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Identify preoperative risk facto by ps94506

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                            QUIZ       Identify preoperative risk factors to prevent keratectasia

1.	 All	of	the	following	are	terms	used	to	          6.	 Which	of	the	following	is	not	thought	to	         12.	 Which	diagnostic	test	can	make	the	                        17.	 Which	of	the	following	surgical	treatments	
    describe	corneal	thinning	after	refractive	          be	a	possible	risk	factor	for	developing	              clinical	diagnosis	of	keratectasia?                             is	thought	to	halt	the	progression	of	
    surgery	except:                                      keratectasia?                                          a. wavefront aberrometry                                        keratectasia?
    a. keratectasia                                      a. high myopia                                         b. corneal topography                                           a. Intralase enabled keratoplasty
    b. keratoglobus
             Earn 2 hours                                b. gender                                              c. ultrasound pachymetry                                        b. PRK
    c. keratoectasia                                     c. low residual stromal bed thickness                  d. No single test can make the clinical                         c. collagen cross-linking/C3-R
    d. post-LASIK ectasia                                d. low preoperative corneal thickness                     diagnosis of keratectasia.                                   d. conductive keratoplasty
2.	 Keratectasia	is	characterized	by	all	of	the	     7.	 To	reduce	errors	in	estimating	residual	          13.	 Which	of	the	following	is	a	not	a	                         18.	 Which	of	the	following	is	true	concerning	
    following	findings	except:                           stromal	bed	when	performing	LASIK	flap	                nonsurgical	treatment	for	keratectasia?                         corneal	cross-linking	therapy?
    a. progressive astigmatism                           lift	enhancements,	it	is	recommended	to:               a. lowering IOP                                                 a. Application of the vitamin B2
    b. progressive myopia
            Earn 2 hours
                                                         a. perform Orbscan pachymetry                          b. C3-R                                                            (riboflavin) and UVA light causes
    c. progressive loss of BCVA                          b. perform Pentacam pachymetry                         c. spectacles                                                      photopolymerization, increasing the
    d. progressive hyperopia                             c. perform intraoperative pachymetry                   d. contact lenses                                                  rigidity of the corneal collagen.
                                                         d. none of the above                                                                                                   b. The epithelium must be removed to
3.	 The	etiology	of	keratectasia                                                                           14.	 Which	of	the	following	contact	lenses	is	
                                                                                                                                                                                   perform the procedure.
    a. is well established in the current            8.	 The	single	most	important	factor	in	the	               not	usually	used	to	treat	keratectasia?
                                                                                                                                                                                c. It may be combined with Intacs to
       literature.                                       diagnosis	of	corneal	ectasia	is:                       a. SynergEyes hybrid lens
                                                                                                                                                                                   enhance the effect.
    b. involves complex genetic issues not fully         a. pachymetry                                          b. piggyback fit
                                                                                                                                                                                d. both a & c
       understood.                                       b. manifest refraction                                 c. Acuvue Oasys
    c. involves complex corneal biomechanical            c. topography                                          d. SoClear corneal-scleral lens                            19.	 Which	of	the	following	statements	are	true	
       issues not fully understood.                      d. slit lamp examination                                                                                               about	keratectasia?
                                                                                                           15.	 Which	of	the	following	is	not	a	surgical	
    d. b & c                                                                                                                                                                    a. It can be caused by RK, PRK or LASIK.
                                                     9.	 Which	of	the	following	is	not	a	symptom	               treatment	for	keratectasia?
                                                                                                                                                                                b. The incidence continues to increase
4.	 Keratectasia	is	known	to	occur	after	all	of	         of	corneal	ectasia?                                    a. intacs
                                                                                                                                                                                   today.
    the	following	types	of	surgery	except:               a. flashes and floaters                                b. radial keratotomy
                                                                                                                                                                                c. It always has identifiable preoperative
    a. LASIK                                             b. decreased BCVA                                      c. CK
                                                                                                                                                                                   risk factors.
    b. PRK                                               c. monocular diplopia                                  d. Penetrating keratoplasty
                                                                                                                                                                                d. It can be prevented if properly screened
    c. conductive keratoplasty                           d. none of the above                              16.	 Which	of	the	following	is	not	a	primary	                           for.
    d. radial keratotomy                             10.	 Which	of	the	following	is	characteristic	of	          goal	when	using	Intacs	to	treat	
                                                                                                                                                                           20.	 Which	of	the	following	may	lead	to	
5.	 Which	external	factor	is	not	a	reason	                pellucid	marginal	degeneration?                       keratectasia?
                                                                                                                                                                                a	decrease	in	the	future	incidence	of	
    believed	to	trigger	keratectasia,	according	          a. thinned central pachymetry                         a. improve UCVA
                                                                                                                                                                                keratectasia?
    to	the	genetic	and	biomechanical	                     b. with-the-rule astigmatism                          b. improve BCVA
                                                                                                                                                                                a. improved understanding of corneal
    theories?                                             c. SRAX topography                                    c. improve ability to fit contact lenses
                                                                                                                                                                                   biomechanics
    a. soft contact lenses                                d. peripheral neovascularization                      d. reduce irregularity of corneal
                                                                                                                                                                                b. improved understanding of genetic
    b. GP contact lenses                                                                                           astigmatism
                                                     11.	 All	of	the	following	are	devices	that	can	                                                                               components
    c. eye rubbing                                        measure	elevation	topography	directly	                                                                                c. improved diagnostic testing
    d. corneal surgery                                    except:                                                                                                               d. all of the above
                                                          a. Orbscan II
                                                          b. Pentacam HR
                                                          c. Visante
                                                          d. Gallilei


PCON January 2008
Identify preoperative risk factors to prevent keratectasia                                               Mail	or	fax	your	quiz	answer	sheet	to	
by William J. Tullo, OD, FAAO                                                                            Vindico Medical Education, PO Box 36, Thorofare, NJ 08086
COPE Course ID: 21019-RS                                                                                 fax: (856) 384-6680
This course is jointly sponsored by PCON, the State University of New York State College of              Those who submit a quiz scoring at least 70% along with their $30 payment will be sent CE certificates
Optometry and Vindico Medical Education. It is COPE-approved for 2 continuing education credits.         within 8 weeks. This test is valid until December 31, 2008.

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