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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. |
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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 |
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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 |
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Leukokoria |
white pupil = cataract leukocytes: white blood cells. leuko=white |
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Glaucoma |
IOP: increased intraocular pressure causing optic nerve damage and/or visual field loss from capillary microinfarction=optic nerve ischemia |
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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 |
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POAG: cup-to-disc ratio. can IOP alone be used to dx? |
increased. IOP alone cannot be used to dx |
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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 |
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Flashers |
Photopsia = flash like a photo |
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Floaters: |
entopsia = float en top, or on top. things float on top of the water. |
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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. |
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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 |
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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 |
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Macular Degeneration and 2 types: |
age related macular degeneration (AMD) is the leading cause of blindness in the US 2 types: wet dry
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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 |
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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. |
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Myopia |
nearsightedness: my = close to me ◦ Objects up close are clear, but far away objects are blurry. |
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Hyperopia |
farsightedness: hyper: when molecules are hyper, they are trying to get far away from each other |
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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 |
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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 |
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Dry Eye Syndrome tx |
Treatment: treat the cause first. Artificial tears, eye lubricants also helpful. Avoid aggravating activities. |
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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 |
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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 |
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Posterior uveitis |
Involves the posterior aspect of the uvea, which contains the choroid, a layer of blood vessels and connective tissue |
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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. |
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Episcleritis |
benign inflammation of the covering of the sclera Bilateral with mild stinging Usually improves without treatment |
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Scleritis |
unilateral Inflammation of sclera can result in destructive disease |
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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 |
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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) |
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Chandlar staging system for periorbital cellulitis |
▪ Stage I: Periorbital cellulitis ▪ Stage II: Inflammatory orbital edema ▪ Stage III: Subperiosteal abscess ▪ Stage IV: Orbital abscess |
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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 |
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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 |
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Hordeon |
stye. if you hord things, those things stay around. ford = stye. tx: warm compresses, abs, cleanse eyelids with baby shampoo |
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Chalazia |
meibomian glands: me bohemian. bohemian = no pain no pain |
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Pupil: Iris: sclera: |
Pupil: black Iris: flower: beautiful sclera: white |
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Strabismus |
1 wondering eye |
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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). |
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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. |
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Conjunctivitis: |
Viral: watery drainage Bacterial: mucopurulent discharge Allergic: stringy discharge |
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bacterial conjunctivitis tx: |
erythromycin drops in 0-12 months ofloxacin drops in 12 months and older |
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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 |
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screen for vision and color at what age: |
3 yo |