Glaucoma Flashcards
Development of glaucoma
-drainage canal blocked
-fluid build up
-inc pressure damages blood vessels and optic nerve
-pressure pushes iris against cornea
Open-angle glaucoma
-lil speck on the eye
Glaucoma risk factors
-age/race
-corneal thickness or injury
-use of steroids
-HTN
-near/farsighted
-diabetes
-sickle cell anemia
Glaucoma sx
-none in early stage
-patchy blind spots in peripheral vision
-vision difficulty in central vision
Diagnosis of glaucoma
-measuring intraocular pressure
-corneal thickness measurement
-inspection of drainage canal
-vision loss assessment
-testing optic nerve damage
Open-angle tx goals
-increase outflow
-decrease humor production
-a2 agonists do both
Rx that increase outflow
-prostaglandin analogs
-cholinergics
-Rho kinase inhibitors
-a2-agonists
Rx that decrease humor production
-B-blockers
-carbonic anhydrase inhibitors
-a2-agonists
Open-angle tx approach
- Prostaglandin analogs
- B-blockers
1/2. A2 agonists - Carbonic anhydrase inhibitors
- Rho Kinase inhibitors
Last line: cholinergics
Prostaglandin analogs
-1st line tx open-angle glaucoma
-inc outflow
-“prosts”
-1 drop QHS
Prostaglandin analog drugs
-latanoprost
-bimatoprost
-travoprost
-taflupost
-1 drop QHS
Prostaglandin analog cautiosn
-eyelashes inc length and number
-darkening of eyelid, iris, skin, eyelashes
Prostaglandin side effects
-blurred vision
-stinging
-light sensitivity
B-blockers
-first line for open-angle glaucoma
-reduce humor production
-1 drop Qd or BID
B-blocker drugs
-betaxolol
-Timolol
-Carteolol
-Levobunolol
-1 drop qd or BID