Hello again people! I hope you are doing fine :)
I was wondering which Filter Tint is best suited for computer use...
I'm thinking Blue-Gray 12% or Rose 12%. What's your opinion?
Thanks
Hello again people! I hope you are doing fine :)
I was wondering which Filter Tint is best suited for computer use...
I'm thinking Blue-Gray 12% or Rose 12%. What's your opinion?
Thanks
Get in contact with a fellow Optiboarder, Ian Jordan. He has done a huge amount of research in this area.
Your compoter screen emitts a bluish light, compensate with a pink which will make it softer.Originally Posted by John Karamouzis
Why not just adjust the color on your computer?
.......................because you just lost the sale of a pair of glasses ! :D
The fact is - there is no best tint empirically - but there will be a best tint for a given person, with a given screen, under a particular lighting condition.
It easier to change the screen. Don't forget to consider changing the ambient light as well - which may include changing angles, position and increasing / decreasing lights, but if this does not work then a filter will be necesary, it's difficult to get 100% right though.
When prescribing filters, it is often best to asess and calculate the best filter for the environment - then modify the screen if necessary. This again has to be done individually for optimum results, empirical techniques are at best "cross fingers and hope for best"
This question needs a two hour lecture !
I've come to only recommend A/R for computer users. The computer screen is literally a light shining at the patient, and is going to reflect off the front and back surface of the lenses. Adding a tint will only darken the lens, open up the pupil to get more light, and by not removing glare, it will actually add glare perceived by the patient. Kind of the same idea as tinting glasses that people will use for nighttime driving. Except there's not much danger of crashing into something at the computer. The computer crashing, maybe.
Upping the resolution on the screen would help for fatigue, too.
It's nice to be important, but it's more important to be nice.
Whilst improving transmission on a lens is usually a good idea, using a MAR coating for some patients can be extremely bad practice if they have a problem with stimulus. An optician should be able to recognise when this is the case - and respond appropriately. Prescribing a "one method" shows a lack of knowledge.
Empirical methods are often inappropriate, and training of all the optical professions should reflect this.
It is about time that the optical professions are given a basic training in tint prescribing and its physical / medical / sporting / cognitive effects - In conferences I train educationalists (teachers / psychologists etc) and non optical professionals to a higher standard than optical professionals - this must be an unacceptable state of affairs.
The idea that optical profesionals can ignore the effects of stimulus - is both stupid and unprofessional. Nobody expects optical professionals to be experts in this area (it is extremely complex), but the public have a right to expect basic training. If the public ever find out how poor the optical professions are in this area - then heaven help us all!
Ian,
Do you offer any online courses, or webinars for access to your expertise regarding tints?
I'm ready ($$$$) to sign up!
Barry
The melanin tint is suggested to cut down on any glare situation and give true color recognition.
It will eliminate all glare and combined with a little base in prism makes an ideal product.
Craig
Craig:
Are we saying it is less fatigueing and stressfull to read without converging? Could one actually stare at a nearly fixed spot longer if this were the case?
Would this be harmfull on ones ability to actually converge over a long period of time.
Please splain bout the base in prism in detail.
And yes, I do understand about loop maginfiers and very small objects viewed at very close ranges.
Chip
Sorry - have to disagree 1000% about a "perfect" tint for "everyone" under "every" situation. That's the most ridiculous thing I've ever heard. A melanin brown tint also does not transmit light evenly when compared against a neutral density filter. Interestingly enough, just about any human with the notable exceptions of those with a fair degree of color deficiency or all out color-blindness, will still be able to determine colors such as the difference between red/green/blue etc. with 99% of tinted lenses. That being said - I do personally tend to prefer my brown lenses (polarized in my case) over my grey when outdoors for just about any activity.
Then there's also the question of tint density, and environment. Ian's got the low-down on tints and such and some of the many ways they can affect our noggins. He'd be a good one to reference for such things.
A/R is a different animal altogether of course...but any lens that more efficiently focuses ray patterns through design (digital etc.) or light transmittance A/R is generally a good thing.
A UK uni has asked me to write a post grad course for optical professionals in prescribing tints and filters. It would take 120 hours - so is unlikely to be practical for those in practice.
Therefore I would suggest a one / two day course to give basic information in professional prescribing of tints
I have not written it as yet - but may do so if there is sufficient demand - comments would be appreciated too.
Therefore suggested syllabus for
a basic understanding of filter prescribing
A refresher in colour and light processing - anatomical, physiological, theoretical areas of light processing (non refractive). Common anomalies. The importance of neural pathways and vision development.
Colour space and its relevance in practice, metamerism, lighting, reflectance, remittance.
Lenses - types of tints and absolute prescribing v empirical prescribing. Additive and subtractive prescribing techniques and how lenses that look identical may have very different properties and the relevance of these.
Physical, medical, cognitive and psychological effects of tints and the visual environment.
Optometric effects, ophthalmological changes, neurological changes due to visual stimulus, cross sensory responses and synesthesia, referred effects, special needs eg autism, dyslexia, DCD (dyspraxia), dyscalculia,
Measuring the effects of tints on the patient. The effects of prescribing the wrong tint. Ethics.
Dorsal and ventral stream effects, magnocellular processing, arousal, anxiety.
Optometric effects on acuity, visual fields, attentional fields (visual scan), accommodation, convergence, stability and Rx.
How to assess and prescribe a filter using the most advanced instrumentation in optometry, medicine and in other areas
Comparisons of using filters with vision therapy - the options available
Ideally it would be a hands on course.
We also welcome people into our specialist practice in Scotland to shadow us. We see around 6 patients a day for specialist filter interventions (our eye examination in this case takes around 2hrs - and we can for instance test non verbal non cooperative children with learning difficulties accurately for filters) Most of work is on neurological / optometric / synesthetic difficulties.
If you wish to come please pm me, I spend a lot of my time in research / lecturing at conferences so there are only limited dates in which we can accept anyone, but we do expect a reasonable level of colour / optometric / optical knowledge prior to attending.
comments?
Ian, have you bounced this idea around the UK at all ? I would be interested to see how theoptom.com lot receive it.
Ian,
IOf you develop an online course for $$$, I'll sign up immediately!
Barry
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