C ERT I F I ED
PCA.
N A T I O N A L H E A LT H C A R E C E R T I F I C A T I O N · P R O F E S S I O N A L S TA N D A R D S
Patient Care Assistant
Exam 2: Dermatology & Ophthalmology
Skin, Hair, Nails & Eye Examination · 133 Practice Questions with Rationales
E X A M I N AT I O N F O C U S :
Dermatology, Skin Lesions, Eye Anatomy
& Physical Examination Techniques
Edition 1 · July 2026
EXAM FOCUSED DETAILED HIGH-YIELD CONFIDENCE
RATIONALES CONTENT BUILDER
Questions aligned with
PCA exam standards Clear explanations for Focus on tested Practice smarter and pass
every answer dermatology & eye with confidence
concepts
P r e pa r e · P r a c t i c e · Pa s s
Excellence in Patient Care Certification
,PCA EXAM 2 · DERMATOLOGY & OPHTHALMOLOGY TABLE OF CONTENTS
Table of Contents
1. Instructions for Use 3
2. Questions 1–70 — Skin, Hair, Nails & Lesions 3
3. Questions 71–133 — Eye Examination & Conditions 10
4. Seller Appreciation 16
PCA · Patient Care Assistant Certification Page 2
,PCA EXAM 2 GUIDE INSTRUCTIONS & PRACTICE QUESTIONS 1–133
How to Use This Guide
Read each stem, select your answer, then review the rationale. Correct answers are distributed
across all four letter positions. Covers dermatology (skin layers, lesions, hair, nails, skin cancer)
and ophthalmology (eye anatomy, visual fields, muscle actions, conditions) for PCA certification.
Questions 1–35: Skin Fundamentals, Hair, Nails & Lesion Types
1 The normal angle between the proximal nail fold and nail plate is:
A Less than 180 degrees
B Exactly 180 degrees
C Greater than 180 degrees
D 90 degrees
Correct Answer: A. The normal angle is <180° — an angle ≥180° indicates
clubbing, associated with cardiopulmonary conditions.
Rationale: Clubbing is a key physical finding in congenital heart disease,
interstitial lung disease, lung cancer, and IBD. Assessing the nail angle is a quick,
valuable screening tool.
2 Important functions of the skin include:
A Homeostasis, retaining body fluids, protecting underlying tissues,
modulating body temperature, synthesizing vitamin D
B Producing red blood cells and storing calcium
C Digesting nutrients and absorbing carbohydrates
D Filtering blood and producing urine
Correct Answer: A. The skin is a multifunctional organ — barrier,
thermoregulator, vitamin D synthesizer. Hair and nails are appendages of the skin.
Rationale: B describes bone marrow/bone. C describes GI tract. D describes
kidneys. Understanding skin functions helps PCA professionals recognize
dysfunction.
, 3 What determines skin color?
A Melanin
B Carotene
C Bilirubin
D Hemoglobin
Correct Answer: A. Melanin is the primary determinant of skin color — produced
by melanocytes in the epidermis.
Rationale: B, C, D influence skin color but do not determine baseline
pigmentation. Melanin protects against UV radiation.
4 What influences skin color (but does not determine it)?
A Underlying vascular structures, changing hemodynamics, changes in
bilirubin
B Melanin production only
C Hair color and eye color exclusively
D Dietary intake of carotenoids only
Correct Answer: A. Vascular dilation/constriction, blood flow changes, and
bilirubin levels can alter skin appearance without changing melanin content.
Rationale: B determines color. C and D are too narrow. Hemodynamic changes
explain pallor, flushing, and cyanosis.
5 The 3 abnormal skin colors are:
A Pallor, cyanosis, jaundice
B Erythema, ecchymosis, petechiae
C Hyperpigmentation, hypopigmentation, depigmentation
D Flushing, blanching, mottling
Correct Answer: A. Pallor (anemia/shock), cyanosis (hypoxemia), and jaundice
(liver disease/hemolysis) are the three classic abnormal skin colors.
Rationale: B describes lesions. C describes pigment disorders. D describes
vascular phenomena. These three colors signal systemic disease.
