Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Change between pre-operative CDVA and post-operative UDVA
The UDVA in decimal notation is defined as the inverse of the minimum angle of resolution (MAR) in a patients eye achieved without correction lenses or spectacles, measured over a distance of 4-6 metres by standardized letter charts .
The CDVA is defined as the inverse of the minimum angle of resolution (MAR) in a patient's eye achieved with the best sphero-cylindrical prescription in trial lenses or spectacles, measured analogously to UDVA.
Difference between attempted versus achieved Manifest Refraction Spherical Equivalent (MRSE) after 1 week post surgery.
The MRSE is defined as the mean refractive deficit in diopters (D) over two main meridians as assessed by monocular sphero-cylindrical refraction (manifest refraction).
The manifest refraction is a set of three numerical, continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
MRSE is deduced from the manifest refraction as follows:
MRSE = MRSPH + ½ x MRCYL
Difference between attempted versus achieved Manifest Refraction Spherical Equivalent (MRSE) after 1 month post surgery.
The MRSE is defined as the mean refractive deficit in diopters (D) over two main meridians as assessed by monocular sphero-cylindrical refraction (manifest refraction).
The manifest refraction is a set of three numerical, continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
MRSE is deduced from the manifest refraction as follows:
MRSE = MRSPH + ½ x MRCYL
Difference between attempted versus achieved Manifest Refraction Spherical Equivalent (MRSE) after 3 months post surgery.
The MRSE is defined as the mean refractive deficit in diopters (D) over two main meridians as assessed by monocular sphero-cylindrical refraction (manifest refraction).
The manifest refraction is a set of three numerical, continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
MRSE is deduced from the manifest refraction as follows:
MRSE = MRSPH + ½ x MRCYL
Difference between attempted versus achieved Manifest Refraction Spherical Equivalent (MRSE) after 6 months post surgery.
The MRSE is defined as the mean refractive deficit in diopters (D) over two main meridians as assessed by monocular sphero-cylindrical refraction (manifest refraction).
The manifest refraction is a set of three numerical, continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
MRSE is deduced from the manifest refraction as follows:
MRSE = MRSPH + ½ x MRCYL
Difference between attempted versus achieved Manifest Refraction Spherical Equivalent (MRSE) after 12 months post surgery.
The MRSE is defined as the mean refractive deficit in diopters (D) over two main meridians as assessed by monocular sphero-cylindrical refraction (manifest refraction).
The manifest refraction is a set of three numerical, continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
MRSE is deduced from the manifest refraction as follows:
MRSE = MRSPH + ½ x MRCYL
Percentage of eyes within ±0.5 D, and ±1 D of the attempted MRSE after 1 week post surgery.
Percentage of eyes within ±0.5 D, and ±1 D of the attempted MRSE after 1 month post surgery.
Percentage of eyes within ±0.5 D, and ±1 D of the attempted MRSE after 3 months post surgery.
Percentage of eyes within ±0.5 D, and ±1 D of the attempted MRSE after 6 months post surgery.
Percentage of eyes within ±0.5 D, and ±1 D of the attempted MRSE after 12 months post surgery.
Observed difference in manifest refraction after 1 week post surgery.
The manifest refraction is a set of three numerical continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
Observed difference in manifest refraction after 1 month post surgery.
The manifest refraction is a set of three numerical continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
Observed difference in manifest refraction after 3 months post surgery.
The manifest refraction is a set of three numerical continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
Observed difference in manifest refraction after 6 months post surgery.
The manifest refraction is a set of three numerical continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
Observed difference in manifest refraction after 12 months post surgery.
The manifest refraction is a set of three numerical continues variables (Spherical dioptres - MRSPH, cylindrical dioptres - MRCYL, cylindrical axis in degrees).
Difference (in terms of cylindrical power and orientation of meridians) between Target Induced Astigmatism (TIA) versus Surgically Induced Astigmatism (SIA) after 1 week post surgery.
Difference (in terms of cylindrical power and orientation of meridians) between pre-operative and post-operative magnitude of astigmatism after 1 month post surgery.
Difference (in terms of cylindrical power and orientation of meridians) between pre-operative and post-operative magnitude of astigmatism after 3 months post surgery.
Difference (in terms of cylindrical power and orientation of meridians) between pre-operative and post-operative magnitude of astigmatism after 6 months post surgery.
Difference (in terms of cylindrical power and orientation of meridians) between pre-operative and post-operative magnitude of astigmatism after 12 months post surgery.
Angle of error, defined as the angle described by the vectors of the achieved correction (SIA) versus the intended correction (TIA) after 1 week post surgery.
The angle of error is positive if the achieved correction is on an axis counterclockwise (CCW) to where it was intended and negative if the achieved correction is clockwise (CW) to its intended axis.
The astigmatism vector is the combination of the magnitude, MRCYL, and the cylindrical axis in degrees and will be assessed as described above. Vector analysis will be performed according to Alpins et al 2001 and Thibos et al 2001.
Angle of error, defined as the angle described by the vectors of the achieved correction (SIA) versus the intended correction (TIA) after 1 month post surgery.
The angle of error is positive if the achieved correction is on an axis counterclockwise (CCW) to where it was intended and negative if the achieved correction is clockwise (CW) to its intended axis.
The astigmatism vector is the combination of the magnitude, MRCYL, and the cylindrical axis in degrees and will be assessed as described above. Vector analysis will be performed according to Alpins et al 2001 and Thibos et al 2001.
Angle of error, defined as the angle described by the vectors of the achieved correction (SIA) versus the intended correction (TIA) after 3 months post surgery.
The angle of error is positive if the achieved correction is on an axis counterclockwise (CCW) to where it was intended and negative if the achieved correction is clockwise (CW) to its intended axis.
The astigmatism vector is the combination of the magnitude, MRCYL, and the cylindrical axis in degrees and will be assessed as described above. Vector analysis will be performed according to Alpins et al 2001 and Thibos et al 2001.
Angle of error, defined as the angle described by the vectors of the achieved correction (SIA) versus the intended correction (TIA) after 6 months post surgery.
The angle of error is positive if the achieved correction is on an axis counterclockwise (CCW) to where it was intended and negative if the achieved correction is clockwise (CW) to its intended axis.
The astigmatism vector is the combination of the magnitude, MRCYL, and the cylindrical axis in degrees and will be assessed as described above. Vector analysis will be performed according to Alpins et al 2001 and Thibos et al 2001.
Angle of error, defined as the angle described by the vectors of the achieved correction (SIA) versus the intended correction (TIA) after 12 months post surgery.
The angle of error is positive if the achieved correction is on an axis counterclockwise (CCW) to where it was intended and negative if the achieved correction is clockwise (CW) to its intended axis.
The astigmatism vector is the combination of the magnitude, MRCYL, and the cylindrical axis in degrees and will be assessed as described above. Vector analysis will be performed according to Alpins et al 2001 and Thibos et al 2001.