Knowledge Self-Assessment: Eyeglass

Knowledge

Self Assessment

Eyeglass Low Vision

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1) What is the most effective way for an optician to stop the spread of infection in the dispensary?(Required)

A: Clean all frames with undiluted bleach.

B: Clean all equipment weekly with a 70% alcohol solution.

C: Wash hands thoroughly with soap and water.

2) Which instrument does an optician use to measure monocular pupillary distance in a patient with anisometropia?(Required)

A: Tonometer

B: Pupilometer

C: Keratometer

3) A patient comes into the dispensary to pick up her new task-specific office eyeglasses. Her Rx is as follows:

OD +1.25 −0.75 × 080
OS +1.50 −0.50 × 120
Add OU +2.50

Her office eyeglasses were made with the following Rx:

OD +2.50 −0.75 × 080
OS +2.75 −0.50 × 120

When the optician is dispensing the eyeglasses to the patient, where should he ask her to look to confirm her visual acuity?(Required)

A: At a computer monitor at arm’s length.

B: At a reading card at 30 cm (12 in).

C: At a Snellen chart at 6 m (20 ft).

4) A 63-year-old patient currently using OU −2.50 single vision distance eyeglasses has recently been diagnosed with cataracts OU. He removes his eyeglasses to read and has no astigmatism that needs correction. He is having cataract surgery in 4 weeks. He was given a pamphlet of information about cataract surgery that included descriptions of different types of intra-ocular lenses (IOL).

He asks the optician at the doctor’s office to help him identify an IOL that will improve his distance vision and maintain his ability to read. Which of the 3 IOL options would be preferred for this patient?(Required)

A: Distance intra-ocular lens

B: Multifocal intra-ocular lens

C: Toric intra-ocular lens

5) When should opticians wash their hands to maintain a hygienic dispensary environment?(Required)

A: After using hand sanitizer or disinfecting wipes.

B: Before using public washroom facilities.

C: After coughing or sneezing.

6) What must an optician do after calibrating a pupilometer, before measuring a patient’s pupillary distance with it?(Required)

A: Set the pupilometer to the near pupillary distance setting.

B: Disinfect the pupilometer with an alcohol wipe.

C: Set the occluder to cover the right eye.

7) An optician is dispensing new eyeglasses to a patient. They notice the temple tips are a bit long behind the patient’s ears. What equipment will the optician use to adjust the eyeglasses?(Required)

A: Frame warmer

B: Needle-nose pliers

C: Distometer

8) A patient visits his optician, Clinton, to order new eyeglasses. He has a low budget. He asks Clinton for the cheapest option that will be appropriate for his Rx, which is:

OD +6.50 −0.50 × 180
OS +6.00 −0.75 × 175

What lenses should Clinton recommend?(Required)

A: 1.60 high-index aspheric lenses with an anti-reflective coating.

B: CR-39 plastic lenses with a scratch-resistant coating.

C: Crown glass lenses with an anti-reflective coating.

9) A 20-year-old patient has the following Rx:

OD +2.00 −1.00 × 180
OS +1.75 −0.75 × 170

She asks her optician what kind of vision problem she has. How should the optician define her refractive condition?(Required)

A: Mixed astigmatism

B: Compound hyperopic astigmatism

C: Presbyopic astigmatism

10) The optician receives a pair of completed eyeglasses from the lab. The eyeglasses were ordered with the following parameters:

OD −4.00 −0.50 × 180
OS −4.50 −0.25 × 175
Pupillary distance 28 mm/31 mm
Optical centre height OD 21 mm, OS 21 mm

The optician measures the eyeglasses using the lensometer and finds that the OD pupillary distance is 30.5 mm. How must the optician proceed?(Required)

A: Return the job to the lab because the pupillary distances do not match the order.

B: Verify the eyeglasses using the standard tolerance chart.

C: Call the patient to notify them that their new eyeglasses are ready.

11) What type of low-vision aid should an optician recommend to a patient with Parkinson’s disease?(Required)

A: High-powered reading eyeglasses.

B: A hand-held illuminated magnifier.

C: A folding pocket magnifier.

12) A patient tells her optician about a problem with her eyeglasses. The anti-reflective coating is badly crazed and she is quite upset about the appearance of her lenses. She has had the eyeglasses for only a few months. She works as a server at a local restaurant patio during the summer and is upset because she mostly wears her sunglasses for work and is always careful to leave her Rx eyeglasses safely in her car, so she is not sure how they have become so badly damaged. How must the optician handle the situation?(Required)

A: Order new lenses with a better-quality anti-reflective coating so that this does not happen again.

