NBEO EXAM ACTUAL EXAM 2026 || MOST RECENT
EXAM 2026|2027 ACTUAL COMPLETE REAL EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!
A patient has a lesion affecting the right optic nerve posterior to the
optic chiasm. Which visual field defect would be most consistent with a
lesion of the right optic tract?
A. Right monocular blindness
B. Left homonymous hemianopia
C. Bitemporal hemianopia
D. Right nasal hemianopia
Answer: B. Left homonymous hemianopia
Rationale: The right optic tract contains fibers originating from the
right temporal retina and left nasal retina. These fibers carry
information representing the left visual field from both eyes. Therefore,
a right optic tract lesion produces a left homonymous hemianopia. A
lesion of the optic nerve would cause monocular vision loss, whereas a
chiasma lesion classically causes bitemporal hemianopia.
A patient has a sudden, painless loss of vision in one eye accompanied
by a relative afferent pupillary defect. Which condition should be
considered most strongly?
A. Central retinal artery occlusion
B. Mild dry eye disease
,C. Chronic blepharitis
D. Simple myopia
Answer: A. Central retinal artery occlusion
Rationale: Central retinal artery occlusion typically presents with
sudden, profound, painless monocular visual loss and an afferent
pupillary defect. It is an ocular emergency because retinal tissue is
highly sensitive to ischemia. The classic fundus finding is retinal
whitening with a contrasting cherry-red spot at the fovea.
Which cranial nerve innervates the lateral rectus muscle?
A. Cranial nerve II
B. Cranial nerve III
C. Cranial nerve IV
D. Cranial nerve VI
Answer: D. Cranial nerve VI
Rationale: The lateral rectus abducts the eye and is innervated by
cranial nerve VI, the abducens nerve. A sixth-nerve palsy produces
impaired abduction and typically causes horizontal diplopia that is
worse when looking toward the affected side.
Which structure produces most of the aqueous humor?
A. Ciliary body processes
B. Trabecular meshwork
C. Choroid
D. Iris sphincter
Answer: A. Ciliary body processes
,Rationale: Aqueous humor is primarily produced by the non-pigmented
epithelium of the ciliary processes. It flows from the posterior chamber
through the pupil into the anterior chamber and exits mainly through
the trabecular meshwork and Schlemm canal.
Which refractive error occurs when parallel rays of light focus in front
of the retina when accommodation is relaxed?
A. Hyperopia
B. Myopia
C. Presbyopia
D. Emmetropia
Answer: B. Myopia
Rationale: In myopia, the eye has excessive optical power relative to its
axial length, causing distant objects to focus in front of the retina. A
concave, or minus, lens diverges incoming rays and moves the focal
point posteriorly onto the retina.
Which type of lens is used to correct hyperopia?
A. Plus spherical lens
B. Minus spherical lens
C. Plus cylindrical lens only
D. Prism lens only
Answer: A. Plus spherical lens
Rationale: Hyperopic eyes have insufficient optical power relative to
their axial length. A plus spherical lens converges light before it enters
the eye, allowing the image to focus on the retina.
, Which retinal photoreceptor is primarily responsible for high-acuity
central vision?
A. Rods
B. Cones
C. Horizontal cells
D. Amacrine cells
Answer: B. Cones
Rationale: Cones are concentrated in the macula, especially the fovea,
and provide high-resolution, color vision under photopic conditions.
Rods are more important for peripheral and low-light vision.
Which retinal layer contains the photoreceptor outer segments?
A. Nerve fiber layer
B. Ganglion cell layer
C. Photoreceptor layer
D. Inner plexiform layer
Answer: C. Photoreceptor layer
Rationale: The photoreceptor layer contains the outer and inner
segments of rods and cones. Photoreceptor outer segments contain the
visual pigments necessary for photo-transduction.
Which medication class is most likely to cause pupillary dilation?
