General Flashcards
What is the clinical triad for carotid-cavernous fistula?
- Chemosis
- Pulsatile exophthalmos
- Ocular bruit
What is the most common cause of unilateral or bilateral proptosis in young and middle aged patients?
Thyroid eye disease (TED)
How is CCF treated?
Balloon embolization of the internal carotid
What systemic symptoms are associated with TED?
Heart palpitation
Weight loss
Heat intolerance
Hair loss
What are the classic signs/symptoms of orbital cellulitis?
Exophthalmos Lid edema Pain/restrictions on eye movement Fever Decreased VA Conj injection and chemosis
What 3 meds can cause pseudotumor?
Tetracyclines
Accutane
Contraceptives
In CCF, on MRI and angio, what would suggest CCF?
Asymmetrically enlarged cavernous sinus, or superior ophthalmic vein
What tests can be run to evaluate for TED?
Orbital CT (EOM enlargement w/o tendon involvement) T3 and TSH testing (High T3, low TSH)
What other types of pathology can TED cause?
SLK
Exposure K
Optic neuropathy
Restrictive myopathy
How is optic neuropathy from TED treated?
Immediate oral steroids (Pred 100mg QD 2-14 days)
OR
Orbital decompression
What risk factor significantly increases the likelihood of ophthalmic findings in TED?
Smoking
What is the Tx for orbital cellulitis?
Hospitalization
IV ABx (ceftiraxone or nafcillin)
Followed by oral ABx (augmentin, ceclor, bactrim)
Topical bacitracin or erythromycin if conjunctivitis or exposure are present.
What causes molluscum contagiosum?
DNA pox virus
What ocular reaction does molluscum contagiosum cause?
Follicular conjunctivitis
What is the typical presentation of molluscum?
Waxy, dome-shaped papules with central umbilication
What is the classic presentation of seborrheic keratosis?
Elevated, “stuck-on”, crusty, greasy, or plaque like lesion
What is the typical age range for seborrheic keratosis?
Elderly
What is the typical presentation of a keratoacanthoma?
Small, dome-shaped tumor on sun exposed skin, the progress to large lesions with central ulceration
What causes papillomas?
HPV
Follicals are associated with what 3 things?
Viral
Chlamydia
Toxic
What is the classic presentation of basal cell carcinoma?
Firm, pearly nodule with superficial telangiectasia.
May progress to central ulceration “rodent ulcer”
What is the most common type of skin cancer?
Basal cell carcinoma
What is the 2nd most common type of skin cancer?
Squamous cell carcinoma
Which is more likely to metastasize: Basal cell or squamous cell?
Squamous cell
What is the typical presentation of a sebaceous gland carcinoma?
Yellow, hard tumor on the upper eyelid that causes madarosis and thickened lid margins
What is the most lethal type of skin cancer?
Malignant melanoma
What is the typical presentation of malignant melanoma?
Irregular borders with rapid growth and color changes
What is the common precursor to squamous cell carcinoma?
Actinic keratosis (elevated scaly, pink/red lesion)
A Fleischer ring is an indicator of what condition?
Keratoconus
What is a Fleischer ring made of?
Iron deposits
What are the late stage signs of keratoconus?
Vogt striae
Munson’s sign
Hydrops
What are Vogt’s striae?
Vertical lines in deep stroma
V for Vertical lines
What is the classic presentation of staph marginal keratitis?
Stromal infiltrates in the periphery secondary to chronic bleph, without epi defect
RCE occurs most commonly in pts with a history of what?
Trauma (abrasions) Corneal dystrophies (ABMD)
What is a corneal ulcer?
Epi defect with associated stromal infiltrate
What are the UCRAP (HLA-B27) conditions?
Ulcerative colitis Crohn's Reactive arthritis Ankylosing spondylitis Psoriatic arthritis
What are the causes of granulomatous anterior uveitis?
Syphilis
Lyme
TB
Reactivated herp
What is the Tx for staph marginal keratitis?
ABx/roid combo Q4Hs
-Tobradex, zylet (lotepred, tobramy)
When using doxy for posterior bleph, what is the typical dosing?
100mg BID for 4 weeks, then QD for 3-6 months
What type of drug is natamycin?
Antifungal
What is the Tx for RCE?
Debridement Cyclo ABx Topical NSAID if needed BCL ATs
What Tx can be used to decrease recurrences of RCE?
Oral doxy 50mg BID x 2 months
Muro 128 ung QHS x 3 months
What is the classical presentation of fungal keratitis?
Gray-white corneal infiltrates with feathery edges and satellite infiltrates
What are 2 common topical antifungals?
