slit teq

Question 1

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

Answer 1

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.

Question 2

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

Answer 2

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.

Question 2

How is the parallelepiped technique used in slit lamp examination?

Answer 2

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.

Question 3

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

Answer 3

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.

Question 4

What is sclerotic scatter used for in slit lamp examinations?

Answer 4

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

Question 5

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

Answer 5

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