B: Explain that excessive heat can damage the anti-reflective coating and that the patient must not leave her eyeglasses in a hot vehicle.

C: Tell the patient that this will continue to happen because of her lifestyle and recommend she try a lens without an anti-reflective coating.

13) What is the minimum lens blank size (MBS) required for the following measurements?

A 50 mm
Distance between lenses (DBL) 18 mm
Effective diameter (ED) 56 mm
Patient’s binocular pupillary distance (PD) 59 mm(Required)

A: 64 mm

B: 67 mm

C: 71 mm

14) Edward is a 55-year-old patient with 2-year-old eyeglasses. He has a new Rx and wants to purchase new eyeglasses. Edward’s file is quite long. His regular optician is on vacation. Salvatore is a new optician at the dispensary. Edward tells Salvatore his current eyeglasses had to be redone a couple of times to achieve satisfactory vision.

What should Salvatore prioritize in the patient file to be able to avoid the same problem with Edward’s new eyeglasses?(Required)

A: The chief complaint history.

B: The medical history.

C: The medication history.

15) A patient with age-related macular degeneration purchased a hand-held illuminated magnifier his optician recommended. Since he picked it up 2 weeks ago it has been working well.

Today the patient is seeing his optician for a 2-week follow-up, and they agree that his selected low-vision aid is meeting his needs. When should the optician recommend the patient return for his next follow-up appointment?(Required)

A: 4–6 weeks

B: 1 year

C: 5 years

16) A patient works in the flight control room in an airport. He sits in front of 3 large monitors, at a distance of about 1 m, for most of his working hours. His Rx is:

OD −6.00
OS −4.00
Add OU +2.50

He wants eyeglasses that give him the best vision possible while he is working. Which of the following lens powers should his optician recommend?(Required)

A: OD −6.00
OS −4.00
Add OU +2.50

B: OD −6.00
OS −4.00

C: OD −5.00
OS −3.00

17) A patient is a summertime lifeguard at an outdoor pool. His Rx is:

OD −1.00 −0.50 × 030
OS −1.25 −0.25 × 045

Which eyeglasses should his optician recommend for use while at work?(Required)

A: Rx polycarbonate eyeglasses.

B: Rx sunglasses with UV protection.

C: Rx eyeglasses with anti-reflective coating.

18) A patient was recently diagnosed with open-angle glaucoma. Which test should the optician use to determine whether the condition has affected the patient’s vision?(Required)

A: Visual acuity

B: Perimetry

C: Topography

19) What tool does an optician use to measure the base curve of an eyeglass lens?(Required)

A: Radiuscope

B: Lens clock

C: Lensometer

20) What process can the optician implement in their practice to reduce infection hazards to both the optician and the patient?(Required)

A: Disinfect optical tools after each patient.

B: Clean all frames with undiluted bleach after patients or staff handle them.

C: Disinfect patients’ skin with iodine before they try on frames.

21) A patient visits the dispensary to get new eyeglasses. He likes his current titanium frames but complains about the right lens popping out occasionally. He asks if it could be repaired until his new pair came in. Upon inspection, the optician notes that the screws are tight, but there is a small gap between the top of the frame and the lens.

What tool should the optician use to adjust the frame to decrease the likelihood of the lens popping out?(Required)

A: Lens liner

B: Heater

C: Threadlocker, such as Loctite

22) A patient sees his optician for a new pair of eyeglasses. His Rx is OU –1.00. He wants the very best lenses in the new designer frame he has chosen, and he tells the optician that cost is not a factor. He wears his eyeglasses only for his work as a limousine driver. He spends a lot of time driving, especially at night. He wants to improve his vision as much as possible. What lens should the optician recommend?(Required)

A: 1.74 high-index lenses with anti-reflective coating.

B: 1.67 high-index lenses without anti-reflective coating.

C: CR-39 plastic lenses with anti-reflective coating.

23) Which equipment does an optician use to evaluate the pupillary distance of existing eyeglasses?(Required)

A: Pupilometer and ruler.

B: Lens clock and ruler.

C: Lensometer and ruler.

24) A patient has an eyeglass Rx of OU –4.25. Which of the following lens materials should the optician choose to give the patient the best Abbe value?(Required)

A: CR-39 plastic

B: Polycarbonate

C: 1.74 high-index

25) Susan has returned to her optician, John, complaining about double vision with her new eyeglasses. Her eyeglass specifications are as follows:

Frame measurements
A 52 mm
B 48 mm
Distance between lenses 17 mm

Eyeglasses Rx
OD +4.00 −0.50 × 090
OS +2.25 −0.75 × 085

Binocular pupillary distance 64 mm

Susan tells John she had a similar problem with her previous eyeglasses about 2 years ago. The problem was eventually solved by her previous optician. John verifies the eyeglasses and determines that the Rx and pupillary distance are correct.

