Neda's typed out notes Flashcards
What is the initial glaucomatous damage seen on VFT?
Paracentral scotoma
What conditions are contraindicated for PG drugs for glaucoma?
- History of Uveitis
- CME
- HSK
- Complicated cataract surgery
What is the known ocular complication of a topical beta blocker?
Narrow Angles.
Pt’s who have a low BPM (Bradycardia), which ultimately should be avoided.
What are the 2 contraindications of CAI usage in glaucomatous pt’s?
Corneal endothelial compromise (Fuch’s dystrophy) and Sulfonamide allergy.
What are the 2 systemic side effect relative contraindication in patient taking what certain medications?
MAO inhibitors and Bradycardia
When should you assess the efficacy of a topical drop in a glaucomatous patients?
4 to 6 weeks
When should be the follow up for a pt who has achieved their target IOP?
3 to 6 months
Signs: Recurrent attacks of unilateral acute raised IOP (Usually 40 to 60mmHg) associated with mild anterior uveitis?
Posner Schlossman Syndrome
What is the “speculated” cause of Posner Schlossman syndrome?
Acute Trabeculitis ; possibly by CMV or H. Pylori
What is the treatment for Posner Schlossman syndrome?
- IOP controlling meds (Timolol 0.5% BID
- Short course (1 week) steroids (Prednisolone Acetate 1% QID)
- If significantly high, use Oral CAI
True or False, synchiae are formed during Posner Schlossman syndrome?
False. Synechiae and optic nerve damage is not seen. However, corneal edema is.
Which two layers of the angle will you see black pigment with a pt who has Pseudo-exfoliation syndrome?
Trabecular meshwork and Anterior to Schwalbe’s line (Sampaolesi line)
When is IOP the highest?
Night time
When is Aq humor production the lowest?
12am to 6 am
When Aq humor production the greatest?
In the morning
What is the fastest peak glaucoma drug?
Beta blocker
When does a drance heme go away?
1 to 3 months
What is the most common location for a drance heme?
Inferior Temporal
Which condition likely occurs due to elevated IOP following retinal vascular conditions?
CRVO
What is the IOP target when to treat for precautionary measure to avoid CRVO?
30 mmHg and above
How long does it take for a “steroid” to cause an increase in IOP?
4 weeks
How would you taper steroids?
Start by prescribing QID x 5 days, then tapers to BID x 5 days and then qd x 5 days.
Note: Longer the treatment period or frequent dosage, the longer the taper will be.
What is the most commonly encountered form of infantile glaucoma?
Primary Congenital glaucoma
What are the signs of Primary congenital glaucoma?
Male 75% Bilateral Before 1st birthday Sporadic orgin Abnormal angle (either flat iris insertion or a concave iris insertion) No systemic condition No inheritance pattern
What are the symptoms of Primary congenital glaucoma?
Photophobia, epiphora and blepharospasm
Note: Corneal appear cloudy due to corneal edema.
Which layer of the cornea will result in a tear when a pt has Primary congenital glaucoma?
Descemet’s
If the glove enlarges and the structures stretch with a pt suffering from primary congenital glaucoma is called?
Buphthalmos
What are horizontal breaks called when associated with congenital glaucoma? Which layer does this occur?
Haab’s striae and ruptures in Descemet’s membrane
What is the preferred procdeure for Congenital glaucoma?
Goniotomy (TM is incised)
Note: Trabeculectomy is used as a last resort when the cornea is not transparent and Schlemm’s canal cannot be located.
What occurs to the cupping observed earlier in congenital glaucoma?
Reverses back to normality due to increased elasticity of connective tissue
When should a pt return with POAG?
1 month
The reason is to get various IOP readings throughout the day’s time frame and to establish a baseline and to re-measure IOP.
What test would aid in the diagnosis of OHTN?
VF Test; Should be within normal limits for OHTN pt’s.
This was the criteria in the Ocular Hypertension Treatment study (OHTS)
What is the first line of drug for the treatment of open angle glaucoma and ocular hypertension?
PG’s. It lowers the most amongst all classes of glaucoma medications.
What is the second line of choice for glaucomatous patients’?
Beta Blockers ; if no heart rate or asthma issues.
What is the typical clinical presentation of a pt with plateau iris?
Female
30 to 50’s
Myopic Refractive error
What is the common sign seen with indentation gonioscopy is preformed on a plateau iris?
Double hump sign
Note: LPI should be considered as a first line of treatment to counter act pupillary block
What is the treatment for PDS?
Miotic agent is the first line of treatment (Pilocarpine 4% gel qhs)
What is stage 1 in neovascular glaucoma?
