Opthamology Flashcards
What is macula of the retina
This is the part of the retina that is most densely packed with the ‘seeing cels’ - cones
What is the choroid and what does it do
This is the layer of tissue behind the retina , contains may tiny blood vessels. These help to take 02 and nutrients to the retina
What is the membrane called that forms a barrier between the choroid and the delicate retina
Bruchs membrane
The thick outer white layer of the eye is called
The sclera
What is the surgery called for cataracts
Phaecoemulsification
- intraocular lens implant
What happens to vision in cataracts
Their is clouding of the lens
What is the most common cause of blindness over 60s in the western world
Glaucoma
What is wrong with the eye in a person who has glaucoma
The optic nerve has been damaged, usually related to high pressure in the eye
Patient presents with pain in the eyes an haloes around lights, however symptoms are relieved when they are asleep.
What condition might you be suspicious of?
Mild attack of glaucoma
Patient presents complaining of ; rapid deterioration in vision, intense eye pain, redness and watery eye, sensitivity to light, haloes around the eyes. Nauseas and vomiting
What is happening here
Full glaucoma attach
How can we trea glaucoma
Reduce the production of fluid in the eye
- beta blocker drops
Increase drainage of fluid via laser or surgery
Age related macular degeneration affects only what field of vision?
CENTRAL vision
What happens in dry AMRD
This is the most common type
There is slow atrophy of the photo receptors at the macula
There is no treatment
What is wet AMRD
Dry AMRD plus leakage of blood and fluid at the macula.
This is much more rapidly progressive
Laser Treatment can be. Effective
Diabetes can cause a variety of issues for patients eyes;
Cataracts
Glycaemic vessel damage
Leakage
Ischamia
Neovascularisation
How can a patient limit this from happening
By attending their diabetic retinopathy screening at least annually
Improving thier diabetic control