A. Muscarinic agonist
B. Anticholinergic agent
C. Prostaglandin analog
D. Carbonic anhydrase inhibitor
EXAM 2026|2027 ACTUAL COMPLETE REAL EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) ALREADY GRADED A+ | GUARANTEED
SUCCESS!! NEWEST EXAM | JUST RELEASED!!
A patient has a lesion affecting the right optic nerve posterior to the
optic chiasm. Which visual field defect would be most consistent with a
lesion of the right optic tract?
A. Right monocular blindness
B. Left homonymous hemianopia
C. Bitemporal hemianopia
D. Right nasal hemianopia
Answer: B. Left homonymous hemianopia
Rationale: The right optic tract contains fibers originating from the
right temporal retina and left nasal retina. These fibers carry
information representing the left visual field from both eyes. Therefore,
a right optic tract lesion produces a left homonymous hemianopia. A
lesion of the optic nerve would cause monocular vision loss, whereas a
chiasma lesion classically causes bitemporal hemianopia.
A patient has a sudden, painless loss of vision in one eye accompanied
by a relative afferent pupillary defect. Which condition should be
considered most strongly?
A. Central retinal artery occlusion
B. Mild dry eye disease
,C. Chronic blepharitis
D. Simple myopia
Answer: A. Central retinal artery occlusion
Rationale: Central retinal artery occlusion typically presents with
sudden, profound, painless monocular visual loss and an afferent
pupillary defect. It is an ocular emergency because retinal tissue is
highly sensitive to ischemia. The classic fundus finding is retinal
whitening with a contrasting cherry-red spot at the fovea.
Which cranial nerve innervates the lateral rectus muscle?
A. Cranial nerve II
B. Cranial nerve III
C. Cranial nerve IV
D. Cranial nerve VI
Answer: D. Cranial nerve VI
Rationale: The lateral rectus abducts the eye and is innervated by
cranial nerve VI, the abducens nerve. A sixth-nerve palsy produces
impaired abduction and typically causes horizontal diplopia that is
worse when looking toward the affected side.
Which structure produces most of the aqueous humor?
A. Ciliary body processes
B. Trabecular meshwork
C. Choroid
D. Iris sphincter
Answer: A. Ciliary body processes
,Rationale: Aqueous humor is primarily produced by the non-pigmented
epithelium of the ciliary processes. It flows from the posterior chamber
through the pupil into the anterior chamber and exits mainly through
the trabecular meshwork and Schlemm canal.
Which refractive error occurs when parallel rays of light focus in front
of the retina when accommodation is relaxed?
A. Hyperopia
B. Myopia
C. Presbyopia
D. Emmetropia
Answer: B. Myopia
Rationale: In myopia, the eye has excessive optical power relative to its
axial length, causing distant objects to focus in front of the retina. A
concave, or minus, lens diverges incoming rays and moves the focal
point posteriorly onto the retina.
Which type of lens is used to correct hyperopia?
A. Plus spherical lens
B. Minus spherical lens
C. Plus cylindrical lens only
D. Prism lens only
Answer: A. Plus spherical lens
Rationale: Hyperopic eyes have insufficient optical power relative to
their axial length. A plus spherical lens converges light before it enters
the eye, allowing the image to focus on the retina.
, Which retinal photoreceptor is primarily responsible for high-acuity
central vision?
A. Rods
B. Cones
C. Horizontal cells
D. Amacrine cells
Answer: B. Cones
Rationale: Cones are concentrated in the macula, especially the fovea,
and provide high-resolution, color vision under photopic conditions.
Rods are more important for peripheral and low-light vision.
Which retinal layer contains the photoreceptor outer segments?
A. Nerve fiber layer
B. Ganglion cell layer
C. Photoreceptor layer
D. Inner plexiform layer
Answer: C. Photoreceptor layer
Rationale: The photoreceptor layer contains the outer and inner
segments of rods and cones. Photoreceptor outer segments contain the
visual pigments necessary for photo-transduction.
Which medication class is most likely to cause pupillary dilation?
A. Muscarinic agonist
B. Anticholinergic agent
C. Prostaglandin analog
D. Carbonic anhydrase inhibitor
