A. Pre-teenagers and teenagers - ANS-Ch8-2. ______ are notable applicants for
Orthokeratology.
A. Pre-teens and young adults
B. Presbyopes and teenagers
C. Pre-teens and people approaching 50 years of age
D. Teenagers and people coming near 30 years of age
25. The answer is D.
A the front surface toric lens will show clear mires in all meridians which indicates a spherical
posterior floor. Warped, bitoric and returned floor toric lenses will all show doubtful mires within
the radiuscope indicating that the posterior floor is not round. In the lensometer, bitoric, returned
toric and front surface toric lenses will all show sphero-cylindrical readings. Only the warped
lens will show a round lensometer analyzing. - ANS-25. When verifying the posterior curves of a
rigid fuel permeable now not all the mires are clear
in all meridians. This can arise in all but a:
A. Warped lens
B. Bitoric lens
C. Back surface toric lens
D. Front floor toric lens
50. The solution is C.
When considering sagittal intensity, if the base curves of the lenses are the same, the smaller
the diameter, the shorter the depth. This shows that the 14.Zero diameters are looser than the
14.5 diameters. If the lens diameters are equal, the flatter the base curve, the looser the lens.
Therefore, the eight.8 would be flatter than the eight.Four and confirms that the eight.Eight base
curve with the 14.Zero diameter might maximum loosely suit of the alternatives given. - ANS-50.
Which of the following smooth lenses would you count on to match the loosest on the eye if the
lens
cloth and layout are all of the identical?
A. 8.Four/14.Zero
B. Eight.Four/14.Five
C. 8.8/14.Zero
D. Eight.8/14.Five
54. The answer is B.
,Soft toric lenses are normally made with cylinders of zero.75 D and greater. While not all
sufferers with simplest zero.Seventy five D of cylinder would require a gentle toric lens, this
have to be a starting point for discussion and assessment of the want for a gentle toric lens to
provide the first-class visi_onfor the affected person. - ANS-54. What is the least amount of
cylinder a patient have to have before smooth toric lenses are discussed?
A. 0.25 D
B. 0.Seventy five D
C. 1.25 D
D. 2.00 D
A. 10 - ANS-Ch2-8. A tear spoil-up time (TBUT) of much less than _____ seconds is considered
abnormal.
A. 10
B. 12
C. 14
D. Sixteen
A. 10% - ANS-Ch11-10. Approximately what number of ophthalmologists within the United
States carry out RK?
A. 10%
B. 25%
C. 50%
D. Ninety%
A. Eleven.8mm, 12.0mm - ANS-Ch3-3. In a have a look at achieved at Pacific University,
researchers topographically measured the HVIDs of two hundred corneas and found the
common corneal diameter to be __ and __ to be the most common diameter.
A. 11.8mm, 12.0mm
B. 12.3mm, 12.5mm
C. 12.8mm, 13.0mm
D. Thirteen.2mm, thirteen.5mm
A. 20/eighty. - ANS-Ch7-6. At delivery, the average child has a visible acuity approximating
A. 20/80.
B. 20/40.
C. 20/2 hundred.
D. 20/25.
A. 2 hundred years. - ANS-Ch1-17. Keratoconus, as a circumstance, has been recognized for
about
A. 2 hundred years.
B. 150 years.
C. A hundred years.
,D. 50 years.
A. A huge difference in refractive mistakes among the two eyes. - ANS-Ch8-four. Anisometropia
is
A. A massive distinction in refractive mistakes between the two eyes.
B. An imbalance in eye muscles.
C. A contraindication to contact lens wear.
D. Exceptional managed via custom gentle contact lenses.
A. Air bubbles under the lens. - ANS-Ch4-nine. Prior to insertion, it's far crucial that the hybrid
touch lens be filled with saline to save you any
A. Air bubbles underneath the lens.
B. Facet-adherence.
C. Fluorescein absorption.
D. Off-centering of the lens.
A. Approximate the imply of the pre-operative keratometer readings. - ANS-Ch12-12. Base
curve choice for becoming a spherical or bi-aspheric rigid lens need to
A. Approximate the mean of the pre-operative keratometer readings.
B. Be as flat as feasible.
C. Be the imply of the pre-operative and postoperative keratometer readings.
D. Allow for the application of toric curves.
A. At the eyelid margins. - ANS-Ch2-five. The meibomian glands are located
A. At the eyelid margins.
B. At the limbal margins.
C. In the conjunctiva.
D. Close to the puncta.
A. Begins centrally and actions peripherally to the graft-host interface. - ANS-Ch8-6. Healing of
the graft
A. Starts offevolved centrally and actions peripherally to the graft-host interface.
B. Begins on the graft-host interface and actions centrally.
C. Takes much less than 3 months in maximum instances.
D. Begins on the limbus and moves to the sclera.
A. Both the cornea and the sclera. - ANS-Ch5-5. Corneo-scleral and semi-scleral lenses are
designed to have touchdown zones on
A. Each the cornea and the sclera.
B. The cornea handiest.
C. The limbus most effective.
D. The sclera best.
A. Can variety from 1-ninety years of age. - ANS-Ch8-1. The age of patients requiring a
penetrating keratoplasty
, A. Can range from 1-90 years of age.
B. Is constantly over 40 years vintage.
C. Is not a thing in publish-surgical success.
D. Is constantly underneath 50 years vintage.
A. Design, intently - ANS-Ch3-6. There are techniques inside the ____ and selection of a
custom soft touch lens for patients with irregular corneal astigmatism that may optimize the very
last visible final results. In many cases, these custom designs can ____ approach the visible
first-rate furnished via a nicely-targeted, non-flexing gas permeable lens fabric.
A. Layout, carefully
B. Diameter, somewhat
C. Base curve, rather
D. Flexure, carefully
A. Dilator pupillae - ANS-Ch1-3. The eyelid muscle responsible for closure of the lids is the
A. Dilator pupillae.
B. Orbicularis oculi.
C. Levator superioris.
D. Pectoral blephari.
A. Fluctuating vision due to flexure and wrinkling of the lens. - ANS-Ch12-22. It is vital that a
smooth lens aligns with the principal cornea so as to avoid
A. Fluctuating vision due to flexure and wrinkling of the lens.
B. Peripheral pooling of tears.
C. Mid-peripheral impingement.
D. Corneal hypoxia.
A. 4 - ANS-Ch13-five. Depending at the topographical tool, there can be 500 to 22,000 points
which can be analyzed. That is notably extra than the ______ cardinal points measured by
means of the guide keratometer.
A. Four
B. 9
C. Twelve
D. Fifteen
A. Damage to the attention. - ANS-Ch7-3. Strabismus is
A. Harm to the eye.
B. Misalignment of the eyes.
C. A beauty illness.
D. The pathway of mild through the iris.
A. Intrude with/soreness - ANS-Ch5-10. After insertion of a scleral lens, the wearer tests to
make certainthere aren't any bubbles of air trapped at the back of the lens. Bubbles that
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