slit teq Flashcards

1
Q

What is the purpose of diffuse direct illumination in slit lamp examination?

A

Used for general observation of the anterior eye, including eyelids, lashes, conjunctiva, sclera, and iris. Settings include maximum beam width, low magnification (6-16X), and a diffusing filter.

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2
Q

What is the corneal optic section technique used for in slit lamp exams?

A

Determines the depth of corneal opacities. Utilizes a narrow beam (0.5-1mm), low to high magnification, and observes layers like the epithelium and endothelium.

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2
Q

How is the parallelepiped technique used in slit lamp examination?

A

It’s used for scanning the cornea by setting the beam width at 2-4mm, using low magnification, and moving the beam across the cornea. This method helps view the cornea in detailed sections.

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3
Q

How is the crystalline lens optic section technique performed using a slit lamp?

A

Focuses on detecting lens opacities. Uses a narrow beam, low initial magnification increased to maximum, and involves viewing different bands within the lens, including Y sutures.

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4
Q

What is sclerotic scatter used for in slit lamp examinations?

A

Detects corneal edema and irregularities. Involves using a parallelepiped beam in a darkened room, focusing on the limbus to observe internal reflections and disruptions.

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5
Q

What is the purpose of Van Herick’s technique in slit lamp examination?

A

Estimates the anterior chamber depth, useful for assessing closed-angle glaucoma risk. Uses a narrow slit beam and high magnification, focusing on the space between the corneal endothelium and the anterior iris surface.p

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