Class Notes (811,485)
United States (314,604)
Chemistry (481)
CHEM 3B (39)
Lecture 3

CHEM 3B Lecture 3: Eye Care Professionals

3 Pages
Unlock Document


Death, Taxes, and Males get glasses more than females Age 40, need for glasses increases Light Basics Point sources of light diverge when travels a distance (~ 20ft) Refraction Light bends at a surface Bend light to make things more focused Macula Densest part of photoreceptors When looking at someone, the macula directs there What Doc wants to know How long you noticed Acute onset (one day it just came out of focus) vs gradual onset (happening for 2 weeks) How old are you? Whats the margin of error? 2020 > test distance (in feet)letter size 2040 Letter must be twice as big to see Twice as close Myopia development Insufficient monitoring of growth of the eye, grows but doesnt stop b.c signal broke Genetics Near work 88 genetic, 12 environment Genetics of myopia Identical twins vs fraternal twins Identical > same dna Fraternal > born same time, different DNA (same as regular siblings) Higher prevalence in Asian, Caucasian 6 months old > optometrist Can see a lot through eyes Babies first are far sighted. If baby emmetropic, may be nearsighted in future Environment influences Near work Textmessaging, handheld video games, surfing the web Outside time Myopia = intelligence? Suggests its true Nearsighted kids > better readers Final word: orinda study Followed in Orinda, CA Genetics:
More Less

Related notes for CHEM 3B

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.