Which of the following should John verify next to resolve the problem?(Required)

A: Lens optical centre heights.

B: Whether right and left lenses have been switched.

C: Index of refraction of the lenses.

26) Which structure in the eye provides the most total refractive power?(Required)

A: Retina

B: Cornea

C: Crystalline lens

27) How must the optician adjust the frame of finished eyeglasses before placing them on the patient?(Required)

A: Adjust the frame to add more pantoscopic tilt.

B: Adjust the frame to standard bench alignment.

C: Adjust the frame to include more face form.

28) What pupillary distance measurement would allow the optician to align the patient`s pupils in the centre of the lens in a frame with the following measurements?

A 52 mm
B 38 mm
Distance between lenses 16 mm(Required)

A: 54 mm

B: 60 mm

C: 68 mm

29) A patient sees his optician for a new pair of Rx sunglasses. The patient goes fishing frequently and spends a lot of time on the water. He wants lenses that will help reduce the glare on the water. What type of sunglass lenses should the optician recommend?(Required)

A: Photochromic grey lenses.

B: 80% tinted brown lenses.

C: Polarized brown lenses.

30) Which of the following cleaning methods should an optician recommend to a patient for eyeglasses with an anti-reflection coating?(Required)

A: Apply alcohol and wipe off with a dry cloth or paper towel.

B: Use an ultrasonic cleaner.

C: Apply lens cleaner and wipe off with microfibre cloth.

31) A patient has the following Rx and pupillary distance:

OD −7.50 −1.75 × 180
OS −8.00 −1.00 × 180
Pupillary distance 26 mm/26.5 mm

Which of the following frames should the optician recommend?(Required)

A: A rectangular plastic frame with the following measurements:
A 54 mm
Distance between lenses 18 mm

B: A round plastic frame with the following measurements:
A 48 mm
Distance between lenses 16 mm

C: An oval metal frame with the following measurements: A 50 mm
Distance between lenses 18 mm

32) Why should the optician monitor a patient with low vision for changes in their vision?(Required)

A: To monitor and document the progression of their eye disease.

B: To evaluate the need to update their vision aids.

C: To identify any changes in their eyeglass Rx and update their eyeglasses accordingly.

33) What must the optician use as a reference point when measuring the segment height for a lined bifocal?(Required)

A: Centre of the pupil

B: Lower lid margin

C: Lower pupil edge

34) A patient’s Rx is:

OD −11.00 −0.75 × 180
OS −10.50 −0.50 × 180
Binocular pupillary distance 60 mm

She has selected 3 frames and asks the optician to recommend the one that would be best for her.

Based on the frames’ measurements, which of the following frames should the optician recommend?(Required)

A: A 52 mm
Distance between lenses 17mm
Temple length 140 mm

B: A 49 mm
Distance between lenses 18 mm
Temple length 135

C: A 43 mm
Distance between lenses 17 mm
Temple length 135 mm

35) What should an optician do to ensure the accuracy of an order for a pair of eyeglasses before submitting it to the lab?(Required)

A: Ensure the frame has been properly adjusted behind the patient’s ears.

B: Ensure the pupillary distance and segment heights are within standard tolerance.

C: Ensure the correct frame specifications are provided on the order.

36) While taking measurements for a bifocal lens, the optician realizes the pupilometer is not working. The optician decides to take a manual measurement instead using a pupillary distance ruler. While taking the near pupil distance, where should the optician align their dominant eye in front of the patient?(Required)

A: Patient’s right eye

B: Patient’s nose

C: Patient’s left eye

37) A patient with low vision has a best corrected visual acuity of 20/400. With the recommended magnification power of 5×, at what distance will the patient have to hold their reading material to achieve best results?(Required)

A: At a normal reading distance of 38–46 cm (15–18 in).

B: At a longer-than-normal distance (more than 50 cm/20 in).

C: At a closer-than-normal distance (less than 30 cm/12 in).

38) A 65-year-old patient complains of recent eye pain, difficulty maneuvering, and bumping into objects when walking. He is otherwise healthy. His visual acuity is OU 20/30 with eyeglasses.

