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42 Cards in this Set

  • Front
  • Back

Astigmatism

A stig = a stick. many stick of light around in the eye


Eye does not focus light on retina evenly. Objects appear blurry and stretched out.

Presbyopia

Age related. Ability to focus on objects close up is more difficult. Eyeball is no longer able to change shape as easily to accommodate different focal lengths (tx: need reading glasses/bifocals). Presbyterian = presbyopia = age related

Cataracts

decreased transparency of crystalline lens = decreased vision protein coagulations form opaque areas for unknown reasons natural process of aging Progressive and irreversible but surgery is effective and safe cataract progression can be slowed by decreasing sun exposure and smoking cessation

Leukokoria

white pupil = cataract


leukocytes: white blood cells. leuko=white

Glaucoma

IOP: increased intraocular pressure causing optic nerve damage and/or visual field loss from capillary microinfarction=optic nerve ischemia

Primary Open Angle Glaucoma (POAG)

primary condition, not secondary to anything else. how to eval: need opthamology eval with slit lamp exam and IOP measured by tonometry

POAG: cup-to-disc ratio. can IOP alone be used to dx?

increased. IOP alone cannot be used to dx

Primary angle-closure glaucoma:

relatively rare symptoms: unilateral HA, visual blurring, n/v non reactive pupils that are semidilated Emergency! can have irreversible eye damage if untreated

Flashers

Photopsia = flash like a photo

Floaters:

entopsia = float en top, or on top. things float on top of the water.

Flashers and floaters caused by:

Caused as the vitreous (gel that helps the eyeball maintain shape) shrinks and becomes "stringy." These strands can cast shadows within the eye ball. Common with aging.

Vitreous detachment:

When a section of the vitreous pulls away all at once, instead of gradually, causing new floaters to suddenly appear. Usually not sight threatening and does not require treatment

retinal detachment

Occurs when the neurosensory retina is separated from the retinal pigment epithelium. Sudden increase in floaters, light flashes, peripheral vision loss Can feel like a "curtain going down on eye." If left untreated, can lead to perm vision impairment

Macular Degeneration and 2 types:

age related macular degeneration (AMD) is the leading cause of blindness in the US 2 types: wet dry


 

Exudative or Wet AMD describe and tx

wet = war


Rapid vision loss due to development of abnormal blood vessels under the retina. These blood vessels will leak fluid. Straight lines often appear wavy. Refer to opthamology immediately. Wet: fluid leaks = fast vision loss tx: laser surgery

Nonexudative or dry AMD describe and tx

Dry = drawn out


Light-sensitive cells of the macula slowly break down. There is gradual loss of central vision. Three stages (early, intermediate, and advanced). Dry = central to vision. lose central vision. tx: if early, zinc can slow progression. if advanced, no tx.

Myopia

nearsightedness: my = close to me ◦ Objects up close are clear, but far away objects are blurry.

Hyperopia

farsightedness: hyper: when molecules are hyper, they are trying to get far away from each other

Pterygium:

non-cancerous growth of the conjunctiva. One or both eyes may be involved. Usually painless. peter is a farmer who gets non-cancerous growth on conjunctiva

Pinguecula

common, non-cancerous growth of the conjunctiva. ◦ A pinguecula is a small, yellowish nodule on the conjunctiva near the cornea. It can appear on either side of the cornea, but tends to appear more on the nasal side. Pinguecula = ping pong ball on eye ball

Dry Eye Syndrome tx

Treatment: treat the cause first. Artificial tears, eye lubricants also helpful. Avoid aggravating activities.

Uveitis/Iritis: 2 types

Uvea is the middle layer of the eye, provides most of the blood supply to the retina Anterior and posterior uveitis

Anterior uveitis:

also known as iritis, inflammation of anterior part of the eye including the iris and ciliary body pain is moderate and aching central redness of eye and ciliary flush

Posterior uveitis

Involves the posterior aspect of the uvea, which contains the choroid, a layer of blood vessels and connective tissue

tx for uveitis:

Usually mild. Treated with sun protection. Possible use of steroid eye drops or pupil dilation drops. Should be prescribed by an opthamologist bc can threaten their vision.  Uveitis can lose vision over night so call immediately.

Episcleritis

benign inflammation of the covering of the sclera Bilateral with mild stinging Usually improves without treatment

Scleritis

unilateral Inflammation of sclera can result in destructive disease

Subconjunctival Hemorrhage

Result of a small blood vessel rupture in the conjunctival tissue • no pain or irritation • Often first noticed by others or when looking in mirror

Periorbital cellulitis

Usually results from sinus infection. There is only a thin bone layer between the sinuses and the orbit space. Eye pain Conjunctivitis Epiphora (blurred vision, periorbital erythema, and edema)

Chandlar staging system for periorbital cellulitis

▪ Stage I: Periorbital cellulitis ▪ Stage II: Inflammatory orbital edema ▪ Stage III: Subperiosteal abscess ▪ Stage IV: Orbital abscess

Orbital cellulitis

Orbital (postseptal) cellulitis is an acute infection of the tissues immediately surrounding the eye, including the eyelids, eyebrow, and cheek. Bacteria from a sinus infection usually cause this infection. This was often caused by Haemophilus influenzae, now much more rare due to HIB vaccine. Can be caused by other bacteria such as Staph aureus, strep pneumoniae, or GABHS. Dangerous: need IV antibiotics can lead to blindness

Blepharitis and tx

Inflammation, Itching, crusting, and erythema of eyelid margins Caused by staph infection or seborrheic dermatitis, rosacea, or allergies tx: cellufresh or Bion tears, warm compresses

Hordeon

stye. if you hord things, those things stay around. ford = stye. tx: warm compresses, abs, cleanse eyelids with baby shampoo

Chalazia

meibomian glands: me bohemian. bohemian = no pain no pain

Pupil: Iris: sclera:

Pupil: black Iris: flower: beautiful sclera: white

Strabismus

1 wondering eye

Amblyopia

untreated or insufficiently tx amblyopia causes permanent visual loss the brain cannot focus on 2 images. the brain only picks 1 image ang does with it so you slowly lose vision in 1 eye. You can lose vision in either eye (the affected eye or the non-affected eye, whichever the brain chooses).

NasoLacrimal Duct Obstruction

abnormal occlusion of nasolacrimal duct. can be from trauma, infection, or born with this. This causes baby’s eye to water all the time. at first, its just tears and not purulent. It can become purulent after time if infection occurs.

Conjunctivitis:

Viral: watery drainage Bacterial: mucopurulent discharge Allergic: stringy discharge

bacterial conjunctivitis tx:

erythromycin drops in 0-12 months ofloxacin drops in 12 months and older

Visual acuity refer: age 3 age 5 age >5

• Age 3: 20/50 or worse • Age 5: 20/40 or worse • >5 years: 20/30 or worse, or two line difference between the two eyes at any age

screen for vision and color at what age:

3 yo