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Physiological Optics 2: Visual Field and Defects

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Physiological Optics 2: Visual Field and Defects

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Questions and Answers

What is the primary difference between kinetic and static perimetry?

The age of the patient being tested

The type of target used for the test

The distance between the examiner and the patient

The movement of the target during the test (correct)

What is the purpose of the Amsler Grid Test?

To assess the patient's ability to see colors

To detect visual field defects (correct)

To examine the patient's eye movement

To measure the distance between the eyes

What is Traquair's Island of Vision?

A concept of visual field that is based on the skill of the examiner (correct)

A method of measuring visual field

A type of visual field defect

A type of perimetry

What is the main difference between the Confrontation Test and the Amsler Grid Test?

The method of measuring visual field Signup and view all the answers

What is the primary purpose of perimetry?

To detect visual field defects and measure visual field Signup and view all the answers

What is the typical distance between the patient and the test target during the Confrontation Test?

2-3 feet Signup and view all the answers

What does the Octopus Test measure?

The peripheral visual field Signup and view all the answers

What does the G program in the Octopus Test stand for?

Glaucoma assessment Signup and view all the answers

What is the purpose of charting the visual field in the Octopus Test?

To detect loss of central and peripheral vision and provide a map of visual field loss Signup and view all the answers

What is the name of the visual field defect that refers to the loss of vision in one eye?

Anopia Signup and view all the answers

What is the type of visual field defect that refers to the loss of one half of the vertical visual field?

Hemianopsia Signup and view all the answers

What is the term for the area where both the right and left monocular fields overlap?

Binocular vision field Signup and view all the answers

What is the approximate peripheral visual field in adults?

100° laterally, 60° medially, 60° upward, and 75° downward Signup and view all the answers

What is the reason for the different sizes of the monocular visual field?

Because of the supraorbital structures Signup and view all the answers

What is the location of the physiological scotoma or blind spot?

15° temporally Signup and view all the answers

How does the visual field develop in newborns?

It starts with a central visual field of 30° and develops peripheral visual field later Signup and view all the answers

What is the purpose of dividing the visual field into nasal and temporal hemifields?

To identify areas of visual field defects Signup and view all the answers

At what age do toddlers have a visual field similar to that of older kids and adults?

Toddlerhood Signup and view all the answers