COMLEX Level 1 EXAM 2026/2027
COMPLETE ACCURATE TEST EXAM
ACTUAL QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES
(VERIFIED SOLUTIONS)
|BEST DOCUMENT FOR EXAM
A 2-year-old male is brought in because his eyes "cross" when he is tired. On
exam, the corneal light reflex is displaced laterally on the right eye. When the
left eye is covered, the right eye moves laterally to fixate. Diagnosis?
Esotropia (The eye was deviated medially/inward)
Correct Answer: Esotropia
Expert Rationale:
Esotropia is a form of strabismus in which the eye deviates inward. A laterally
displaced corneal light reflex indicates inward deviation of the affected eye.
During the cover test, movement of the uncovered eye laterally to fixate confirms
that it was previously deviated medially. The history of eyes “crossing,” especially
when fatigued, is consistent with esotropia. Other options such as exotropia
involve outward deviation, which would produce a medially displaced light reflex.
DIF: Application
REF: Pediatric Ophthalmology / Strabismus
OBJ: Identify types of strabismus using physical exam findings
TOP: Assessment / Nursing Process Step: Assessment
,A 38-week-old neonate is noted to have a "keyhole" appearance to the iris in
the 6 o'clock position. This finding is most likely a result of which embryologic
failure?
Failed closure of the embryonic fissure (Iris Coloboma)
Correct Answer: Failed closure of the embryonic fissure (Iris Coloboma)
Expert Rationale:
An iris coloboma presents as a “keyhole” defect, typically in the inferior (6 o’clock)
position of the iris. It results from failure of the embryonic (choroid) fissure to
close during ocular development. This defect leads to a gap in the iris structure,
producing the characteristic appearance. Other embryologic abnormalities do not
produce this distinct keyhole-shaped iris defect.
DIF: Application
REF: Embryology / Eye Development
OBJ: Identify congenital eye defects based on embryologic origin
TOP: Assessment / Nursing Process Step: Assessment
A 4-week-old infant presents with persistent tearing and yellow crusting of the
lashes. The conjunctiva is clear and the sclera is non-injected. What is the most
appropriate initial management for this patient?
Crigler massage (OMM) applied in a caudad and lateral direction
Correct Answer: Crigler massage (OMM) applied in a caudad and lateral
direction
Expert Rationale:
This infant’s symptoms are consistent with congenital nasolacrimal duct
obstruction, characterized by persistent tearing and crusting without conjunctival
injection. The initial management is Crigler massage, which applies downward
(caudad) and lateral pressure over the lacrimal sac to help open the obstructed
,duct and promote drainage. Clear conjunctiva and non-injected sclera help
distinguish this condition from conjunctivitis, which would require different
management such as antibiotics.
DIF: Application
REF: Pediatric Ophthalmology / Nasolacrimal Duct Obstruction
OBJ: Identify and manage congenital nasolacrimal duct obstruction
TOP: Assessment / Nursing Process Step: Implementation
A mother brings in her 3-year-old daughter because her eyes look "crooked" in
photos. The physician notes a broad nasal bridge and prominent epicanthal
folds. The corneal light reflex is symmetrical. What is the next step?
Reassurance (Diagnosis is Pseudostrabismus)
Correct Answer: Reassurance (Diagnosis: Pseudostrabismus)
Expert Rationale:
Pseudostrabismus is the false appearance of eye misalignment, commonly seen in
children with a broad nasal bridge and prominent epicanthal folds. A symmetrical
corneal light reflex indicates proper ocular alignment, ruling out true strabismus.
Since no actual deviation is present, no treatment is required, and reassurance is
appropriate. True strabismus would show an asymmetric light reflex and require
further evaluation.
DIF: Application
REF: Pediatric Ophthalmology / Strabismus
OBJ: Differentiate pseudostrabismus from true strabismus
TOP: Assessment / Nursing Process Step: Assessment
, A 15-month-old male is found to have a white pupillary reflex during a routine
well-child exam. If left untreated, what is the most likely prognosis for this
patient?
Nearly 100% mortality (Diagnosis: Retinoblastoma)
Correct Answer: Nearly 100% mortality (Diagnosis: Retinoblastoma)
Expert Rationale:
A white pupillary reflex (leukocoria) in a young child is highly concerning for
Retinoblastoma, a malignant tumor of the retina. If left untreated, retinoblastoma
is rapidly progressive and can metastasize to the brain and other structures,
resulting in nearly 100% mortality. Early detection and treatment significantly
improve survival outcomes. Other causes of leukocoria (e.g., congenital cataract)
are not associated with such a high mortality risk.
DIF: Application
REF: Pediatric Oncology / Retinoblastoma
OBJ: Recognize leukocoria as a sign of life-threatening pediatric malignancy
TOP: Assessment / Nursing Process Step: Assessment
An infant born at 27 weeks' gestation required prolonged NICU stay with
supplemental oxygen. Funduscopic exam shows extraretinal fibrovascular
proliferation into the vitreous. What is the primary pathophysiology?
Vessel proliferation into the normally avascular vitreous space (ROP)
Expert Rationale:
Retinopathy of prematurity (ROP) occurs in extremely premature infants due to
incomplete retinal vascular development at birth. Exposure to supplemental
oxygen disrupts normal vascular endothelial growth factor (VEGF) regulation,
initially causing retinal vessel constriction and cessation of normal vascular
growth. When oxygen therapy is reduced, relative retinal hypoxia stimulates
excessive VEGF release, leading to abnormal neovascularization. These fragile new
COMPLETE ACCURATE TEST EXAM
ACTUAL QUESTIONS AND CORRECT
DETAILED ANSWERS WITH RATIONALES
(VERIFIED SOLUTIONS)
|BEST DOCUMENT FOR EXAM
A 2-year-old male is brought in because his eyes "cross" when he is tired. On
exam, the corneal light reflex is displaced laterally on the right eye. When the
left eye is covered, the right eye moves laterally to fixate. Diagnosis?
