NCLE Test Questions And Answers Latest Update 2023/2024 (Graded A+)

NCLE Test Questions And Answers Latest Update 2023/2024 (Graded A+). Which of the following prescriptions indicates against-the-rule astigmatism? a)-4.50 +1.00 x75 b)-4.50 +1.00 x 180 c)-4.50 -1.00 x 165 d)4.50 -1.00 x 180 - Answer a)-4.50 +1.00 x75 When a keratometer is being calibrated, which of the following targets will provide the most reliable result? a)the single-cut anterior surface of a high-plus lens b)a perfectly flat highly polished mirror c) a set of steell balls of known radii d)the unfinished posterior surface of a low-minus lens - Answer c) a set of steel balls of known radii Inadequate movement of a soft lens can be corrected by using a lens that a) has a steeper base curve b) has a smaller diameter c) has a larger diameter d) has a higher water content - Answer b)has a smaller diameter A long-term, successful, hydrogel contact lens wearer suddenly develops dry eyes. Which of the following is most likely to cause this problem? a) Use of oxidative solution b) use of rewetting drops c) use of anti-histamines d) Wearing of lenses in the wrong eyes - Answer c) use of anti-histamines During slit-lamp evaluation, on upward gaze, a patient's soft contact lenses move 0.5 to 1mm when the patient blinks. These lenses are: a) a good fit b) too loose c) too tight d) too large - Answer a) a good fit A new daily wearer of soft lenses returns for the first follow up visit with itching, burning, injected eyes. The most likely cause of these problems is: a) solution reaction b) giant-cell papillary conjunctivitis c) a lens fit that is too loose d) inability to wear soft lenses - Answer a) solution reaction Which of the following is the mode of slit-lamp illumination used to view the early stages of microcystic edema? a) Retroillumination b) Direct illumination c) Parrallelpiped d) Oscillation - Answer a) Retroillumination Which of the following changes is best able to improve oxygen transmissibility to a patient's cornea? a) Increasing tear exchange b) Increasing Dk c) Increasing optical zone diameter d) Increasing CN bevel - Answer b) Increasing Dk In using fluorescein to evaluate the fit of a rigid lens of 9.0mm diameter on a typical eye, a correct statement is that: a) apical touch with pooling in the PPC curve area is preferred b) apical toxicity may not be obvious c) apical pooling with edge touch is recommended d) apical area, mid-peripheral area, and the lens edges should be assessed - Answer d) apical area, mid-peripheral area, and the lens edges should be assessed Which of the following changes would improve a rigid contact lens fit that shows sluggish movement after 1 hour of wear? a) Add hyperflange edge treatment b) Reduce overall diameter c) Decrease center thickness d) Increase overall diameter - Answer b) Reduce overall diameter Moving a +7.50 RX from the spectacle plane to the corneal plane will require: a) no change in power b) more minus power c) more plus power d) less plus power - Answer c) more plus power A fluorescein pattern that has a black area over the corneal apex and a diffuse green area in the periphery normally indicates: a) flat fit b) steep fit c) normal fit d) tight fit - Answer a) flat fit IPC's are used to: a) provide a transition between the peripheral and base curves b) reduce edge thickness and lens mass c) increase the optical zone d) smooth the lens edge - Answer a) provide a transition between the peripheral and base curves A toric soft lens with an RX of -2.00 -1.25 x 120 has the axis resting at the 5 o' clock position. What should the new axis be when the lens is ordered? a) 90 degrees b) 105 degrees c) 135 degrees d) 150 degrees - Answer a) 90 degrees Upon initial insertion of a GP lens, the patient complains about flare. To correct this problem, the fitter should choose a lens with a/an: a) increased base curve b) increased optical zone c) decreased optical zone d) flattened base curve - Answer b) increased optical zone Which curve would a fitter modify to allow more tear flow under the edge of a rigid lens? a) Posterior peripheral curve b) Optical curve c) Anterior peripheral curve d) Anterior central curve - Answer a) Posterior peripheral curve If a well fitted diagnostic lens has a -3.00 power and the over-refraction at 12mm is - 2.00, the correct lens power to order is: a) -4.50 b) -4.75 c) -5.00 d) -5.25 - Answer c) -5.00 For a patient with 1.25D of with-the-rule