Ch. 15 The Special Senses
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Not the one you use?Change textbook
Chapter 15, Problem 30
Mrs. Orlando has been noticing flashes of light and tiny specks in her right visual field. When she begins to see a “veil” floating before her right eye, she makes an appointment to see the eye doctor. What is your diagnosis? Is the condition serious? Explain.
Verified step by step guidance1
Step 1: Identify the symptoms described: flashes of light, tiny specks (floaters), and a 'veil' or curtain effect in the visual field of one eye. These symptoms suggest a problem within the eye, particularly the retina or vitreous body.
Step 2: Understand that flashes of light and floaters often indicate vitreous detachment or retinal irritation. The 'veil' or curtain effect is a classic sign of a retinal detachment, where the retina begins to separate from the underlying tissue.
Step 3: Recognize that retinal detachment is a serious condition because the retina is essential for converting light into neural signals for vision. If untreated, it can lead to permanent vision loss in the affected eye.
Step 4: Explain that immediate medical attention is necessary. An eye doctor will perform a thorough examination, often using ophthalmoscopy, to confirm the diagnosis and determine the extent of the detachment.
Step 5: Summarize that the symptoms strongly suggest retinal detachment, which is a medical emergency. Early diagnosis and treatment, such as laser therapy or surgery, are crucial to prevent permanent vision loss.
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Visual Aura and Scotoma
Visual aura refers to transient visual disturbances such as flashes of light or specks, often preceding migraines or other neurological events. Scotoma is a partial loss of vision or blind spots in the visual field. Recognizing these symptoms helps differentiate between benign and serious causes of visual changes.
Recommended video:
02:52
Types of Electron Microscopes
Retinal Detachment
Retinal detachment occurs when the retina separates from the underlying tissue, causing symptoms like flashes of light, floaters, and a veil or curtain over the visual field. It is a medical emergency requiring prompt treatment to prevent permanent vision loss.
Recommended video:
Guided course
5:04Structures of the Retina
Ophthalmologic Evaluation and Urgency
An eye doctor’s evaluation is crucial to diagnose the cause of visual symptoms accurately. Conditions like retinal detachment are serious and need immediate intervention, while others may be less urgent. Early diagnosis and treatment can preserve vision and prevent complications.
Related Practice