93120-4
ClinicalLeft eye Dark-mediated rod adaptation time
Definition
This term was created for, but is not limited in use to, the Rod Intercept™ (RI™) as measured by the AdaptDx®. Rod Intercept™ is the duration between exposure to a bright light (photo bleaching using a flash) and recovery of a visual sensitivity by the eye's rod photoreceptors to a threshold of 3.0 log units of attenuation of the stimulus. The rod-intercept time is used to quantify rod-mediated dark adaptation (DA), and slower DA is associated with the early phases of age-related macular degeneration (AMD). [PMID: 26522707] Rod Intercept™ (RI™) © 2019 MacuLogix, Inc. Used with permission.
LOINC 6-Axis Classification
Component
Dark-mediated rod adaptation time
Property
Time
Time Aspect
Pt
System
Eye.left
Scale Type
Qn
Method Type
N/A
Details
Class
EYE.PX
Order/Observation
Observation
Short Name
L eye Dark rod adaptation tm
Related Names
Frequently Asked Questions
What is LOINC code 93120-4?
LOINC code 93120-4 identifies "Left eye Dark-mediated rod adaptation time". This term was created for, but is not limited in use to, the Rod Intercept™ (RI™) as measured by the AdaptDx®. Rod Intercept™ is the duration between exposure to a bright light (photo bleaching using a flash) and recovery of a visual sensitivity by the eye's rod photoreceptors to a threshold of 3.0 log units of attenuation of the stimulus. The rod-intercept time is used to quantify rod-mediated dark adaptation (DA), and slower DA is associated with the early phases of age-related macular degeneration (AMD). [PMID: 26522707] Rod Intercept™ (RI™) © 2019 MacuLogix, Inc. Used with permission.
What does 93120-4 measure?
This code measures Dark-mediated rod adaptation time in Eye.left. It belongs to the EYE.PX class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.