astigmatism, who is active outdoors and who operates heavy construction equipment, the most appropriate type of contact lens would be: a) soft toric lenses b) spherical gas permeable lenses c) spherical soft lenses d) toric gas permeable lenses - Answer a) soft toric lenses Which of the following instruments is most commonly used to measure the diameter of the optical zone of a contact lens? a) contactometer b) radiuscope c) measuring magnifyer d) lensometer - Answer c) measuring magnifyer According to the US Food and Drug Administration, the maximum time allowable for continuous wearing of silicone hydrogel lenses is: a) 7 days b) 14 days c) 21 days d) 30 days - Answer d) 30 days When ridig lenses are received from the manufacturer, which of the following instuments is not needed for inspection and verification? a) biomicroscope b) radiuscope c) lensometer d) measuring magnifyer - Answer a) biomicroscope When using a lid manipulation to assist in "popping" a rigid lens off the eye, the wearer should first make sure that the: a) lower lid meets the lower part of the cornea b) lens is resting on the cornea, where the fissure is widest c) edge of the lens has been located with a penlight d) lens is resting on the sclera, where the tissue is widest - Answer b) lens is resting on the cornea, where the fissure is widest The most effective way to remove a soft contact lens that has adhered to the cornea is to: a) firmly press the lids against the sclera with fingertips, release, then blink the lid closed firmly b) gently pinch the lens directly off the cornea with clean fingertips NCLE Practice Test Questions And Answers c) affix a suction cup to the center of the lens and pull it straight away, using steady pressure d) irrigate the eye with lubricant until the lens moves freely, then remove as usual - Answer d) irrigate the eye with lubricant until the lens moves freely, then remove as usual Following the fitting and dispensing of any continuous wear contact lenses, it is advisable to see the patient: a) the following morning b) in 2 weeks c) within 2 days d) in 1 week - Answer a) the following morning The fitter can differientiate between a back toric lens and bitoric lens by utilizing a: a) radiuscope b) keratometer c) profile analyzer d) lensometer - Answer a) radiuscope The instrument designed primarily to measure the base curve of a contact lens is the: a) keratometer b) radiuscope c) lensometer d) ophthalmascope - Answer b) radiuscope The most frequently used corneal contact lenses for patients with keratoconus are: a) specially designed cone lenses b) bandage contact lenses c) scleral lenses d) soft contact lenses - Answer a) specially designed cone lenses The majority of continuous wear hydrophillic soft lenses are composed of: a) plymethyl-methacrylate b) fluorosilicone acrylate c) silicone acrylate d) silicone hydrogel - Answer d) silicone hydrogel A drooping of the upper lid is called: a) entropion b) strabismus c) ptosis NCLE Practice Test Questions And Answers d) nystagmus - Answer c) ptosis A spherical rigid contact lens has: a) a ballast system to accommodate rotational effects b) one continuous curve throughout the optical zone c) correction for approximately 1.5D of presbyopia d) a back surface curve that flattens progressively - Answer b) one continuous curve throughout the optical zone Which layer of the tear film helps to prevent evaporation? a) vitreous layer b) lipid layer c) mucin layer d) aqueous layer - Answer b) lipid layer Soft lenses should be considered when the patient: a) wants the best possible vision at all times b) is concered with cost c) desires intermittent wear d) has a small palpebral fissure - Answer c) desires intermittent wear Which of the following characteristics is most likely to be exhibited by a diabetic contact lens patient? a) exophthalmos b) blepharitis c) fluctuating vision d) poor blink habits - Answer c) fluctuating vision A rigid contact lens used to enhance color vision in patients who have color deficiencies is: a) light green b) dark red c) medium yellow d) dark blue - Answer b) dark red Upon completion of a contact lens fitting, the best way to provide additional information to the patient on fees, care systems, and wearing schedules is by: a) directing the patient to consult online reference material b) discussing such matters with the patient by telephone, as the need arises c) supplying the patient with pamphlets and office