Penlight for Pupillary Reflex

[vhteacher]

Hello,

I am a Teacher of the Visually Impaired and often use a penlight to evaluate students' vision. I use it for testing pupillary reflex, tracking, and field. I was looking for a penlight that would serve this purpose. I purchased a Streamlight Stylus 65018. It's a 10 lumen LED light that puts out a white light. I'm a little concerned that this light may be too bright to shine in the eyes. Is this penlight appropriate for this use? Any suggestions on an appropriate penlight?

Thanks for your help.

 

[Dances with Flashlight]

:welcome:

Peak Eiger Penlights, in HAIII, SS or Brass, can be ordered at any power level desired. Call Bob at RMSK or Curt at Peak. They can answer specific questions.

http://www.candlepowerforums.com/vb/showthread.php?t=244743

Here's another thread on this topic:

http://www.candlepowerforums.com/vb/showthread.php?t=255369

 

[Monocrom]

Ten lumens is going to be far too bright to shine directly into a person's eye.

Lumens Factory makes a decent penlight that could be used for that purpose. But it's an inca. instead of LED.

 

[yowzer]

Medical supply places sell penlights intended for this. Lately I've been using a Quark or Zebralight SC in moonlight mode, though.

 

[prof student]

I just read an article somewhere (can't recall right now) about being carefull about shinning LED lights into the eye b/c of the laser & radiation it emits (not because of how bright it was). Now, I dunno how long you have to look at it to cause any kind of damage, but what stuck out was they they actually printed that.

Plus, this was discussed a little bit ago w/some medical professionals chiming in, that the incandescent lights are best for this type of job.

As yowzer said medical supply shops sell penlight for this purpose. There are a slew of them on Amazon. I just looked because a table of another waiter "forgot" to give me my penlight back & left with it, grr. Anywho, if you are worried about battery life, Costco has the Eneloops with 8AA'a and 4AAA's now. So, you can have 2 in the light & 2 back up batteries. Then just recharge them whenever.

Just my $.02.

 

[OfficerCamp]

Liteflux has a great low mode, it's somewhere in the ballpark of .5 lumens, and it can ramp up to any level of brightness (max 100ish). The size is clutch also, it's very slender and is only a little bigger than a AA battery (takes a AAA batt). Quarks/Jetbeams have a great low mode also.

EDIT: I don't think LEDs emit "lasers", although I'm looking for one to attach to my shark's head.

 

[lovenhim]

Hello and welcome to the forum. I was born leagally blind and have been this way all my life. I have optic atrophy and there is nothing man can do about it. Glasses do not help and I use 10X prism reading glasses for reading.
I know that this is not a pen light like you asked, however it is in-expensive and relieable, how about the Maglite Single AAA 1 lumen flashlight? You can get it anywhere like Wally"s World for example and it is not too bright. Also so you do not have to invest in battery after battery you may also want to try rechargeable batteries for it, but this would depend on how much you use the light. My wife owns one so I can asure you that it is not very bright.

 

[Chrontius]

The solitaire is quoted at 2 lumens by Mag. You can reduce peak brightness slightly by feeding it Ni-MH rechargeables, or increase it by using Ni-Zn or lithium (which may be hard on the bulb, up to or including blowing it immediately!)