PCA.
N A T I O N A L H E A LT H C A R E C E R T I F I C A T I O N · P R O F E S S I O N A L S TA N D A R D S
Patient Care Assistant
Exam 2: Dermatology & Ophthalmology
Skin, Hair, Nails & Eye Examination · 133 Practice Questions with Rationales
E X A M I N AT I O N F O C U S :
Dermatology, Skin Lesions, Eye Anatomy
& Physical Examination Techniques
Edition 1 · July 2026
EXAM FOCUSED DETAILED HIGH-YIELD CONFIDENCE
RATIONALES CONTENT BUILDER
Questions aligned with
PCA exam standards Clear explanations for Focus on tested Practice smarter and pass
every answer dermatology & eye with confidence
concepts
P r e pa r e · P r a c t i c e · Pa s s
Excellence in Patient Care Certification
,PCA EXAM 2 · DERMATOLOGY & OPHTHALMOLOGY TABLE OF CONTENTS
Table of Contents
1. Instructions for Use 3
2. Questions 1–70 — Skin, Hair, Nails & Lesions 3
3. Questions 71–133 — Eye Examination & Conditions 10
4. Seller Appreciation 16
PCA · Patient Care Assistant Certification Page 2
,PCA EXAM 2 GUIDE INSTRUCTIONS & PRACTICE QUESTIONS 1–133
How to Use This Guide
Read each stem, select your answer, then review the rationale. Correct answers are distributed
across all four letter positions. Covers dermatology (skin layers, lesions, hair, nails, skin cancer)
and ophthalmology (eye anatomy, visual fields, muscle actions, conditions) for PCA certification.
Questions 1–35: Skin Fundamentals, Hair, Nails & Lesion Types
1 The normal angle between the proximal nail fold and nail plate is:
A Less than 180 degrees
B Exactly 180 degrees
C Greater than 180 degrees
D 90 degrees
Correct Answer: A. The normal angle is <180° — an angle ≥180° indicates
clubbing, associated with cardiopulmonary conditions.
Rationale: Clubbing is a key physical finding in congenital heart disease,
interstitial lung disease, lung cancer, and IBD. Assessing the nail angle is a quick,
valuable screening tool.
2 Important functions of the skin include:
A Homeostasis, retaining body fluids, protecting underlying tissues,
modulating body temperature, synthesizing vitamin D
B Producing red blood cells and storing calcium
C Digesting nutrients and absorbing carbohydrates
D Filtering blood and producing urine
Correct Answer: A. The skin is a multifunctional organ — barrier,
thermoregulator, vitamin D synthesizer. Hair and nails are appendages of the skin.
Rationale: B describes bone marrow/bone. C describes GI tract. D describes
kidneys. Understanding skin functions helps PCA professionals recognize
dysfunction.
, 3 What determines skin color?
A Melanin
B Carotene
C Bilirubin
D Hemoglobin
Correct Answer: A. Melanin is the primary determinant of skin color — produced
by melanocytes in the epidermis.
Rationale: B, C, D influence skin color but do not determine baseline
pigmentation. Melanin protects against UV radiation.
4 What influences skin color (but does not determine it)?
A Underlying vascular structures, changing hemodynamics, changes in
bilirubin
B Melanin production only
C Hair color and eye color exclusively
D Dietary intake of carotenoids only
Correct Answer: A. Vascular dilation/constriction, blood flow changes, and
bilirubin levels can alter skin appearance without changing melanin content.
Rationale: B determines color. C and D are too narrow. Hemodynamic changes
explain pallor, flushing, and cyanosis.
5 The 3 abnormal skin colors are:
A Pallor, cyanosis, jaundice
B Erythema, ecchymosis, petechiae
C Hyperpigmentation, hypopigmentation, depigmentation
D Flushing, blanching, mottling
Correct Answer: A. Pallor (anemia/shock), cyanosis (hypoxemia), and jaundice
(liver disease/hemolysis) are the three classic abnormal skin colors.
Rationale: B describes lesions. C describes pigment disorders. D describes
vascular phenomena. These three colors signal systemic disease.
