slit teq Flashcards
What is the purpose of diffuse direct illumination in slit lamp examination?
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.
What is the corneal optic section technique used for in slit lamp exams?
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.
How is the parallelepiped technique used in slit lamp examination?
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.
How is the crystalline lens optic section technique performed using a slit lamp?
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.
What is sclerotic scatter used for in slit lamp examinations?
Detects corneal edema and irregularities. Involves using a parallelepiped beam in a darkened room, focusing on the limbus to observe internal reflections and disruptions.
What is the purpose of Van Herick’s technique in slit lamp examination?
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