epidemiology Flashcards
A branch of medical science that deals with the incidence, distribution, and control of disease in a population.
epidemiology
! The number of instances of a given disease or other condition in a given population at a designated time.
prevalence
Ocular tissue damage at least partially
related to intraocular pressure
glaucoma
3 types of open angle glaucoma
POAG
NTG
OCULAR HYPERTENSION
2 types of closed angle glaucoma
primary angle closure
secondary angle closure
Prevalence of POAG is Caucasians over 40 years of age 2% and in African American and African Caribbeans is “______ times” that.
4
prevalence of glaucoma with age
increase age, increase prevalence
prevalence among men and women
unclear
prevalence of oht in whites
chinese population angle closure glaucoma is ____ times more common than poag
3
The number of instances of illness commencing, or persons falling ill, during a given period in a specified population.
incidence
incidence trend with glaucoma and age
increase age, increase incidence
Aspect of personal behavior or life style, an environment exposure or an inborn or inherited characteristic which on the basis of epidemiological evidence is known to be associated to health conditions important to prevent.
risk factor
definite risk factor for glaucoma
age
Higher prevalence of POAG among ______ and onset of disease is at a younger age.
blacks
name 5 ocular risk factors
! Intraocular pressure ! Optic nerve head
! Myopia
! Hypermetropia
! Central corneal thickness?
major risk factor for glaucoma
intraocular pressure
prevalence increase with increase in wat?
iop
vf loss slows down with decrease in what?
iop
Even if both eyes have IOP lower than 21. The eye with greater IOP will lose
field quicker. (T/F)
true
slide 24
slide 24
whats an important marker of presence and advancement of glaucoma
optic nerve head
Associated with an increase in risk of POAG for a long time in hospital based population.
! However hospital based studies are not ideal
myopia
High degree of what is associated with acute types?
hypermetropia
ocular perfusion equation
Ocular Perfusion pressure= Blood pressure- IOP
! Sibling with glaucoma odds ratio _____!
Parents with glaucoma odds ratio ____ !
Children with glaucoma odds ratio _____
! Sibling with glaucoma odds ratio 3.69
! Parents with glaucoma odds ratio 2.67
! Children with glaucoma odds ratio 1.12
Zipcodeeffect!
! Socio economic factors-Income, education, socio-economic status will have an effect.
Major cause of irreversible blindness
glaucoma
Rate of blindness is greater in African
origin ______ times more than Caucasians.
Rate of blindness is greater in African
origin 6-8 times more than Caucasians.
