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ROUB STUDY GUIDE PRACTICE EXAMINATION 2026 QUESTIONS WITH ANSWERS GRADED A+

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ROUB STUDY GUIDE PRACTICE EXAMINATION 2026 QUESTIONS WITH ANSWERS GRADED A+

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ROUB STUDY GUIDE PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+


● A-Scan Waveform. Answer: Echo pattern interpretation

● Corneal Spike. Answer: First peak in A-scan

● Anterior Lens Spike. Answer: Front crystalline lens echo

● Posterior Lens Spike. Answer: Back crystalline lens echo

● Retinal Spike. Answer: Posterior echo at macula

● Scleral Spike. Answer: Outermost wall echo

● Orbital Fat. Answer: Low echoes behind sclera

● Probe Alignment. Answer: Critical for accurate axial length

● Perpendicular Alignment. Answer: Probe at right angle to retina

● Macula Targeting. Answer: Aiming at foveal center

● Phakic Eye. Answer: Natural lens present

● Pseudophakic Eye. Answer: IOL already implanted

● Aphakic Eye. Answer: No lens present

● Phakic Velocity. Answer: Sound speed in natural lens eye

● Pseudophakic Velocity. Answer: Sound speed adjusted for IOL

● Aphakic Velocity. Answer: Faster sound speed without lens

● Sound Velocity Setting. Answer: 1532 m/s aqueous vitreous default

● Crystalline Lens Velocity. Answer: 1641 m/s for natural lens

● Silicone IOL Velocity. Answer: Reduced velocity for silicone
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