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OKAP review
Ophthalmology - Quick associations
| Question | Answer |
|---|---|
| Christmas Tree Cataract | Myotonic Dystrophy |
| Posterior Embryotoxin | Axenfield-Reiger Syndrome |
| Concave Iris Configuration | Pigment Dispersion Syndrome |
| SLT targets... | Intracellular Melanin |
| ALT target... | Junction of anterior (nonpigmented) and posterior (pigmented) trabecular meshwork |
| Secondary open-angle glaucoma with high prevalence of narrow angles | Pseudoexfoliation Syndrome |
| Anteriorly displaced schwalbe's line | Posterior embryotoxin |
| Decreased mean deviation index (MDI) on HVF testing | Glaucomatous progression Progression of cataract other media opacities |
| Compare current visual field test with baseline | Event based analysis |
| Trend in values/summary statistics over time provides estimation of rate of progression | Trend based analysis |
| Peripheral anterior synechiae extends past schwalbe | ICE syndrome |
| Liquified lens particles leak through intact capsule causing elevated IOP | Phacolytic glaucoma |
| What reliability index can be high in automated static perimetry, although the test still may be considered accurate | False negatives |
| Post-op trab presents with elevated IOP to 50's, a low bleb, a shallow anterior chamber, and an attached retina | Malignant glaucoma/aqueous misdirection |
| Angle closure after PRP or scleral buckle | Ciliary body edema or uveal effusion syndrome |
| Effects of supine position on IOP | Increased IOP |
| Factors that decrease IOP | Pregnancy Aerobic Exercise Alcohol and Marijuana (transient) |
| Wavelength for transscleral CPC | 810 nm |
| Corneal characteristics that increase the risk of development of glaucoma in patients who are glaucoma suspects | low central corneal thickness (CCT) and low corneal hysteresis |
| What complication of cyclodestruction is unique to endoscopic cyclophotocoagulation | Risk of endophthalmitis |
| Cause(s) of rim artifact on HVF? | Patient head slides back from forehead rest during testing Lens decentered |
| Causes of cloverleaf pattern on HVF? | Patient loses attention and stops responding to stimuli after the early part of the test Malingering |
| Causes of white scotoma on HVF? | high false-positive errors that artifactually raise the threshold of the field |
| Cause of generalized depression artifact on HVF | inappropriate corrective lens |
| How do high FP rates >15% affect visual field test? | Masks or minimizes an actual scotoma resulting in unreliable test When extremely high --> impossibly high threshold values/impossibly high retinal sensitivity |
| What happens to MDI (mean deviation index) when glaucoma progresses | MDI (decreases) |
| Pattern deviation represents | localized loss after correcting for overall decreases in sensitivity ( |
| What defines visual field as abnormal | presence of a cluster of at least 3 abnormal points (P < 5%) on the pattern-deviation plot, with at least 1 of those points with P < 1% |
| shows deviations from age-corrected normal sensitivities; | total-deviation plot, |
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