Vienna: Refractive Surgery Didactic Course (Part 1) - Multiple Choice Questions

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* 1. Name and/or Badge ID Number:

D. Siganos
Patient selection

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* 2. Following MYOPIC LASIK, which is true?

Goldmann applanation tonometry measurements overestimate IOP

Goldmann applanation tonometry measurements underestimate IOP

Goldmann applanation tonometry measurements are not affected

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* 3. Accurate tonometry readings following LASIK can be obtained by:

Goldmann applanation tonometry

Air puff tonometry

Pascal tonometry

Ultrasonic pachymetry

All of the above

None of the above

F. Ribeiro
Corneal topography

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* 4. The keratometric index is used because the corneal power is estimated only by measurements of the anterior corneal surface

Yes

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* 5. The keratometric index uses as a ratio between anterior and posterior corneal surface the value 0,882

Yes

G. Kymionis
Lasers in refractive surgery

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* 6. The depth of ablation for an excimer laser is related with the?

Optical zone

Fluence of the laser

Ablation rate

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* 7. In excimer laser ablation of the cornea, the thermal stress depends on:

Fluence

Effective repetition rate

Total ablation

All of the above

C. Roberts
Biomechanics of the cornea

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* 8. What are the hallmarks of the biomechanical response to laser refractive surgery?

Anterior central flattening and peripheral steepening

Anterior central steepening and peripheral flattening

Anterior central flattening and posterior central flattening

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* 9. Which of the following is the greatest source of artifact in Goldmann tonometry?

Anterior surface curvature

Corneal biomechanical properties

Corneal thickness

M. Morral
IOL calculation strategies

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* 10. To improve the accuracy of IOL power calculation in long eyes

US biometry is recommended to locate the staphyloma

Targeting to mild hyperopia is recommended to avoid myopic errors

Wang-Koch axial length adjustment should be used for most vergence formulae

Wang-Koch axial length adjustment should be used in artificial intelligence approaches

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* 11. When comparing different vergence formulae performance

The Barrett Universal II seems the least affected by extreme biometric parameters

SRK/T is the most reliable for any type of eye

The Hoffer Q formula should always be used in short eyes

The WK adjustment caused an overcorrection of myopic outcomes in long eyes

R. Applegate
Quality of vision evaluation

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* 12. Considering the correlation between high order aberrations and visual acuity presented by Dr. Applegate:

For photopic high contrast acuity there is little to no correlation between acuity

and the high order aberrations

The correlation between high order aberrations and visual acuity is best for mesopic

low contrast acuity

Photopic high contrast acuity is not as sensitive to minor changes high order aberrations as mesopic low contrast acuity

Answers a, b and c are correct

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* 13. As the pupil dilates from approximately 3 mm to 6 mm in diameter:

Higher order aberrations increase in the normal non-surgical eye

In the normal non-surgical eye photopic high contrast acuity decreases

slightly by around 3 letters

Higher order aberrations decrease in the normal non-surgical eye

Answers a and b are correct