Generic Vs Brand Name Flashcards
Difference between brand name and generic drugs
Brand name has tight manufacturing control, generic is not so tight manufacturing control
Why will generic possibly not lowering IOP as well as brand name
- ingredients may react with the plastics etc
- ingredients are more prone to degradation
- other reasons that are unlikely: drop size variability, differnt preservatives
OHT definition
- elevated IOP (>21mmHg) without any identifiable damage
- 24mmHg is used as criteria in OHTN
- consistently elevates pressure
- VF normal-white on white perimetry
- ONH normal
How to use CCT data in glaucoma managment
- error in IOP measurements
- OHTN patients: thinner cornea at greater risk of developing glaucoma
STAR calculator
- OHTS and EGPS data
- intended for use only in untreated OHT patients
- Age (30-80)
- IOP (20-32)
- CCT (475-650)
- PSD 0.50 to 3.00 dB
- CD ratio
Gives us a probability of conversion in g5 years
- <5% observe
-5-15% consider treatemtn
>15% treat
Efficacy of topical hypotension medications in delaying or preventing onset of glaucoma in OHTN
- mean IOP was 22.5%
- treatment definitely shows reduction of risk of glaucoma in OHTN
- cataract formation was greater in the treated group
OHTN factors that are important
- age
- larger CD ratio
- greater PSD
- higher IOP
- strongest association was CCT
- disc hemorrhage-increases risk of POAG development
Types of glaucoma suspects
Suspects due to elevated IOP
Suspects due to nerve
Suspect due to VF
Elevated IOP
Pay attention to type of measurement
-obese patient- valsalva maneuver
Is IOP consistently high
Diurnal measures at different hours Use of steroids -direct-dry eye -indirect-any steroid creams near eye -nasal steroids
FamHX
I consistently high-falls in category of ocualr HTN
Two things that are important for OHTN patients
Fundus photos (stereo) OCT
AngioVue OCTA
- uses motion contrast to detect blood flow
- rapidly acquire multiple cross sectional images from a single location on the retina
- flow is the difference between two sequential scans
What does OCTA essentially tell us in glaucoma
Structure and function of optic nerve
Pulsar perimetry
SAP using pulsar target targets magnocellulat retinal ganglion cells specifically
If the M cells are not working properly, they have early disease
Electrophysiology for glaucoma
PERG
VEP can tell us damage anywhere in the visual pathway
Subjective: structure and function
Fundus photo
VF