Rubeosis iridis
What is stage 2 in neovascular glaucoma?
Open angled neovascular glaucoma
What is stage 3 in neovascular glaucoma?
Angle closure neovascular glaucoma
Where does iris neovascularization occurs?
Pupillary margin
What is the firstline of treatment for neovascular glaucoma?
Panretinal photocoagulation
Where do the newly formed abnormal vessels from iris neovacularization originates from?
Capillaries of the Minor Arterial Circle of the Iris
What 2 ocular procedures increases the risk of developing neovascular glaucoma in an eye with iris neovascularization?
Cataract surgery and Vitrectomy
What are 2 side-effects are most frequently associated with Topamax?
Myopic shift and Angle closure
What is the angle closure treatment?
1 gtt timolol 0.5%
1 gtt pilocarpine 2%
1 gtt apraclonidine 1%
Acetazolamide 500mg PO
Measure IOP every 15 to 30 mins
If the IOP does not reduce in 1 hour; add hyperosmotic like glycerin or isosorbide for diabetic pts
Who are the most common individuals who get angle closure glaucoma?
South-East Asian, Eskimo or Chinese descent.
What common oral antihistamine can cause angle closure?
Benadryl
What is the term when it refers to the duty of an optometrist to avoid acts that could potentially harm a patient?
Non-maleficence
Who governs CTL’s?
FDA
Which type of contact lens, hydrogel or silicon, has higher incidence of lipid deposit?
Silicon
Note: Hydrogen has protein deposit
Which was is the filter oriented in Polarized glasses?
Vertically
In which meridian does flexure cause OR cylinder?
Same meridian of the corneal toricity
How much center thickness should be increased for each prism diopter?
1.0mm for each PD
What happens when you increase the Dk in gas permeable lenses?
Increase oxygen and wettability decreases
What is the etiology of dimple veiling?
Poor tear exchange under the GP lens and CO2 gas from the cornea, when wearing a GP lens and causing the cornea to have indentations
How do you get rid of dimple veiling?
Removing the CTL for several hours will typically allow for resolution of dimple veiling.
Long term: Decrease the OVD and Flatten the base curve
What is the treatment of choice for getting rid of dimple veiling?
Decrease the diameter of the OZD.
Which types of CTL’s are more prone to jelly bumps?
Hydrophillic
Which non silicone hydrogel soft lenses will have more protein deposits?
Group 4
LHLH -NNII
Which type of lenses tend to attract more proteins?
Ionic compounds
Which populations has the highest predilection for refractive error of myopia?
Japanese, Chinese, Jewish and Arab.
Rare in African Americans
You have an african american pt who has had there 3rd hypema in few years, what should you do next?
Screen for Sickle Cell
What is the treatment for Hyphema?
Atropine 1% BID to TID (Scopolamine)
What is the f/u for hyphema?
1 day ; do GONIO in 4 weeks.
What is the elevated element when a pt has Band Keratopathy?
Calcium
What is the treament for mild band keratopathy?
AT’s 4 to 6 times a day w/wo bandage CTL
What is the treatment for severe band keratopathy?
EDTA, however if there is stromal haze, PTK can be used to improve vision.
Posterior embrytoxon is an anteriorly displaced Schwalbe’s line, which type of inheritance is it?
Dominant trait
What is the difference between Axenfeld anomaly vs. Rieger anomaly?
Axenfeld anomaly (Posterior Embryotxon) is when the scwalbe’s line is anteriorly displaced. Rieger anomaly is Axenfeld anomaly and correctopia as well.
What is Peter’s Anomaly?
Rare but bilateral Axenfeld-Reiger anomaly and central corneal opacity.
What seasons does VKC generally occur?
Spring and Summer
What is the treatment for VKC?
Loteprednol etabonate 0.2% 1gtt OU QID
What is the follow up for VKC?
1 week –> Check IOP even though Alrex is a soft steroid
What is good for a 2yo who has allergic conjunctivitis?
Pataday
What is the treatment for Molluscum Contagiosum?
Excision of the lesion or removal via laser
What is a common associated sign with Molluscum Contagiosum?
Unilateral folliculitis located on the same side of the lesion
What are the 5 major findings when associated with Trachoma?
Mucopurulent discharge Lymphadenopathy Red eye Superior tarsal follicles Superior pannus
Treatment for Trachoma
Oral doxycycline, Tetracycline, Azithromycin or Erythromycin
What is the category for refractive surgery with CK?
+0.75 to +3.00 D and less than 0.75 D of astigmatism
How long does Epithelial ingrowth occur after lasik?
Several days to weeks
Monitor pt for 2 weeks.
