The purpose of this study is to compare the measurements obtained with two different biometers, UNITY Dx and Anterion. In eye care, a biometer is a device that uses laser technology to take highly precise measurements of the eye's internal structures. It is most frequently used to help determine the exact power of the intraocular lens (IOL) needed before cataract removal.
The study population will consist of male and female adult subjects with a normal cornea (up to 10 subjects), keratoconus (up to 10 subjects), prior corneal laser vision correction (up to 10 subjects), current and habitual contact lens wear (up to 10 subjects), or dry eye (up to 10 subjects). In this single visit study, subjects will have data collected on one eye (unilateral) only. If both eyes meet the entry criteria, the right eye will be designated as the study eye.
Study Type
OBSERVATIONAL
Enrollment
50
Investigational non-contact, non-invasive ophthalmic imaging and analysis device used for visualization of ocular structures and their optical properties
Commercially available non-contact, non-invasive ophthalmic imaging and analysis device used for visualization of ocular structures and their optical properties
The Eye Institute of Utah
Salt Lake City, Utah, United States
RECRUITINGRegression-Based Axial Length (R-AL)
Regression-based Axial Length (R-AL) is the distance from the anterior surface of the cornea to the retina at the back of the eye, measured along the visual axis. R-AL will be measured by the device and reported in microns.
Time frame: Day 1
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