The study aims to determine the impact of Meibomian Gland Dysfunction (MGD) dry eye on low contrast black/white (luminance) and cone color sensitivity performance and improvement in these functions after in-house non-invasive Meibomian gland (MG) expression.
This study offers possible benefits from gland expression to patients and subjects in terms of clinical measurements and care associated with meibomian gland dysfunction impacting all age ranges. Prior studies show that these interventions improve dry eye symptoms with intent to improve vision, low contrast color, and B/W vision after intervention in this study.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SUPPORTIVE_CARE
Masking
NONE
Enrollment
40
The procedure is performed with a sterile cotton tip applicator once in the upper and lower eyelids of the subject's choosing.
University of the Incarnate Word Rosenberg School of Optometry
San Antonio, Texas, United States
Change in Cone Contrast Sensitivity on the Cone Contrast Test (CCT, Innova Systems, Inc.)
This computer test measures the lowest contrast (contrast sensitivity) to see red, green and blue cone specific letters.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Response Time on Cone Contrast Test (CCT, Innova Systems, Inc.)
This computer test measures average response time in seconds to see red, green and blue low contrast letters.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Black White Contrast Sensitivity (Innova Systems, Inc)
This computer test measures the lowest contrast (contrast sensitivity) to see black/white letters.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Response Time on Black White Contrast Sensitivity Test (Innova Systems, Inc) Response Time
This computer test measures average response time in seconds to see low contrast black/white letters
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Visual Acuity Test at Low Contrast (Innova Systems, Inc)
This computer test measures the smallest low contrast letters which can be seen.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Response Time on Visual Acuity Test at Low Contrast (Innova Systems, Inc)
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This computer test measures average response time in seconds to see low contrast visual acuity letters
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Sensitivity on Cone Contrast Color Naming test (CCNT)
This computer test measures the lowest contrast (contrast sensitivity) to see red, green, blue and grey letters.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.
Change in Color Naming Accuracy on Cone Contrast Color Naming test (CCNT)
This computer test measures the accuracy of naming (number correct) low contrast red, green, blue and grey letters.
Time frame: This test will occur prior to the intervention (Meibomian gland expression) and immediately after this intervention.