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Exam (elaborations)

COA EXAM PREP questions and 100% correct answers 2025

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To photograph the posterior pole, the center of focus is Select one: a. the macula. b. the optic disc. c. between the macula and the optic disc. d. between the optic disc and the nasal arcades. - correct answer c. between the macula and the optic disc. What is first seen (recorded) in fluorescein angiography? Select one: a. Arterial phase b. Capillary phase c. Choroidal flush d. Venous phase - correct answer c. Choroidal flush A fluorescein angiogram is used for which of the following? Select one: a. Counting epithelial cells b. Measuring the eye's contrast sensitivity c. Viewing detail, such as blockages in fundus blood vessels d. Estimating the cornea's ability to withstand stress of an operation - correct answer c. Viewing detail, such as blockages in fundus blood vessels The three principle types of ophthalmic imaging are Select one: a. specular, pachymetry, and contrast sensitivity. b. external, slit lamp, and fundus. c. slit lamp, pachymetry, and ultrasonography. d. contrast sensitivity, viewing blockages, and viewing vessels. - correct answer b. external, slit lamp, and fundus. Retroillumination detects

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November 6, 2025
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COA EXAM PREP
To photograph the posterior pole, the center of focus is

Select one:

a. the macula.

b. the optic disc.

c. between the macula and the optic disc.

d. between the optic disc and the nasal arcades. - ✔✔ correct answer c. between the macula and the
optic disc.



What is first seen (recorded) in fluorescein angiography?

Select one:

a. Arterial phase

b. Capillary phase

c. Choroidal flush

d. Venous phase - ✔✔ correct answer c. Choroidal flush



A fluorescein angiogram is used for which of the following?

Select one:

a. Counting epithelial cells

b. Measuring the eye's contrast sensitivity

c. Viewing detail, such as blockages in fundus blood vessels

d. Estimating the cornea's ability to withstand stress of an operation - ✔✔ correct answer c. Viewing
detail, such as blockages in fundus blood vessels



The three principle types of ophthalmic imaging are

Select one:

a. specular, pachymetry, and contrast sensitivity.

b. external, slit lamp, and fundus.

c. slit lamp, pachymetry, and ultrasonography.

d. contrast sensitivity, viewing blockages, and viewing vessels. - ✔✔ correct answer b. external, slit
lamp, and fundus.



Retroillumination detects

,COA EXAM PREP
Select one:

a. opacities or defects in the iris.

b. irregularities of the eyelids or eyelashes.

c. the palperal conjunctiva or sclera.

d. adverse corneal effects from CLS. - ✔✔ correct answer a. opacities or defects in the iris.



Health care professionals who have open lesions, dermatitis, or other skin irritations should not
participate in direct patient care activities or handle

Select one:

a. contaminated equipment.

b. gowns and masks.

c. sealed instruments.

d. disposable gloves. - ✔✔ correct answer a. contaminated equipment.



Why should laminated acuity projector slides NOT be cleaned under running water?

Select one:

a. Retained moisture might short out the projector.

b. The letters, numerals, and/or characters will be washed off the slide.

c. The specially heated glass of the projector slide will lose its heat-resistant properties.

d. Water beads can pool between the two layers of glass. - ✔✔ correct answer d. Water beads can
pool between the two layers of glass.



The application of coding facilitates the processing of insurance claims. The assigned code, as it refers
to procedures and services, must be supported by

Select one:

a. all billing practices.

b. the medical records.

c. the policies and procedures manual.

d. the length of time the appointment took. - ✔✔ correct answer b. the medical records.



Obtaining informed consent for a procedure

Select one:

, COA EXAM PREP
a. is having the patient sign the consent form.

b. begins at the preoperative visit.

c. is not needed if the procedure is medically necessary.

d. is a process involving education of the patient. - ✔✔ correct answer d. is a process involving
education of the patient.



What are the principles that dictate appropriate or inappropriate behaviors?

Select one:

a. Ethics

b. Decency

c. Morality

d. Standards - ✔✔ correct answer a. Ethics



Informed consent occurs

Select one:

a. when the patient signs the consent form.

b. when the patient acknowledges understanding of the treatment recommended.

c. as a process of patient education and participation in the decision-making process with
documentation in record of consent to treat.

d. when a reasonable patient verbally agrees to the recommended treatment. - ✔✔ correct answer
c. as a process of patient education and participation in the decision-making process with
documentation in record of consent to treat.



Spectacle blur is unclear vision associated with

Select one:

a. changing from an old spectacle prescription to a new one.

b. changing from contacts to spectacles.

c. changing from spectacles to contacts.

d. spasm of accommodation. - ✔✔ correct answer b. changing from contacts to spectacles.



Changing the base curve of a contact lens changes the fitting characteristics of that lens due to a
change in sagittal depth. Increasing the base curve radius of a contact lens while maintaining the
same diameter will cause the lens to fit

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