Amphotericin B
Natacin
What are 2 systemic antifungals?
Ketoconazole
Itraconazole
What it the typical recall for staph marginal keratitis?
4 days
Then 3 weeks or so
What percent of newborns have congenital nasolacrimal duct obstruction?
5%
What is the typical presentation for dacryocystitis?
Epiphora
Edema over lac sac
Severe pain
What is the most common cause of an acquired nasolacrimal duct obstruction?
Idiopathic obstruction
What is the most common cause of congenital NLD obstruction?
Failure of the valve of Hasner to completely open by birth
What is the typical age of AKC?
Young to middle age
What are the common signs of AKC?
Corneal neo
Cataracts
Keratoconus
Milky edematous bulbar conj
VKC typically effects whom?
Young boys
What are the classic symptoms of VKC?
Intense itching Thick mucous Lacrimation Photophobia FBS Prominent papillae (cobble stone or Trantas dots)
Atopic dermatitis is what type of hypersensitivity reaction?
Type 1
What are the 2 cataracts associated with atopic dermatitis?
Shield cataract
PSC
What is the main cause of visual impairment in AKC?
SPK (interpalpebral)
What are the 3 mast cell stabilizers?
Alocril
Alomide
Alamast
When do mast cell stabilizers need to be used in order to be effective?
Prior to histamine release
What is the predominant area of ocular involvement in adult inclusion conjunctivitis?
Inferior
SLK is associated with what systemic condition?
Thyroid disease (50% of cases)
SLK can be cause secondary to what?
Contact lens wear
What is the typical presentation of SLK?
Thickened, red, sup bulbar conj
Velvety sup tarsal conj
Often bilateral, with adjacent SPK and filamentary keratitis
What is the most common cause of viral conjunctivitis?
Adenovirus
Viral conjunctivitis is more common in who, adults or kids?
Adults
Pharyngoconjunctival fever is cause by which serotypes of adenovirus?
3,4,5,7
What are the typical findings in pharyngoconjunctival fever?
Follicular conjunctivitis (occasionally hemorrhagic)
Low grade fever
Mild sore throat
What serotypes of adenovirus cause EKC?
8,19,37
What are the common findings of EKC?
+ PAN
SPK
SEKs in the 3rd week
Pseudomembranes
Are the majority of bacterial conjunctivitis cases cause by gram + or gram - bacteria?
Gram + (staph)
What gram - bacteria can cause bacterial conjunctivitis?
H. influenza
Moraxella catarrhalis
Which 2 bacteria are the most common causes of conjunctivitis in kids?
Strep pneumonia
H. influenzae
What are the common findings in gonococcal conjunctivitis?
Hyperacute discharge Conj chemosis w/pseudomembranes Papillary reaction Marked PAN Pain on urination Purulent urethral discharge
What is a possible severe consequence of conococcal conjunctivitis?
Corneal ulceration
What is another name for adult inclusion conjunctivitis?
Chlamydial conjunctivitis
What is the typical presentation of chlamydial conjunctivitis?
Unilateral giant follicals (limbal or palpebral), most concentrated in inferior fornices
Chronic red eye for weeks to months
What is the most common cause of preventable blindness worldwide?
Trachoma
What causes trachoma?
Chlamydia trachomatis serotypes A-C
What is the common presentation of trachoma?
Follicles in the form of Arlt lines (superior tarsal scarring) and Herbert’s pits
Follicular and papillary conjunctivitis of superior tarsal conj
Scaring of eyelids and ulceration from trichiasis
If you diagnose a non-CL wearer with SLK, what subsequent testing is warranted?
T3 and TSH
What is the frontline Tx for mild SLK?
ATs Q2Hrs
What is the additional Tx beyond ATs for mod/severe SLK?
Silver nitrate 0.5-1.0% applied to superior tarasal and bulbar conj, followed by irrigation and ABx ung
What is the Tx for filamentary keratitis?
Acetylcysteine 10% gtts, 3-5x/day
Mucomyst
What supportive measures can be taken for a pt with an adenovirus infection?
Cold compresses
Mild vasoconstrictors
ATs
IF SEVERE: mild steroid (lotemax) during first 1-2 weeks
What can be used to treat an adult with bacterial conjunctivitis?
5-7 days of QID of any of the following:
- Fluoroquinolones
- PolymyxinB/trimethoprim (polytrim)
- Tobramycin
What can be used to treat a child with bacterial conjunctivitis?
5-7 days QID of either:
- PolymyxinB/trimethoprim (polytrim)
- Bacitracin + polymyxin B (polysporin ung)
In cases of bacterial conjunctivitis with SPK, what medications are not recommended due to corneal toxicity?