What test should the optician recommend based on the patient’s complaint?(Required)

A: Amsler grid

B: Tonometry

C: Corneal topography

39) Which structure of the eye is involved in the process of accommodation?(Required)

A: Retina

B: Crystalline lens

C: Cornea

40) When adjusting frames, where should the optician aim to have the eyewear touch the patient’s face?(Required)

A: The bridge of the nose and the sides of the head.

B: The bridge of the nose and just above the root of the ears.

C: The sides of the head and the back of the ears.

41) What type of lens can the optician use to reduce magnification differences in the lenses of a patient with anisometropia?(Required)

A: A photochromic lens

B: An aspheric lens

C: An executive bifocal lens

42) A patient tells his optician he takes the medication Zoloft, an antidepressant. He asks the optician if this medication can affect his eyes. What ocular side effects could Zoloft cause that the optician should explain to the patient?(Required)

A: Increased intra-ocular pressure.

B: Dry-eye syndrome.

C: Corneal edema.

43) A patient comes to the dispensary for a new pair of eyeglasses. She wants eyeglasses she can wear at her desk – she spends 8 hours a day at her computer. She complains that her current progressive lenses are not working for her anymore and she is constantly having to tilt her head back to see her computer screen clearly. What should the optician ask to help determine the best solution for this patient?(Required)

A: Do you have an anti-reflective coating on your current eyeglasses?

B: How far away and how high is your computer monitor in relation to your eyeglasses?

C: What type of lighting does your computer area have?

44) Which of the following eyeglass lenses should an optician recommend to a pilot with an OU −0.75 Rx, for daytime aviation?(Required)

A: Polarized Rx sunglasses

B: Rx eyeglasses with anti-reflective coating

C: Non-polarized Rx sunglasses

45) What are the box measurements of a frame that an optician must submit to the lab to surface lenses?(Required)

A: A, B, distance between lenses, and effective diameter.

B: Distance between lenses, effective diameter, geometric centres, and vertex distance.

C: A, geometric centres, temple length, and vertex distance.

46) A patient has the following Rx:

OD +9.25 −0.75 × 080
OS +8.75 −0.50 × 110
Pupillary distance 27.5 mm/29 mm

Which of the following frames will result in the thickest lens edges for this patient?(Required)

A: A round plastic frame with the following measurements:
A 50 mm
Distance between lenses 18 mm

B: A square metal frame with the following measurements:
A 49 mm
Distance between lenses 17 mm

C: A semi-rimless metal frame with the following measurements:
A 48 mm
Distance between lenses 19 mm

47) What tool should an optician use to re-insert a lens into a patient’s semi-rimless eyeglass frame?(Required)

A: Nylon cord and a plastic strip.

B: Screws and a screwdriver.

C: Adhesive tape.

48) A patient sees his optician, Lucy, for an adjustment for the first time, 18 months after picking up his new eyeglasses. He takes his eyeglasses off with his right hand and shows Lucy that the arm on the right side of his eyeglasses is spread out much wider than the left one. Lucy also notes that the eyeglasses are crooked and very loose.

What must Lucy tell the patient to maintain better performance of his eyeglasses?(Required)

A: He should come in periodically for adjustments and always remove his eyeglasses with both hands.

B: He should replace the frames because they are defective, as shown by the fact that they are splayed only on one side.

C: He should come in once per week for adjustments to maintain the warranty and proper shape of the frame.

49) A 46-year-old mechanic working in a busy garage has just had an eye exam. His new Rx is:

OD −1.50 −0.25 × 180
OS −1.25 −0.25 × 175
Add OU +1.50

Which of the following eyeglass types should the optician recommend the patient use while working under the cars?(Required)

A: Non-Rx polycarbonate safety eyeglasses.

B: Flat-top 28 bifocal safety eyeglasses.

C: Progressive safety eyeglasses.

50) A receptionist at a busy doctor’s office uses 3 or more computer monitors at the same time. They are positioned higher than her eye level. Her last pair of eyeglasses, purchased 2 years ago, were progressive lenses. She has been very unhappy with them because she must tilt her head back all day at work to clearly read the monitors, which is causing neck strain. The eyeglasses still work well for everyday use, such as driving, watching TV, grocery shopping, and reading.

The patient visits her optician and asks for eyeglasses she can more comfortably wear at work. Which option should the optician recommend?(Required)

A: Short-corridor progressive lenses

B: ST28 lined bifocal lenses

C: Single-vision intermediate lenses

51) A patient visits his optician to pick up his first pair of progressive lens eyeglasses. What information should the optician provide regarding the progressive lenses?(Required)

A: First, we will make sure the eyeglasses fit you properly on the bridge and behind the ears, then you will need to try them out for a few minutes to get used to them. Do you have any questions about your new eyewear?