handouts d) asking the patient to bring up any questions at the next regular visit - Answer c) supplying the patient with pamphlets and office handouts NCLE Practice Test Questions And Answers A patient complains of pain upon lens insertion, with excessive tearing and blurry vision. Fluorescein evaluation reveals zigzag linear corneal staining. These signs and symptoms are most likely due to a: a) tight-fitting lens b) solution sensitivity reaction c) loose-fitting lens d) foreign body under the lens - Answer d) foreign body under the lens The Fairness to Contact Lens Consumers Act covers: a) GP lenses only b) specialty lenses only c) disposable lenses only d) all types of lenses - Answer c) disposable lenses only When a soft diagnostic lens is too flat, it may demostrate: a) limited movement b) impingement on the limbus c) scleral indentation d) edge standoff - Answer d) edge standoff Given the following "K" readings: 41.87@055/43.62@145 What optical condition does the patient have? a) hyperopia b) with-the-rule astigmatism c) against-the-rule astigmatism d) oblique astigmatism - Answer d) oblique astigmatism Recentering of a rigid contact lens should always be performed by manipulation of the lens: a) through the upper or lower lids b) with a sterile cotton-tipped swab c) directly with the index fingers d) with a suction cup - Answer a) through the upper or lower lids Which of the following instruments can be used to measure both corneal curvature and the base curve of a rigid contact lens? a) lensometer b) biomicroscope c) keratometer d) radiuscope - Answer c) keratometer NCLE Practice Test Questions And Answers The optical zone width of a GP lens can be assessed with a: a) magnifier with a millimeter grid b) radiuscope c) topogometer d) diameter v-gauge - Answer a) magnifier with a millimeter grid In order to check the front vertex power of a contact lens, the lens should be placed in which of the following positions relative to the aperture of the lensometer a) concave side to the aperture b) 5 mm in front of the aperture c) peripheral curve opposite the aperture d) convex side to the aperture - Answer d) convex side to the aperture It is recommended that after successful initial follow-up visits, the continuous/extended wear contact lens patient should be seen: a) monthly, late in the day after a full week of wear b) semiannually, as soon as possible after awakening c) annually, when the lenses are ready to be replaced d) every 18 months, even if no problems are obvious - Answer b) semiannually, as soon as possible after awakening Fluorescein that has been instilled into the eye is best illuminated by using: a) sclerotic scatter b) a green filter c) cobalt blue filter d) a pen light - Answer c) cobalt blue filter A patient complains of reduced vision after a well-fitted rigid lens has been polished by the fitter. The fitter should: a) check the quality of all lens parameters b) repolish the lens c) re-edge the lens d) reduce the lens diameter - Answer a) check the quality of all lens parameters When an office visit is documented in a patients records, the final notation on the chart should be the: a) patients "K" readings b) patients overall satisfaction with the contact lenses c) recommended time until the patients next office visit d) results of the patients visual acuity assesment - Answer c) recommended time until the patients next office visit NCLE Practice Test Questions And Answers Bedewing of the cornea occurs on which of the following corneal layers? a) Bowman's membrane b) Epithelium c) Endothelium d) Descemet's membrane - Answer c) Endothelium Reducing the diameter of a minus lens results in: a) increased center thickness b) a reduction in weight c) a steeper base curve d) decreased center thickness - Answer b) a reduction in weight To ensure follow-up recall appointments, it is important to: a) give an appointment a year in advance b) rely on the patient to schedule the follow up appointments c) send a note saying that it is not possible to replace a lens unless an appointment is scheduled in advance d) reinforce the need for follow up care beginning with the initial contact lens fitting appointment - Answer d) reinforce the need for follow up care beginning with the initial contact lens fitting appointment On a follow up visit, a 20 year old myopic patient reports difficulty with near vision, although distance vision is excellent. This patient is most likely: