How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dr. Rick Your Own Question

Dr. Rick
Dr. Rick, Board Certified MD
Category: Eye
Satisfied Customers: 7746
Experience:  Ophthalmology since 1994 with Retina sub-specialty interest
Type Your Eye Question Here...
Dr. Rick is online now
A new question is answered every 9 seconds

I am designing an iPhone app that will display the time of

Customer Question

I am designing an iPhone app that will display the time of day in the largest, most-legible font possible given the size of the phone screen. We've zeroed in on two fonts to choose from, but want to get an expert opinion on our font legibility, so that we can make a substantive claim about our app, e.g., "visible from XX feet away by someone with 2/XX vision." or "designed in consultation with a certified opthamologist ..."

Links to the two designs:
1) mottstudios.com/samples/BLACK_crystal.jpg
2) mottstudios.com/samples/BLACK_liberation.jpg

To phrase this as a series of questions, I'm asking:
1. Can you give an opinion on which of these designs would be considered more legible?
2. Is there some existing data or research officially sanctioned by the AOA (or similar agency) that we can use to back up our claims or guide us in our design?
3. Is there a standard method to calculate legibility for someone with 20/N eyesight standing XX feet away?

Hope this makes sense!
Submitted: 3 years ago.
Category: Eye
Expert:  Dr. Rick replied 3 years ago.

Dr. Rick :

Hi. I'm online and happy to answer your question today.

Dr. Rick :

Are you available to chat?

Customer :

Yes I am. Thanks.

Customer :

Does my question (questions, really) make sense?

Dr. Rick :

I am happy to give you an "eye expert" opinion on which font is most legible. As far as the AAO etc having tested different fonts for legibility the best place to obtain an answer to that question would be The Society for the Blind, The lighthouse, and possibly the Macular degeneration society

Dr. Rick :

Yes

Dr. Rick :

There is a standard eye chart used to clinical studies that has a given contrast per unit volume at a given lux of illumination. Is that something like you were wondering about?

Customer :

Maybe ... we'd love to be able to say "visible in daylight at 12 feet (across the room) by someone with 20/xx vision." or "visible on your nightstand by someone with 20/xx vision". Granted, perhaps "20/xx" isn't approrpate.

Dr. Rick :

Well, actually, that isn't such a bad measure of how easy it is to see your font. The best way to test this would be, of course, to display it on an iphone in a constant room illumination and then get a few people with known degrees of vision to look at the screen at a given (or various) distances and see how they do reading your font. The easiest way to do this would be to pair up with an ophthalmologist.

Dr. Rick :

You could either find patients with various uncorrected vision of 20/20, 20/40 20/60 etc and record how they see your font. Or you could "fake" the poor vision by blurring a normal persons vision with plus or minus lenses in the phoropter (the thing the eye doc uses to test you for glasses: "which is better, one or two?" etc) to a given vision such as 20/40 and then record their response

Customer :

OK, that makes a lot of sense. Thank you. And thanks for the names of the other societies. What would your opinion of the two options be?

Dr. Rick :

Of the fonts you listed?

Customer :

I posted two images. Here's one: http://mottstudios.com/samples/BLACK_liberation.jpg

Customer :

And here's the second: http://mottstudios.com/samples/BLACK_crystal.jpg

Dr. Rick :

They didn't post but let me go to the two links. Be right back.

Dr. Rick :

I like the first font with the thicker white letters. They both have excellent contrast but from a further distance I believe the first one will be easier to read. Does that help?

Customer :

That helps. Thank you very much for your time today.

Dr. Rick :

my pleasure.

Dr. Rick, Board Certified MD
Category: Eye
Satisfied Customers: 7746
Experience: Ophthalmology since 1994 with Retina sub-specialty interest
Dr. Rick and other Eye Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
< Last | Next >
  • I feel so much better today, and upon further investigation believe that there is a chance that the responses I got saved me from a serious, even life threatening situation. I am very grateful to the experts who answered me. Susan O. USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Dr. Dan B.

    Board Certified Ophthalmologist

    Satisfied Customers:

    2903
    Eye surgeon experienced in cataracts, glaucoma, retina & neuro-ophthalmology
< Last | Next >
  • http://ww2.justanswer.com/uploads/DoctorDanB/2010-6-7_6228_just_answer_profile_picture_60_pixels.jpg Dr. Dan B.'s Avatar

    Dr. Dan B.

    Board Certified Ophthalmologist

    Satisfied Customers:

    2903
    Eye surgeon experienced in cataracts, glaucoma, retina & neuro-ophthalmology
  • http://ww2.justanswer.com/uploads/anupamadesai/2010-04-13_122313_Dr._A.S.Desai_new_photo.jpg Dr. A.S. Desai's Avatar

    Dr. A.S. Desai

    Ophthalmologist

    Satisfied Customers:

    1903
    MS Ophthalmology with 11 years of surgical expereince
  • http://ww2.justanswer.com/uploads/gsokoye/2009-10-28_181751_Dr._Stan.JPG Dr. Stan's Avatar

    Dr. Stan

    Ophthalmologist

    Satisfied Customers:

    895
    Johns Hopkins Fellowship Trained, Certified and Licensed Medical Physician and Surgeon
  • http://ww2.justanswer.com/uploads/eyemd/2009-04-07_180315_pic.jpg Dr. Stevens's Avatar

    Dr. Stevens

    Ophthalmologist

    Satisfied Customers:

    629
    Board Certified Ophthalmologist
  • http://ww2.justanswer.com/uploads/CO/CorneaDoc/2012-2-18_0390_photo6.64x64.jpg Dr. Susan's Avatar

    Dr. Susan

    Ophthalmologist

    Satisfied Customers:

    217
    Board Certified & Fellowship trained eye surgeon.
  • http://ww2.justanswer.com/uploads/neuph94/2009-10-11_164729_gif_pic.GIF Dr. JP's Avatar

    Dr. JP

    Ophthalmology, Oculoplastic Surgery

    Satisfied Customers:

    28
    Harvard Medical School, Massachussetts Eye and Ear
  • http://ww2.justanswer.com/uploads/JA/JACUSTOMERjcufyksv/2012-3-13_44825_crop3.64x64.jpg Dr-Trace's Avatar

    Dr-Trace

    Board Certified Ophthalmologist

    Satisfied Customers:

    26
    Board Certified in General Ophthalmology