Vienna: Refractive Surgery Didactic Course (Part 3) - Multiple Choice Questions Survey

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* 2. Which of the following is not a risk factor for post surface ablation haze?

Myopia greater than 6 diopters

Young patients

Delayed closure of the epithelial defect

The use of non steroidal anti inflammatory drugs

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* 3. Which of the following patients is not an ideal candidate for surface ablation?

Previous corneal transplant

Previous aborted LASIK due to buttonhole flap

Previous conductive keratoplasty

Diagnosis of form fruste keratoconus

J. Alio
Topo and WF guided ablations

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* 4. Wavefront information is very useful for the refractive surgeon because:

It offers a much more accurate evaluation of the refraction of the eye

It offers information on the quality of the optical system of the eye pre and postoperatively

This information is important for the decision – making process about the type of refractive surgical procedure to perform, both corneal and intraocular

All the previous answers are correct

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* 5. The so-called aberration free (or optimized) Excimer laser treatments:

Are based on the preoperative evaluation of the eye aberrometry

Aim not to change the preoperative spherical aberration of the eye following the Excimer laser correction, especially not to induce spherical aberration with the corneal refractive procedure

Try to create an aberration free cornea

Are only valid in myopia

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* 6. Corneal wavefront treatments and topoguided excimer laser treatments should be indicated when:

The total eye aberrations are high

The total corneal aberrations are high and outside the proportions that could be balanced by the intraocular aberrations

They are better used in every case, regardless of the preoperative aberrations of the eye

They are better performed under a Lasik flap than by surface ablation

V. Katsanevaki
LASIK complications

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* 7. The treatment of DLK stage 3 consists of:

Flap lift and irrigation

Wait and see patient every day

Prednisolone eye drops every hour

Both A and C is correct

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* 8. Select the false statement: Flap folds…

Should be treated immediately

Can create irregular astigmatism

Should not be treated too early as they sometimes resolve

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* 9. How to avoid keratectasia?

Exclude corneas with atypical topography

Leave a stromal bed of at least 250µ even after retreatment

Perform LASEK/PRK or phakic IOL implantation in borderline cases

All of the above

T. Kohnen
Incisional corneal procedures

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* 10. On which principle does laser thermal keratoplasty work?

It is a cryoablative procedure

It is a coagulative procedure

It is a laser ablative procedure

It works by radiating the cornea with UV light

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* 11. Incisional surgery using limbal relaxing incisions are used for correcting astigmatism up to:

-1.00 D

-2.00 D

-4.00 D

-6.00 D

R. Bellucci
LASIK: surgical technique

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* 12. The diameter of the Microkeratome flap is affected by:

The corneal curvature

The corneal diameter

Both curvature and diameter

Neither curvature nor diameter

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* 13. After the cut, the flap is “taco” folded for:

Better late repositioning

Protection of the hinge from ablation

Lower bacterial contamination

Lower dehydration

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* 14. The femtosecond laser flap is better than the MK flap because

Better postop sealing

Better postop vision

Steady cut depth

Lower epithelial ingrowth

B. Cochener
Small lenticule extraction

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* 15. Theoretically, the key advantages of Smile are:

Better respect of ocular Surface than Lasik

Maintenance of corneal biomechanics as a prevention of corneal ectasia

Easy enhancement by the cut of a new lenticule

Less volume of tissue removal than Lasik

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* 16. In practice, clinical evidence demonstrate in comparison to Lasik:

Better visual performances

Less dry eye sydrome at 6 month postoperative

Less dry eye syndrome at 12 months postoperative

Less sensitive to decentration

D. Epstein
Cross-linking and refractive surgery

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* 17. For which of the following ranges of myopia can the best outcomes be expected in LASIK?

–5.00D to –7.50D

–1.50D to –5.00D

–8.00D to –10.50D

–6.00D to –8.00D

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* 18. Based on published and clinical experience, one would anticipate the worst outcome when performing hyperopic LASIK on an eye with the following preoperative refraction:

+1.50D

+3.25D

+5.50D

+3.75D

D. Touboul
Intracorneal ring segments

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* 19. The best candidate for intracorneal ring implantation for keratoconus is:

Cornea with central opacities

Peripheral corneal thickness of less than 400 µ

Clear central cornea with peripheral corneal thickness > 450 µ

Hydrops

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* 20. In intracorneal ring surgery:

Three different diameters of rings are currently available :

The arc length and the ring thickness are positively correlated with the corneal flattening :

Symetrical implantation is the best way to decrease the comatic aberrations :

Can be combined with other corneoplastic surgeries simultaneously or in a sequential strategy:

Results are as well predictable as in excimer laser refractive surgery:

G. Grabner
Intrastromal inlays (biological and synthetic)

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* 21. Select the true statement:

The theory for accommodation (and the development of presbyopia) - that is scientifically validated is:

the Schachar theory

the Helmholtz theory

the Coleman (catenary) theory

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* 22. The correction of presbyopia is currently NOT possible by:

Changing the shape of the cornea

Implantation of multifocal IOLs

Prescription of reading spectacles

Modification of the vitreous body

Monovision (with contact lenses or IOLs

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* 1. Name and/or Badge ID Number:

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* 2. Which of the following is not a risk factor for post surface ablation haze?

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* 3. Which of the following patients is not an ideal candidate for surface ablation?

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* 4. Wavefront information is very useful for the refractive surgeon because:

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* 5. The so-called aberration free (or optimized) Excimer laser treatments:

Question Title

* 6. Corneal wavefront treatments and topoguided excimer laser treatments should be indicated when:

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* 7. The treatment of DLK stage 3 consists of:

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* 8. Select the false statement: Flap folds…

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* 9. How to avoid keratectasia?

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* 10. On which principle does laser thermal keratoplasty work?

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* 11. Incisional surgery using limbal relaxing incisions are used for correcting astigmatism up to:

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* 12. The diameter of the Microkeratome flap is affected by:

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* 13. After the cut, the flap is “taco” folded for:

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* 14. The femtosecond laser flap is better than the MK flap because

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* 15. Theoretically, the key advantages of Smile are:

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* 16. In practice, clinical evidence demonstrate in comparison to Lasik:

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* 17. For which of the following ranges of myopia can the best outcomes be expected in LASIK?

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* 18. Based on published and clinical experience, one would anticipate the worst outcome when performing hyperopic LASIK on an eye with the following preoperative refraction:

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* 19. The best candidate for intracorneal ring implantation for keratoconus is:

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* 20. In intracorneal ring surgery:

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* 21. Select the true statement:The theory for accommodation (and the development of presbyopia) - that is scientifically validated is:

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* 22. The correction of presbyopia is currently NOT possible by:

* 21. Select the true statement:

The theory for accommodation (and the development of presbyopia) - that is scientifically validated is: