There is a great need for precise and repeatable measurements of the choroidal thickness. Including the diurnal physiological changes, accommodation and refractive error impact on those measurements.
Study Type
OBSERVATIONAL
Enrollment
250
Department of Optics and Photonics
Wroclaw, Poland
Submacular choroidal thickness
OCT EDI recorded scans will be proceed with the custom-made software to determine choroidal thickness in the submacular region.
Time frame: 1 day
Peripapillar choroidal thickness
OCT EDI recorded scans will be proceed with the custom-made software to determine choroidal thickness in the peripapillar region.
Time frame: 1 day
Axial length of the globe
Measured with optical biometer (Lenstar)
Time frame: 1 day
Anterior chamber depth - optical biometry
Measured with optical biometer (Lenstar)
Time frame: 1 day
Phakic lens thickness
Measured with optical biometer (Lenstar)
Time frame: 1 day
White to white diameter
Measured with optical biometer (Lenstar)
Time frame: 1 day
Angle to angle diameter of anterior chamber
Measured with optical coherent tomography for anterior chamber
Time frame: 1 day
Anterior chamber depth - OCT
Measured with optical coherent tomography for anterior chamber
Time frame: 1 day
Corneal keratometry (steep meridian and its axis and flat meridian with its axis)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Keratometry from autorefractokeratometer, topography or tomography recordings, radius measured in mm, magnitude of corneal astigmatism measured in local changes of dioptric power.
Time frame: 1 day
Spherical ametropia with cylindrical power of correcting lenses
Subjective refraction made by trained optometrist. Spherical ametropia measured by dioptric power of spherical equivalent lens and magnitude of astigmatism measured in cylindrical dioptries of correcting lens with its axis. Mode of notation: sphero-cylinder with negative cylinder (e.g. +0.50DS -0.50DC 180ax)
Time frame: 1 day
Best-corrected visual acuity
examined on ETDRS charts different for right and left eye
Time frame: 1 day