Test 4 Reverse Flashcards
(188 cards)
Inflammation of the eyelidS. aureus or epidermidisSeborrheicFrom direct bacterial infection & response against bacterial toxins Delayed hypersensitivity rxns to bacterial antigens
Anterior blepharitis
Inflammation of eyelidsDysfunction of meibomian glands
Posterior blepharitis
- Burning2. Itching3. Foreign body senstaion4. Crusting of the eye lashes5. Erythematous lid margins6. Scaling lids
S/S blepharitis
- Rosacea2. Eczema3. Prior lid injury
Risk factors of blepharitis
Usually bilateral may be asymmetric1. Lid erythema2. Lid telangiectasia3. Oily collerettes base of lashes4. Papules5. Pustules w/ rosacea
What would you see with slit lamp exam of blepharitis?
- Warm compresses 2x/day2. Eyelid scrubs after compresses3. Anterior - Topical abx if infected (erythromicin/bacitracin)Posterior - oral doxycyline
Tx blepharitis
Blowout FxOccurs with blunt force trauma to globe or orbital rim
What is the most common orbital Fx?
Medial wall & orbital floor-lamina papyracea
What is the weakest area for orbital Fx?
Blunt trauma1. Diplopia on upgaze2. Periorbital ecchymosis & edema3. Anesthesia of maxillary teeth & upper lip4. Step off deformity over infraorbital ridge5. Orbital crepitus
S/S Blowout Fx
- Plain skull XR w/ Waters & Caldwell views2. Teardrop sign CT scan needed to Dx & determine extent of damage (coronal & sagittal views)
How to Dx blowout Fx?
Surgery for persistent diplopia & endopthalmitisRefer
Tx blowout Fx
Aging1. Trauma2. Metabolic disorders3. Infections (rubella)4. Medications5. Congenital problems
MCC of cataracts & other causes ?
cataracts
What is the MCC of blindness in the world?
Changes in the lens protein affects how the lens refracts light, reducing clarity & visual acuityMay cause color to turn yellow, green, brown or white
What causes cataracts?
- Painless blurry vision or vision loss2. Glare3. Myopia4. Monocular diplopia5. Absent red reflex6. Leukoria
S/S cataracts
- Surgery w/ intraocular lens implantMay just remove it w/o implantRefer
How to Tx cataracts?
Idiopathic, sterile chronic granulomatous inflammation of the meibomian gland caused by a foreign body reaction to sebum
What is a chalazion?
- Chronic process of that results from an inflammatory foreign body reaction to sebum2. Blockage of normal drainage glands, especially at at the eyelid margin3. Blepharitis, acne rosacea or hordeolum may contribute to development
What causes chalazion?
- Nontender, palpable localized swelling2. Swelling points to the conjunctival surface3. No signs of inflammation
Dx chalazion
- Warm compresses and lid scrubsIf recurrent - refer for incision & curettage
Tx chalazion
Adenovirus1. BacterialStreptococcus pneumoniaeHaemophilus influenzaStaphloccus aureusNeisseria gonorrheaChlamydia trachomatis2. ViralHerpes simplex virus type 1 and 2Picornaviruses3. Allergies4. Chemical5. Irritative
What is the MCC of acute conjunctivitis, & others?
KidsAdults usually get viral
Who more commonly gets bacterial conjunctivitis?
Bacterial/viral1. Reduced host defenses & external contamination2. Leukocyte or lymphocytic inflammatory cascade leading to an attraction of read and white blood cells to the area. Allergic 1. Type 1 immune response to an allergen2. The allergen binds to a mast cell and crosslinking to IgE occurs3. Mast cell degranulation and initiation of the inflammatory cascade4. Releases histamines from mast cells and other mediators5. Histamine and bradykinin stimulate nociceptors resulting in itching, vasodilation, rednessand conjunctical injection.
Pathophysiology of Conjunctivitis
- Foreign body sensation2. Burning3. Itching4. Photophobia5. URI6. Family member with same symptoms7. Tearing8. H/o cold sores9. Crusting10. Lids stuck shut in the morning11. Hyperemia12. Pseudoptosis13. Preauricular LAD
S/S Conjuncitivits