What is another name for DLK?
Sands of Sahara
How long after does DLK occur after Lasik?
2 to 5 days.
Contrast sensitivity and visual acuity are decreased for how long status post Lasik?
3 months
Which staining agent is the best to use for HZV?
Rose Bengal
Some studies have shown that NaFl poorly stains
What is the treatment for HZV?
Acyclovir, Famciclovir or Valcyclovir should be initiated within 72 hours of the onset of skin lesions.
What is the follow up for HZV?
1 to 7 days of the initiation of treatment.
Follow up 1 to 4 weeks
then 3 to 6 months as relapse may occur
What are the signs of HSV?
a) Unilateral follicular reaction
b) Lymphadenopathy
c) Tearing
d) Ocular irritation
e) Photophobia
f) Blurry vision
g) Decreased corneal sensation
h) Crops of skin vesicles
What is the treatment for HSV?
Triflurdine (Viroptic), Vidaradine (Vira-A) and Ganciclovir (Zirgan) Ointment
q2h
F/U for HSV?
2 to 7 days, stain with FLC and Rose bengal
What is the prophylaxis treatment to prevent epithelial keratitis caused by HSV?
400 mg of Acyclovir BID for 1 year
What is an early sign of Acanthamoeba Keratitis?
Epithelial mottling (Psuedodendrite)
Where is the break in Polymorphous dystrophy?
Descemet’s Membrane
What layer does PTK remove?
Epithelium and superficial stroma
What layer does DALK transplant?
Stromal
What layers are replaced in DMEK?
Descemet’s and Endothelium, however host stroma is still used.
What layers are transplanted in DSEK?
Descemet’s and Endothelium, while a donor stroma is also used.
What are the 2 major demographics Terrien’s Marginal Degeneration are predisposed to?
Men
2nd to 4th decade
What is the F/U for a pt with Terrien’s Marginal Degeneration?
6 to 12 months
What is the predilection for Salzmann’s?
Females and >50 YO
What are the nodules in Salzmann made of and what layer do they impact?
Hyaline and Bowman’s
What is the management of Salzmann’s?
Lubricants, Steroids (if inflammed), Bandage CL.
What is the reason for refractive error to change during pregnancy?
Increase in central corneal thickness, possibly due to edema and fluid retention.
What type of refractive error occurs during pregnancy?
Myopic shift
What are two major decreases that occur during pregnancy, in regards to the eye?
Decrease in corneal sensitivity and decrase in IOP
What is Siderosis?
FB which dislayed intraocular involvment
Usually due to Iron will lead to enzymal toxicity
What is the agic number in endothelial loss in Fuch’s endothelial dystophy?
1800 cells/mm2 (Normal is 2400 cells/mm2)
Fuch’s is predominantly occurs more so in women, is there an inheritance pattern?
Yes, Autosomal Dominant
The same patien returns one year later with a further reduction in acuity and ishes to undergo cataract surgery. You notice that she has Fuch’s dystrophy. This finding puts him most at risk for which post-operative complications?
Pseudophakic Bullous Keratopathy
What would you give a pt that has a corneal abrasion from vegetative matter?
Gatifloxacin (Zymar) QID
We are worried about Pseudomonas.
What is a pt with a corneal abrasion is in pain?
Rx Ketorolac Oph solution QID. A topical NSAID maybe prescribed.
What is the normal protocol for treating EKC?
AT’s and Vasoconstrictor
What is the most common etiology of Filmentary Keratitis?
Keratoconjunctivitis Sicca
What is the treatment for Filamentary Keratitis?
Mechanical debridement and removal of corneal filaments.
Acetylsycteine (Mucomyst) when applied will help alleviate the attachment.
FDA requires soft CTL wearer to be out of contacts for how long prior to surgery?
2 weeks
RGP’s are 1 month
When does Keratoconus generally start in an individuals life?
Starts at Puberty but stablizes in 3rd and 4th decades of life
Which layer does Fleischer’s ring occur?
Bowman’s layer and must be seen with a Cobalt Blue filter due to Iron deposition.
Which layer do Vogt’s Striae occur in?
Stroma
What is the percentage of pts who develop corneal hydrops from Keratoconus?
5%; usually ocur in Descemet’s membrane
What is the topography presentation in Keratoconus?
Inferior steeping or a “sagging bowtie”
What type of topography is noticed on forme fruste keratoconus?
Central or Paracentral irregular astigmatism
Should a pt be recommended for Lasik if they have Forme Fruste Keratoconus?
No, as this could progress into a serious ectasia such as Keratoconus.
What IOP measuring tool is best used for individuals with Fuch’s Endothelial dystrophy?