Esotropia (The eye was deviated medially/inward)
Correct Answer: Esotropia
Expert Rationale:
Esotropia is a form of strabismus in which the eye deviates inward. A laterally
displaced corneal light reflex indicates inward deviation of the affected eye.
During the cover test, movement of the uncovered eye laterally to fixate confirms
that it was previously deviated medially. The history of eyes “crossing,” especially
when fatigued, is consistent with esotropia. Other options such as exotropia
involve outward deviation, which would produce a medially displaced light reflex.
DIF: Application
REF: Pediatric Ophthalmology / Strabismus
OBJ: Identify types of strabismus using physical exam findings
TOP: Assessment / Nursing Process Step: Assessment
,A 38-week-old neonate is noted to have a "keyhole" appearance to the iris in
the 6 o'clock position. This finding is most likely a result of which embryologic
failure?
Failed closure of the embryonic fissure (Iris Coloboma)
Correct Answer: Failed closure of the embryonic fissure (Iris Coloboma)
Expert Rationale:
An iris coloboma presents as a “keyhole” defect, typically in the inferior (6 o’clock)
position of the iris. It results from failure of the embryonic (choroid) fissure to
close during ocular development. This defect leads to a gap in the iris structure,
producing the characteristic appearance. Other embryologic abnormalities do not
produce this distinct keyhole-shaped iris defect.
DIF: Application
REF: Embryology / Eye Development
OBJ: Identify congenital eye defects based on embryologic origin
TOP: Assessment / Nursing Process Step: Assessment
A 4-week-old infant presents with persistent tearing and yellow crusting of the
lashes. The conjunctiva is clear and the sclera is non-injected. What is the most
appropriate initial management for this patient?
Crigler massage (OMM) applied in a caudad and lateral direction
Correct Answer: Crigler massage (OMM) applied in a caudad and lateral
direction
Expert Rationale:
This infant’s symptoms are consistent with congenital nasolacrimal duct
obstruction, characterized by persistent tearing and crusting without conjunctival
injection. The initial management is Crigler massage, which applies downward
(caudad) and lateral pressure over the lacrimal sac to help open the obstructed
,duct and promote drainage. Clear conjunctiva and non-injected sclera help
distinguish this condition from conjunctivitis, which would require different
management such as antibiotics.
DIF: Application
REF: Pediatric Ophthalmology / Nasolacrimal Duct Obstruction
OBJ: Identify and manage congenital nasolacrimal duct obstruction
TOP: Assessment / Nursing Process Step: Implementation
A mother brings in her 3-year-old daughter because her eyes look "crooked" in
photos. The physician notes a broad nasal bridge and prominent epicanthal
folds. The corneal light reflex is symmetrical. What is the next step?
Reassurance (Diagnosis is Pseudostrabismus)
Correct Answer: Reassurance (Diagnosis: Pseudostrabismus)
Expert Rationale:
Pseudostrabismus is the false appearance of eye misalignment, commonly seen in
children with a broad nasal bridge and prominent epicanthal folds. A symmetrical
corneal light reflex indicates proper ocular alignment, ruling out true strabismus.
Since no actual deviation is present, no treatment is required, and reassurance is
appropriate. True strabismus would show an asymmetric light reflex and require
further evaluation.
DIF: Application
REF: Pediatric Ophthalmology / Strabismus
OBJ: Differentiate pseudostrabismus from true strabismus
TOP: Assessment / Nursing Process Step: Assessment
, A 15-month-old male is found to have a white pupillary reflex during a routine
well-child exam. If left untreated, what is the most likely prognosis for this
patient?
Nearly 100% mortality (Diagnosis: Retinoblastoma)
Correct Answer: Nearly 100% mortality (Diagnosis: Retinoblastoma)
Expert Rationale:
A white pupillary reflex (leukocoria) in a young child is highly concerning for
Retinoblastoma, a malignant tumor of the retina. If left untreated, retinoblastoma
is rapidly progressive and can metastasize to the brain and other structures,
resulting in nearly 100% mortality. Early detection and treatment significantly
improve survival outcomes. Other causes of leukocoria (e.g., congenital cataract)
are not associated with such a high mortality risk.
DIF: Application
REF: Pediatric Oncology / Retinoblastoma
OBJ: Recognize leukocoria as a sign of life-threatening pediatric malignancy
TOP: Assessment / Nursing Process Step: Assessment
An infant born at 27 weeks' gestation required prolonged NICU stay with
supplemental oxygen. Funduscopic exam shows extraretinal fibrovascular
proliferation into the vitreous. What is the primary pathophysiology?
Vessel proliferation into the normally avascular vitreous space (ROP)
Expert Rationale:
Retinopathy of prematurity (ROP) occurs in extremely premature infants due to
incomplete retinal vascular development at birth. Exposure to supplemental
oxygen disrupts normal vascular endothelial growth factor (VEGF) regulation,
initially causing retinal vessel constriction and cessation of normal vascular
growth. When oxygen therapy is reduced, relative retinal hypoxia stimulates
excessive VEGF release, leading to abnormal neovascularization. These fragile new