B: Please try on your new eyeglasses and have a look at a distance. Now try and look down at this reading card. It should be clear when you are looking straight at the words. If you are struggling with your new progressive lenses, it will help to wear your old glasses until you are ready to try the new ones again.

C: With your new eyeglasses on, please look down at this reading card. Once the reading card is in focus, keep your focus on the card and move your head from side to side. See how it gets blurry at the edges? Those are the distortion areas of the progressive lenses and require some adaptation.

52) Which of the following is a visual symptom of diabetes?(Required)

A: Fluctuating visual acuity.

B: Seeing flashes of light.

C: Loss of central vision

53) Which of the following must the optician do during the visual inspection of eyeglasses before dispensing them to the patient?(Required)

A: Check that the patient’s Rx is less than 2 years old.

B: Check that the patient’s eyes are well-centred in the frame.

C: Check that the lenses are free of defects, bubbles, or waves.

54) When verifying the Rx of completed eyeglasses received from the lab, what should the optician do?(Required)

A: Compare the completed eyeglasses with the Rx written on the work order sent to the lab.

B: Compare the completed eyeglasses with the original Rx in the patient’s record.

C: Compare the completed eyeglasses with the Rx written on the work order or invoice the lab sent with the completed eyeglasses.

55) An optician has been diagnosed with the flu and is receiving treatment. She comes to the dispensary for her shift and mentions her diagnosis and treatment plan to her managing optician. What should the manager do?(Required)

A: Ask the optician to go home and not return to work until she no longer has flu symptoms.

B: Ask the optician to stay at work wearing a mask until a replacement optician arrives in a few hours. She should return to work when she feels well.

C: Ask the optician to wear a mask at work until she is no longer receiving treatment for the flu.

56) A patient visits her optician after seeing her optometrist and learning she has cataracts. She is not familiar with cataracts and has questions for her optician. She describes several symptoms she has been experiencing lately.

Which of the symptoms should the optician associate with her cataracts?(Required)

A: Red, painful, burning eyes.

B: Irritated, watery eyes that feel gritty.

C: Extreme sensitivity to light.

57) A patient returns to her optician 2 weeks after picking up her new eyeglasses. She complains that the nosepads on her metal frames are leaving sore red marks on her nose and the temples are hurting right behind her ears.

What must the optician do to correct the problem?(Required)

A: Recommend a plastic frame.

B: Change the nosepads to a larger size.

C: Loosen the temple bend behind the ears.

58) Samuel has returned to his optician complaining about his progressive eyeglasses. His Rx is:

OD −4.00 −1.00 × 160
OS −4.25 −0.75 × 075
Add OU +2.00

Samuel says he cannot see as clearly as before when using his eyeglasses at work. He is a supervisor in an office with multiple employees and multiple computer monitors. He constantly moves through the office looking at staff monitors. He has no problem with his eyeglasses when he is not in the office.

What should the optician do to improve Samuel`s vision in the office?(Required)

A: Order occupational progressive eyeglasses for office use only.

B: Adjust Samuel’s current eyeglasses for more pantoscopic tilt.

C: Recommend that Samuel ensure his office environment includes task-specific lighting and use an increased font size on all monitors.

59) An optician neutralizes his patient’s current reading eyeglasses and records the following parameters:

OD +2.50
OS +2.75
Binocular pupillary distance 54 mm

When the optician measures the patient’s near binocular pupillary distance with the pupilometer, he measures it at 61 mm. He does not have a copy of the Rx used to order the eyeglasses. What is the most likely cause of the difference in pupillary distance measurements?(Required)

A: Horizontal base-in prism

B: Horizontal base-out prism

C: Oblique decentration

60) An elderly patient, Bengt, sees his optician for new eyeglasses. Bengt’s grandson comes to the appointment to help him. Bengt’s Rx notes that because of macular degeneration his best corrected visual acuity is:

OD 20/80
OS 20/200

Bengt mentions to his optician that the optometrist who issued the Rx never explained the diagnosis. Bengt is hard of hearing and does not understand why new eyeglasses will not give him 20/20 visual acuity.

How should the optician handle this situation?(Required)

A: The optician should explain the diagnosis to Bengt’s grandson so he understands it. The grandson can then explain it to Bengt, who will be more comfortable hearing it from his grandson.

B: The optician should give the explanation in writing because Bengt is hard of hearing. Bengt can then read the explanation at home and better understand his diagnosis and the limitations of his vision.

C: The optician should speak to Bengt and explain the diagnosis and the limitations of his vision, speaking more slowly and loudly so Bengt can understand the information.