Lecture 1. Epidemiology Flashcards
What is the definition of glaucoma?
Ocular tissue damage at least partially related to IOP
What are the 2 major types of glaucoma? and which one is most common?
Open and closed angle. Open angle is most common
Between primary and secondary angle closure, which defines a known cause and which defines an unknown cause?
Primary=unknown, secondary=known (glaucoma secondary to…)
What do you call a pt who has elevated pressure, reduced visual fields and/or glaucomatous damage in their optic nerve but you have only seen them 1 time?
A “glaucoma suspect”. in order to diagnose a pt with glaucoma you must observe progression. Make sure to follow up with pt in 3 months.
Name the 3 types of open angle glaucoma and their usual IOP
1) PAOG (primary open angle) greater than 21 w/ damage/vf loss.
2) OHT (ocular hypertension) gretaer than 21 w/o damage/vf loss.
3) NTG (normal tension glaucoma) less than 21 w/ damage/vf loss
Name the 3 types of closed angle glaucoma
Primary and secondary closed angle glaucoma and congenital glaucoma.
What is the prevalence of glaucoma in Caucasian populations over 40 yrs. old?
2%
*Prevalence of POAG in African Americans/African Caribbeans is _____ times higher than in Caucasians?
4x (4x 2%=8%) **POAG affects African Americans the most
(T/F) Angle closure is more prevalent in women
True
(T/F) POAG is more common in women
False (no obvious correlation in increased incidence in men or women) only in closed angle glaucoma do we see a difference
At what age for caucasians and African Americans do we find an increased risk of glaucoma?
Caucasians=40 yrs. old, African Americans=35 yrs. old, Hispanics=40 and are similar to Caucasians at first but then progress more rapidly than African Americans later on
(T/F) according to the Beaver Dam study, 25% of POAG’s had IOPS of less than 21mmHG?
True (depending on what time of day, possible fluctuations)
What is the prevalence of OHT in Caucasians?
3%
(T/F) Caucasians are more likely to have POAG rather than closed angle?
True. Caucasians have wide angles and large anterior chambers. African Americans also have a lower prevalence of closed angle as well due to wide angles.
(T/F) An elderly Chinese woman has the lowest risk of closed angle glaucoma?
False, chinese people and women have the highest risk and prevalence increases with age.