools for medical professionals, and many feature both colors in the light itself or in the product casing. Key brands include Aokin, OdontoMed2011, and Luxamed
₹500.00
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Description
Plastic
Beads
Nylon
String
Beads
wood
Therapeutic
heavier cords
Product description
- This product is available in a sky blue casing with a white LED light.
- Reviewers on Amazon.in praise its consistent performance for medical use and its included pupil gauge and ruler on the side, useful for quick measurements.
| Topic | Discription |
| Catagory | Vision Therapy |
| Purpose / Target Users | The White–Blue Pen Light is a dual-function light tool used for pupillary reflex testing, anterior segment examination, ocular motility evaluation, and fixation or tracking exercises in vision therapy. The white light is typically used for general illumination and pupillary testing, while the blue light is useful for fluorescein staining (corneal evaluation) and enhancing contrast during specific clinical procedures. Target Users: Optometrists, ophthalmologists, vision therapists, school screening personnel, eye hospitals, and clinics that need a portable, versatile, two-color light source |
| Optotypes / Symbols | Not applicable (no printed symbols). Instead, the focused white or blue LED beam itself functions as a fixation target, enabling clinicians to assess pupil response, ocular alignment, and tracking. |
| Scaling / Spacing | There are no printed scales. However, the controlled, narrow beam of both white and blue LEDs allows examiners to maintain standardized working distances and spacing for tests like NPC, pupil testing, and near fixation tasks. |
| Range of Acuity / Line Sizes | Not applicable for acuity measurement. Instead, the pen light provides a visual stimulus for accommodation, convergence, and fixation at various distances — typically from 5 cm to 40 cm for near vision tasks. |
| Testing Distance | Pupillary Testing: Usually at 15–30 cm from the patient’s eyes to check direct and consensual light reflex. NPC / Convergence Testing: Light is brought from 40 cm toward the patient’s nose to measure near point of convergence. Fixation / Tracking: Light can be moved in different directions at 40 cm or closer for smooth pursuit and saccadic evaluations. Blue Light (Fluorescein): Typically held close to the eye (~15 cm) to evaluate corneal integrity after fluorescein dye application |
| Physical Size & Dimensions | Length: Approximately 13–15 cm (pen-shaped) Diameter: Around 1–1.5 cm Weight: Lightweight (20–30 g), ensuring easy handling during prolonged use. The slim design allows comfortable grip, smooth operation, and pocket storage. |
| Mounting / Display Features | Pocket Clip: Integrated clip allows secure attachment to a coat, shirt, or clipboard. No fixed mounting needed — it is a handheld device, offering flexibility in different clinical or field settings. |
| Included Accessories / Extras | Batteries (AAA or AA), depending on the model, are usually included. Some models come with a spare bulb or LED, and occasionally a soft pouch or storage case for protection. A dual light switch mechanism (white / blue) is built in for quick selection. |
| Durability / Material Qualities | Material: Made from high-quality aluminum or stainless steel, providing excellent strength and resistance to wear, corrosion, and cleaning agents.Finish: Smooth white-blue finish for professional appearance and easy identification of the dual light type. LED Technology: Energy-efficient, non-heating, and long-lasting LEDs designed for frequent clinical use. |
| Usability / Marker of Quality | Simple one-hand operation with a push-button or dual switch. Lightweight and ergonomic for steady hand control during precise testing. Instant switching between white and blue light enhances versatility for multiple procedures.Consistent brightness, focused beam, and durable construction are key quality markers. A high-quality White–Blue Pen Light is distinguished by strong battery life, smooth switch function, and stable light output during clinical use. |
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