MDF Instruments, LUMiNiX Illuminator Medical Professional Diagnostic Penlight (MDF611-29)

Update after almost two years of use is at the very bottom of my original review which follows:I had come to believe there is no such thing as a perfect penlight. I have owned the expensive W.A. Penlight, the copy cat ADC version, and numerous others. This particular version of the MDF blows all other penlights away. Other MDF penlights I have not been happy with however this latest version they hit a home run.Pros: 1) The light is a warm white which is best for getting true tissue color as the insanely bright LED bulbs that some penlights come with distort colors. Perfect for checking pupils as well, not blinding to patient. 2) Nice weight to it and the outside has a slight "grippy" texture to it. 3) There is a pupil gauge and ruler. 4) Light easily clicks on and stays on until clicked again. 5) Sturdy construction - dropped a couple times on hard flooring and still working. 6) Inexpensive for the quality you receive in this product.Cons: NONE; Best medical penlight I have owned and easily beats the top penlight that ADC sells....AND this beats the Welsch Allen penlight. MDF did their homework on this penlight.Buy this penlight and you will forget all the ones you have used in the past that you have been dissatisfied with for one reason or another.UPDATE: After close to two years of using this penlight I can report that my original review was an accurate one even after long-term almost daily use. This MDF penlight is still working flawlessly in function and looks. All I have done is change the battery a couple times. I can state with confidence even after long-term use that MDF really did their homework on this instrument. Also, still in opinion that this is superior to the W.A. Penlight and its ADC copy cat penlight. Was so happy I have bought 2 more of these penlights so I could stock up on them in case they ever discontinued this amazing penlight.

I trust the brand MDF. I have stethoscopes, blood pressure cuffs, and now a professional medical illuminator aka small pen light for looking in patients eyes, ears, mouth, and throat. This pen light is excellent in every way. It's strong and holds up to dropping because it's solid metal. It's got a high quality on/off button on the top of the pen light. Just one click on and off only. The amber LED light bulb will last forever. It's not too bright for a patients eyes unlike some LED pen lights I've had. The tip is chrome and can easily be wiped off and sanitized in between patients. The tip unscrews with fine threads which is how you change the AAA batteries. In general, batteries can swell up and even leak due to an increase in gases with in the battery. This is why I'm using lithium ion rechargeable batteries. Longer life and less likely to expand and leak like alkaline batteries ie. energizer and duracell. The barrel of the pen light has a white, rubber coating which has not worn off or peeled like other rubber coated items I've had in the past. Every thing including the clip is metal, durable, long lasting, and a bit on the heavy side (82.2 grams with batteries). The barrel has mm pupil sizes and a small ruler both of which are quite useful. There's nothing I would change about this pen light except maybe make a black version since it would better match my outfits.

I use this penlight every day for work as an optometrist. I I like the soft, warm, but bright light that this penlight gives off. It’s a brighter and more consistently illuminating light than the ubiquitous, cheap, ADC-style ‘diagnostic disposable penlights’ and has a clicky push button instead of a hard-to-squeeze pen clip on-switch. I’ve also used penlights that are just way too bright. While that’s great for me to check pupils, I feel bad for the patients who are squinting into the light while I check. The soft, bright, light from this penlight is more comfortable than a harsh blue LED with condenser lens and this is still plenty bright enough to check if PERRL(A).I’ve been using this every day on about 14 patients a day for around six months so far. I still sometimes grab a transilluminator to double-check if I think pupils look a bit suspicious, but it does a good job.The pupil gauge on it is an added bonus. The pupil sizes are accurate and match the pupil sizes on on my other diagnostic near VA card. It’s nice to have this one too for cases when I left my other gauge in another room.I did have some trouble with AAA batteries wiggling around inside this penlight, which for a while made me have to shake the penlight sometimes to get it to shine. I was able to get around this problem though by ripping up a sticky note and taping one side to each AAA battery to add space around the batteries. After bulking up the thickness of the two AAA’s, I didn’t have anymore issues.If you are an optometrist or optometry student looking for a cheap and good penlight, id recommend trying this one out.

Typical pen light. Easy to use and functions as expected. It would have been nice it had come with batteries. I like that it’s white in color to match the tubing of the stethoscope, but it would have been cool for the pull size chart to be rose gold to completely match the stethoscope that it was bundled with.

I can always count on this flashlight to work. I work in the emergency room and need something handy to look at pupils. I don’t like pulling my cell phone out to be used in patient care. I also have an MDF Stay taupe and love that product as well. Excellent quality.

The bulb they use still is too white when compared with the cheap disposable pen lights. It still washes out skin erythema and the pink of the mouth. The beam of light is a nice and uniform, but the color is still not as good and effect as the cheap ones. Otherwise it is built very well. Nice click. Nice shaft texture. The Bulb end cap is covered. The light is strong enough even to help find some veins in a forearm in a dark you ( you just press the light into the arm and it kind of lights up like a makeshift vein finder).