Aminoglycosides (gentamicin, tobramycin)
What are the Tx options for chlamydial conjunctivitis?
1g azithromycin PO all at once
100mg doxycycline BID x 10 days
What is the Tx for a cornea involving gonococcal conjunctivitis?
Ceftriaxone IV (1g) 12-24hrs
What is the Tx for gonococcal conjunctivitis w/o corneal involvement?
1g ceftriaxone IM injection
What is the most common infectious cause of neonatal conjunctivitis?
Chlamydia
What is the Tx for Trachoma?
"SAFE" Surgery for trichiasis Antibiotics Facial hygiene Environmental hygiene
Patients with what 2 conditions present with pain out of proportion to findings?
SLK
Acanthamoeba
A lipid tear film deficiency results from what?
Blepharaitis
An aqueous layer deficiency is termed what?
Keratoconjunctivitis sicca
During what part of the day are KSC symptoms worse?
End of day
During what part of the day are MGD symptoms worse?
Morning
What 3 drug classes/types are associated with KCS?
Beta blockers
Oral antihistamines
Hormone replacement therapies
Name 3 collagen vascular diseases that are associated with KCS?
Rheumatoid arthritis
Sjogren’s
Lupus
A deficiency in what causes bitot spots?
Vitamin A
What is the typical demographic for KCS?
Women over 50
What is the typical demographic for Salzmann’s?
Female over 50
Salzmann’s is typically associated with what conditions?
Trachoma
Phlyctenulosis
KCS
What is the classic appearance of Salzmann’s?
Smooth, opaque, elevated, blue-gray stromal opacities
What ocular manifestation is associated with gout?
Band K
What is the common demographic for SLE?
Female, teens-20’s
What ocular findings may be seen in SLE?
Disc edema
Dry eye
Photophobia
Malar rash
What is the typical Tx for mild Salzmann’s?
ATs
What Tx can be utilized for acne rosacea?
Doxy 100mg BID with taper Omega-3's Metronidazole Warm compresses lid scrubs Topical abx
When does posterior polymorphous dystrophy typically get identified?
30’s-50’s
What is the most common symptom of posterior polymorphous dystrophy?
Decreased vision from edema
What occurs in the endothelium in posterior polymorphous dystrophy?
Metaplasia and overgrowth of endo cells
What is the classic presentation of posterior polymorphous dystrophy?
Bilateral, asymmetric patches of vesicles
Band-like lesions and geographic gray hazy areas at Descemet’s membrane
What is the inheritance pattern of Fuch’s endothelial dystrophy?
AD
Fuch’s endothelial dystrophy is most common in what demographic?
Post-menopausal women
An endo cell count of less than what will typically lead to edema?
<500 cells/mm^2
Disciform keratitis most commonly occurs in what condition?
Herpes simplex keratitis
What is the typical presentation of disciform keratitis?
Round area of central/paracentral edema with a clear demarcation between involved and uninvolved cornea
Scatterek KP may be present
What is the inheritance of macular dystrophy?
AR
“macul-AR”
When does macular dystrophy occur?
In the first decade of life
What is the typical presentation of macular dystrophy?
Child with diffuse corneal haze and irregular gray-white spots (mucopolysaccharide deposits
Decreased VA
Possible corneal erosions
What is interstitial keratitis?
Stromal inflammation without primary involvement of the epi or endo
90% of interstitial keratitis cases are aquired how?
Congenital syphilis
What is the clinical appearance of interstitial keratitis?
Salmon patch lesions (stromal neo) Stromal edema Conj injection AC reaction KPs
What is the clinical triad of congenital syphilis?
- Interstitial keratitis
- Hutchinson’s teeth
- Deafness
Papilledema and optic neuritis are found in which form of syphilis?
Tertiary
What are the Tx options for Fuch’s endothelial dystrophy?
NaCl 5% gtts QID or UNG
Glaucoma meds for IOP
What is the Tx for disciform keratitis?
Pred forte QID
Viroptic QID
What is the Tx for interstitial keratitis?
Topical steroieds
What medication can cause pigment deposition on the corneal endo?
Chlorpromazine
Malignant melanoma of the conj typically arise from what?
Primary acquired melanosis (PAM)
What is the most common conj malignancy in the US?
CIN
CIN gives rise to what malignant condition?
Squamous cell carcinoma
What is the typical presentation of CIN?
Elevated, gelatinous mass with neo
30% of primary acquired melanosis progresses to what?
Malignant melanoma
Primary acquired melanosis is caused by a proliferation of what?
Intraepithelial melanocytes
What is the typical presentation of a conj lymphoma?
