PEG Flashcards
What is the purpose of direct ophthalmoscopy?
To examine the interior structures of the eye, including the retina, optic disc, and blood vessels.
What instrument is used for direct ophthalmoscopy?
Ophthalmoscope.
True or False: Direct ophthalmoscopy requires the use of dilating eye drops to examine the eye.
True.
What is the recommended distance between the examiner and the patient during direct ophthalmoscopy?
Approximately 15 inches.
Fill in the blank: The examiner should ask the patient to look __________ during direct ophthalmoscopy.
straight ahead.
What is the role of the lens dial on the ophthalmoscope during direct ophthalmoscopy?
To adjust the focus for clarity.
What is the purpose of using a small aperture on the ophthalmoscope during direct ophthalmoscopy?
To reduce the amount of light entering the eye, allowing for better visualization of the fundus.
What is the importance of using a red-free filter during direct ophthalmoscopy?
To enhance the visualization of blood vessels.
What is the recommended method for examining the macula during direct ophthalmoscopy?
Ask the patient to look directly at the light.
True or False: Direct ophthalmoscopy is commonly used for screening and routine eye exams.
True.
What is the term for the yellowish spot in the center of the retina that is responsible for sharp central vision?
Macula.
What is the appearance of the optic disc during direct ophthalmoscopy in a normal eye?
Round or oval, with a distinct margin and a central cup.
What are some common findings that can be identified during direct ophthalmoscopy?
Hypertensive retinopathy, diabetic retinopathy, and macular degeneration.
What is the term for the small, round, dark spot in the center of the optic disc?
Physiologic cup.
What is the recommended method for examining the optic disc during direct ophthalmoscopy?
Ask the patient to look in different directions to visualize all parts of the disc.
What is the term for the area of the retina where blood vessels enter and exit?
Optic disc.
True or False: Direct ophthalmoscopy is a quick and non-invasive procedure.
True.
What is the purpose of using a larger aperture on the ophthalmoscope during direct ophthalmoscopy?
To provide a wider field of view for examination.
What is the term for the blood vessels that can be visualized during direct ophthalmoscopy?
Retinal vessels.
What is the recommended method for examining the blood vessels during direct ophthalmoscopy?
Follow their course and note any abnormalities.
True or False: Direct ophthalmoscopy requires the examiner to be proficient in interpreting findings.
True.
What is the term for the layer of blood vessels that supply the retina?
Choroid.
What is the recommended method for examining the choroid during direct ophthalmoscopy?
Look for dark pigmentation and blood vessels.
What is the term for the light-sensitive layer of tissue lining the inner surface of the eye?
Retina.
What is ophthalmoscopy magnification used for?
To examine the retina and optic nerve in detail.
What is the typical magnification range for ophthalmoscopy?
Between 15x to 20x.
True or False: Ophthalmoscopy magnification allows for a closer look at the blood vessels in the eye.
True
What is the purpose of using ophthalmoscopy magnification during an eye exam?
To detect abnormalities or diseases in the retina and optic nerve.
Fill in the blank: Ophthalmoscopy magnification helps in the early detection of ________ in the eye.
Abnormalities
What part of the eye is specifically examined using ophthalmoscopy magnification?
Retina and optic nerve.
How does ophthalmoscopy magnification enhance the view of the eye compared to regular examination?
It provides a more detailed and magnified view.
What type of lens is typically used for ophthalmoscopy magnification?
Concave lens.
True or False: Ophthalmoscopy magnification is only used in specialized eye clinics.
False
What is the main advantage of using ophthalmoscopy magnification in eye examinations?
Improved visualization of the retina and optic nerve.
What is the recommended distance between the ophthalmoscope and the patient’s eye during magnification?
1-2 inches.
What can ophthalmoscopy magnification help diagnose in the eye?
Macular degeneration, diabetic retinopathy, and glaucoma.
Fill in the blank: Ophthalmoscopy magnification assists in identifying ________ in the eye.
Pathologies
What is the typical field of view when using ophthalmoscopy magnification?
Around 15 degrees.
True or False: Ophthalmoscopy magnification can help monitor the progression of eye diseases.
True
What is the main limitation of ophthalmoscopy magnification?
Limited depth perception.
What is the recommended lighting condition for ophthalmoscopy magnification?
Dim room with a bright light source.
Fill in the blank: Ophthalmoscopy magnification is essential for early detection of ________ diseases.
Ocular
What is the role of ophthalmoscopy magnification in detecting retinal detachment?
It can help visualize the detached retina.
True or False: Ophthalmoscopy magnification is mainly used for cosmetic eye procedures.
False
What is the minimum magnification level needed for detailed examination of the retina?
15x
What is the main advantage of using a concave lens for ophthalmoscopy magnification?
It provides a wider field of view.
Fill in the blank: Ophthalmoscopy magnification allows for better visualization of the ________ in the eye.
Optic disc
How does ophthalmoscopy magnification aid in diagnosing optic nerve diseases?
By providing a clearer view of the optic nerve head.
