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44 Cards in this Set
- Front
- Back
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epicapsular stars are reminants of what
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tunica vasculosa lentis
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your pt was in a car accident and now there is a ring on the anterior of their eye. what is this
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vossius ring it is melanocystes from the pupillary border of the iris
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vossius ring needs to be DDx from what
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posterior synechiae remnants and episcleral stars
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capsular pigment dusting maay be due to what
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pigment dispersion syndrome, pseudoexfoliation or ocular trauma
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what is a pigment line called behind schwalbes line that could be associated with pigment dispersion syndrome.
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sampaolesi line
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mittendorfs dot is usually displaced in what direction
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inferior nasal
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what is mitten dorfs dot a reminant of
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hyaloid tissue
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what is the most common senile cataract
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nuclear
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nuclear cataracts reduce what wavelength of light
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blue
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what color does a mature nuclear cataract look
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brown, maybe even red in advanced forms
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cortical cataracts generally start in what quadrant
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inferior nasal
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many cortical spokes can cause a
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cortical band
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posterior, anterior, or nuclear, which one rarely in senile form
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anterior subcapsular
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anterior subcapsular cataracts are usually from what
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external or surgery
IOP, Wilsons, pilocarpine, Amiodarone |
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an anterior polar pyramidal opacity is unique b/c
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it projects into the anterior chamber and may be persistent with pupillary membrane
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what usually appears b/f a PSC
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senile nuclear sclerosis
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what is more likely to cause PSC topical or oral steroids
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oral
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how fast could a PSC form from use of steroids
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2 weeks
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what are some causes of PSC other than steroids
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myotonic dystrophy, congenital hereditary retinal dz, irradiation, severe mittendorfs dot
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what is the best way to view a PSC
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dircet ophthalmoscopy
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lamellar cataracts are senile, congenital, or acquired
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invariably congenital
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lamellar cataracts involve what zones
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fetal or uclear
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when you see spoke like opacities in a lamellar cataract what are they called
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riders
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congenital cataract that are y shaped with in the lens nucleus
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sutural cataract - no significance or symptoms
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what are the grading intervals for
nuclear color nuclear opalescence cortical cataract PSC |
0,1,2
0,I,II,III, IV 0,tr,I,II,III,IV 0,I,II,III,IV |
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what is the grading scale for the diagram density grading
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1 to 4 with +/- for in between and trace for less than one
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what is the blue light test
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using the cobalt blue on the slit lamp aim it at the cataract at a 45 degree angle using an optic section thenlook at the depth of the beam penetrates. grade it in % of penetration
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what test is more sensitive than the snellen chart especially for PSC
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contrast sensitivity
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how do you tell is a cataract is immature/mild/presurgical
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it will appear clear on retroillumination
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what are the 4 maturity classifications for a cataract
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immature
moderate mature hypermature |
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what grade would be given to a cataract if there was some opacification on retro and you may be considering surgery
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moderate
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what maturity classification would you give a cataract that is totally opaque, ready for surgery and posterior pole views are difficult
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mature
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what maturity classification would you give to a cataract if it is leaking water out of the lens, and has a wrinkled capsule.
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hypermature
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what type of cataract consists of liquifacation of the cortex and sinking of the nucleus.
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morgagnian cataract
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what are some secondary problems of morganian cataracts
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can lead to phacolytic glaucoma. this is where the capsule breaks open and proteins block the TM
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what has a worse visual prognosis unilateral or bilateral congenital cataract
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unilateral
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with a unilateral congenital cataract what is the key
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to prevent deprivational amblyopia
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what is the typical VA when a recommendation for surgery is made
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20/40, however you can refer at any level
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what two factors are considered when calculating the IOL
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axial length and K's
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what machine helps determine actual retinal VA potential by projecting a small internal backlit eye chart around a cataract
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potential acuity meter
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what VA test consists of a back lit VA chart viewed through a pinhole occluder.
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super pin hole
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what test consists of a laser light that superimposes a grating pattern on the retina that can be changed to determine the potential acuity.
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laser interferometer
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what potential acuity test uses an increasing amount of glare to test for disability glare
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Glare acuity testing
AKA brightness acuity testing |
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while testing for glare recovery test time what is the normal "next best line" time
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30 sec after glare is removed. this increases with age. tends to more of a test for macular photostress rather than cataract
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