ORA (Ocular Response Analyzer); eliminates corneal hysteresis
What is the treatment for arc welder’s flash?
AT’s (preservative free) every 2 hours and Vigamox QID
Prognosis is good due to good if treatment started, if not high chance for infectious keratitis to occur due to epithelial barrier has died.
What is the usage of Acular?
Decrease Conjunctival
Post Cataract inflammation
CME
Seasonal Allergic Conjunctivitis
What are the 3 major side effects of a Topical AH/Mast cell stabalizers?
Stinging upon instillation, Headaches and Adverse taste (Use punctual occlusion)
What is the immediate thought process of a unilateral arcus?
Contralateral Carotid Artery disease of potential occlusion.
The reason why this is due to the fact that the contralateral artery is blocked thus the lipid deposition is not making to the non-arcus eye.
Which topical steroid needs to be shaken?
FML, since its a suspension
What are the only 3 anti-histamine/mast cell stabilizer?
- Lastacraft QD
- Patanol BID
- Zaditor BID
How often is Cromolyn Sodium (Mast cell stabilizer) should be used?
4 to 6 times/day
Which systemic anti-depressant is commonly associated with suicidal thoughts?
Wellbutrin
What is the MOA of Warfarin?
Inhibits the activation of clotting factors that depend on vitamin K for synthesis
What is the MOA of Heparing?
Inhibits the conversion of prothrombin to thrombin
What is the MOA of Aspiring?
Irreversible inhibition of platlet cycloxygenase
What is the function of Biguanides (Glyburide or Metformin)?
Act by increasing insulin sensitivity; molecular target is the AMP dependent protein kinase (AMPPK)
Biguanides are associated with lowering of serum lipis and decrease weight, however it is useful against what systemic condition aswell?
Polycycstic Ovarion Syndrome (PCOS)
What is the MOA of Thiazolidinediones (-glitazone)?
Enhance the action of insulin at target tissues
What is the MOA of Sulfonylureas (Glipizide, Glyburide and Glimepiride)?
Stimulate secretion of insulin from pancreatic cells increasing the level of circulating insulin
May cause Hypoglycemia
Which common medication causes tinnitus?
Aspirin
Phenlyephrine is what type of dilation medication?
Sympathomimetics
Cholinergic antagonist (ASHCT), inhibit which cholinergic receptors in the iris sphincter?
Muscarinic
Which 4 of the following medication have been linked to cataract formation?
- Amiodarone (Anterior sub-capsular lens deposits)
- Steroids (Posterior subcapsular opacification)
- Allopurinol (longer than 3 years are at greatest risk)
- Chlorpromazine, Phenothiazines, gold and busulfan (cataract formation)
Whats the treatment for syphilis?
3 to 4 million units of IV Penicillin G q4h 10 to 15 days
What are the two commonly used medications for gonorrhea?
Ceftriaxone and Azithromycin
What is the common medication for the treatment for Chlamydia?
Doxycycline
What is the best treatment for anterior uveitis?
Prednisolone Acetate 1% q1h and Cyclopentalate 1% BID with a follow up in 1 day.
Which of the following is an absolute contraindication of using 10% Topical Phenylephrine?
TCA’s such as Amytriptyline
What is an ocular side effect of Dilantin?
Nystagmus
Phenytoin blocks voltage-sensitive Na+ channels in neurons, resulting in reduced repetitive firing and thereby helping to treat most seizure disorders.
What is the most common side effect of subcutaneous injection of Kenalog?
Depigmentation at the injection site
Which drugs can cause a myopic shift?
Isotretinoin, BCP’s, Topamax and Diuretics
What is the MOA for Zoloft?
SSRI
Which NSAID is known to increase the risk of stroke, Myocardial Infarction and Thrombosis?
Indomethacin
Which drops are used with caution in pigment dispersion syndrome?
2.5% Phenylephrine and Pupil mydriasis
What is the treatment for an ulcer in the periphery that is 1mm in size and minimal anterior chamber reaction?
Ciproflocacin every 2 to 4 hours
Ulcer 1.5mm and higher should be treated with?
Fortified Tobramycin or Gentamycin, alternated with fortified cefazolin or vancomycin every 30 mins. If not available, then FLQ 1gtt every 5 minutes for 25 minutes, then every 15 minutes for 45 minutes , then every half hour for 1 day.
How long does it take Pseudomons Aeruginosa to liquify the cornea?
1 to 2 days.
What condition is associated with HLA-A29?
Birdshot Retinopathy
HLA DR4 is associaed with what condition?
Vogt-Koyanagi Harada syndrome