Smooth, fleshy, subconj salmon-colored patch
What typically causes pyogenic granulomas?
Trauma
Surgery
What is the most important prognostic indicator of progression from PAM to malignant melanoma?
Thickness of the lesion
What 3 drugs can cause nystagmus?
Phenytoin (dilantin)
Phenobarbitol (luminal)
Salicylates
Which drug can cause blue/yellow color defects?
Digoxin
What type of cataracts can chlorpormazine cause?
Stellate cataracts
Amiodarone can cause deposits where?
Lens
What is the Tx for pyogenic granuloma?
ABx-steroid combo
tobradex, maxitrol
Pilocarpine can potentially cause what severe ocular side effect?
Retinal breaks
A history of cold sores and an increase in stress could lead to what ophthalmic condition?
Herpes simplex keratitis
Herpes simplex hides in which ganglion?
Trigeminal (gasserian)
What things may trigger recurrent HSK infections?
Stress Sun exposure Fever Trauma Immunosuppression
Which herpes simplex virus is most commonly responsible for HSK, type 1 or type 2?
Type 1
What is the early acanthamoeba presentation?
Epi defects ranging from SPK to whorl-like defects, to pseudodendritic lesions
Pain > signs
If left to grow, what is the more advanced presentation of acanthamoeba?
Patcy anterior stromal infiltrates that become confluent to form a ring ulcer
What are the Tx options for an HSK dendrite?
Viroptic
Zirgan
Why might Zirgan be preferred to treat an HSK dendrite over Viroptic?
Thimerosol toxicity of Viroptic
What is the typical presentation of Thygeson’s?
Small, bilateral, multiple, asymmetric, gray-white crumb-like clusters, central lesions
White, quiet eye
Look like SEIs, but more superficial
Stain minimally with NaFl
What are the 4 forms of ocular herpes simplex infection?
Epithelial keratitis
Disciform keratitis
Blepharoconjunctivitis
Keratouveitis
What is the Tx for HSK?
Viroptic Q2H for 5-7 days, then 5x/day for 7 days
NO STEROIDS on HSK (will work for stromal keratitis, though)
What is the Tx for herpes simplex stromal keratitis?
Pred forte QID
Viroptic QID
For recurrent HSK, what oral med can be prescribed?
Acyclovir 400mg BID
What is the Tx for herpes zoster ophthalmicus?
Acyclovir 800mg 5x/day OR
Valacyclovir 1000mg TID
What is the Tx for Thygeson’s?
ATs for mild severity
Severe:
Mild steroids (FML, loteprednol QID x 1 week)
Bandage SCL
What is the most common anterior corneal dystrophy?
ABMD (AKA EBMD, map-dot-fingerprint, Cogan’s dystrophy)
ABMD is slightly more common in which gender?
Female
What things characterize Von Hippel-Lindau disease?
Retinal capillary hemangioblastomas
What are the 5 drugs that can cause whorl keratopathy?
CHAI-T Chloroquine Hydroxychloroquine Amiodarone Indomethacin Tamoxifen
A cortical cataract can cause what type of refractive shift?
Hyperopic
A nuclear cataract can cause what type of refractive shift?
Myopic
PSC can be caused by what 2 things?
Steroids
X-rays
Which systemic condition may result in “Christmas tree cataracts”?
Myotonic dystrophy
What are the characteristics of myotonic dystrophy?
Miotic pupils External ophthalmoplegia Christmas tree cataracts Pigmentary retinopathy Muscle wasting and weakness
What is the inheritance of Wilson’s disease?
AR
Wilson’s disease results in an increased deposition of what?
Copper
In Wilson’s disease, where is copper most concentrated?
Liver
Brain
Cornea (Kayser-Fleisher Ring)
What signs/symptoms characterize Wilson’s disease?
Wrist tremor (asterixis) Basal ganglia degeneration Cirrhosis Corneal deposits Cataracts Carcinoma Dementia
What is the most common cause of pre-senile cataracts?
Diabetes
Severe atopic dermatitis can result in which 2 cataracts?
Shield cataracts
PSC
What type of cataract forms due to acutely high blood sugar?
Snowflake cataracts
What type of cataract is found in Wilson’s disease?
Sunflower cataract
What would differentials for glare or halos be?
Cataracts
Angle closure
Corneal edema
Corneal haze
Sildenafil carries a slight risk of developing what ocular condition?
NAION
What ocular side affect may occur from Digoxin use?
Blue-yellow defect
Entoptic phenomena
Retrobulbar optic neuritis
What is the average axial length of the eye?
24mm
A 1mm change in axial length of the eye results in what dioptric power?
3D