6.1d - Eye diseases

what is conjunctivitis

pink eye, when your eye is infected with a virus or bacteria

where does infection occur for conjunctivitis

conjunctiva

what is conjunctivitis caused by

bacteria transfer from your hand to your eyes

what are symptoms of conjunctivitis

pink eye, sticky pus comes out of the eye made by bacteria, itchiness

why is the eye pink for conjunctivitis

dilated blood vessels trying to bring white blood cells to fight infection

is pink eye infectious

yes

what is treatment for pink eye

antibiotic ointment

what is a stye

bacterial infection of eyelids, when bacteria blocks cells and creates a bulb

what happens if you pop a stye

bacteria spreads

how do you treat a stye

put antibiotic gel to kill bacteria

what do you do if a stye is not an infection

a minor surgery to drain the bulb

what is glaucoma

when the drain for aqueous humour is plugged

what happens to the eyeball in glaucoma

the eyeball begins to swell due to increased fluid and begins to expand creating a lot of pressure

what happens to the optic nerve in glaucoma

it is becoming compressed and is dying

what are symptoms of glaucoma

discomfort, pain, some vision loss, permanent vision loss

how do you treat glaucoma

surgery to release aqueous humour and fix the drain

what is a cataract

when the lens becomes foggy and vision becomes blurry

what is the cause of cataracts

exposure electromagnetic radiation but also comes with age

how do you treat cataracts

replace the lens with a plastic lens followed by laser eye surgery

what is the cause of detached retina

poor health or concussions

what happens after the retina starts to peel

fluid begins to build behind the retina which forces more retina to peel

what are symptoms of detached retina

blurry vision followed by vision loss

how do you treat detached retina

using lasers to burn it back on and inserting an air bubble to push the retina against the eyeball to heal

does vision loss result in some form of permanency

yes

what is corneal scarring

an eye injury caused by scratches on the cornea or cloudiness on the cornea

what causes corneal scarring

usually accidents

how do you treat corneal scarring

either seal up the scratch or corneal replacement transplant