Red Eye 2 - Glaucoma Flashcards
Red Eye, pain, maybe change in Va!
Glaucoma
Glaucoma
– Atrophy of retinal ganglion cell layer in presence of increased
intraocular pressure!
– Increased IOP has not been defined as causative!
– Risk factors!
• Fam Hx glaucoma!
• Increasing age!
• DM!
• Obesity!
• Hx of Ocular trauma!
– Leading cause of blindness among African Americans
• Primary open-angle glaucoma!
– Mc glaucoma!
– Occurs in 15% of over 80 crowd!
– Anterior Chamber (AC) anatomy appears normal, but
aqueous outflow is reduced!
– Progressive visual field loss begins peripherally and
occurs so slowly Pt may not be aware of it until late in
progress of disease!
– Intraocular tension is an effective screen!
Glaucoma—Pathophysiology!
• Chronic (Wide-angle) Glaucoma!
• Chronic (Wide-angle) Glaucoma!
– Common and degenerative in the elderly!
– Obstruction of canal of Schlemm à diminished
outflow of aqueous humor!
– Intraocular pressure increases slowly and
asymptomatically!
– Increased pressure compresses blood flow to retina =
ischemia and damage to retinal cells!
• As pressure increases, more of the retina and optic disc are
damaged!
– Damage is irreversible, eventual blindness!