Data Parameters

Field Format Example Description Min Max
ablation Float 147 Total ablation used for refractive laser surgery (in micrometer)
anterior_chamber_depth Float 3.02 Depth of the anterior chamber in millimeter preoperatively (from endothelium in phakic IOLs) 0 6
axial_length Float 25.34 Axial length in millimeter 15 39
biometry_formula Text SRK/T Biometry formula used (format: HofferQ, Haigis, SRK/T, Holladay1, Holladay2)
biometry_type Integer 346 ID of biometry-device (see Resource Devices for list of devices)
budva_pre Float Binocular uncorrected distance visual acuity in decimal preoperatively 0 2
budva_1m Float 0.1 Binocular uncorrected distance visual acuity in decimal at 1 month follow-up 0 2
budva_3m Float 0.1 Binocular uncorrected distance visual acuity in decimal at 3 months follow-up 0 2
budva_6m Float 0.1 Binocular uncorrected distance visual acuity in decimal at 6 months follow-up 0 2
budva_12m Float 0.1 Binocular uncorrected distance visual acuity in decimal at 12 months follow-up 0 2
budva_24m Float 0.1 Binocular uncorrected distance visual acuity in decimal at 24 months follow-up 0 2
bunva_pre Float 0.1 Binocular uncorrected near visual acuity in decimal preoperatively 0 2
bunva_1m Float 0.4 Binocular uncorrected near visual acuity in decimal at 1 month follow-up 0 2
bunva_3m Float 0.5 Binocular uncorrected near visual acuity in decimal at 3 month follow-up 0 2
bunva_6m Float 0.63 Binocular uncorrected near visual acuity in decimal at 6 month follow-up 0 2
bunva_12m Float 0.8 Binocular uncorrected near visual acuity in decimal at 12 month follow-up 0 2
bunva_24m Float 1 Binocular uncorrected near visual acuity in decimal at 24 month follow-up 0 2
cdva_pre Float 0.2 (Spectacle/Best) Corrected distance visual acuity in decimal preoperatively (monocular) 0 2
cdva_7d Float 0.25 (Spectacle/Best) Corrected distance visual acuity in decimal at 7 days follow-up (monocular) 0 2
cdva_1m Float 0.33 (Spectacle/Best) Corrected distance visual acuity in decimal at 1 month follow-up (monocular) 0 2
cdva_3m Float 0.4 (Spectacle/Best) Corrected distance visual acuity in decimal at 3 month follow-up (monocular) 0 2
cdva_6m Float 0.5 (Spectacle/Best) Corrected distance visual acuity in decimal at 6 month follow-up (monocular) 0 2
cdva_12m Float 0.63 (Spectacle/Best) Corrected distance visual acuity in decimal at 12 month follow-up (monocular) 0 2
cdva_24m Float 0.8 (Spectacle/Best) Corrected distance visual acuity in decimal at 24 month follow-up (monocular) 0 2
cid Text kiiegd798lokj Unique identifier of the case
city Text Zürich
cnva_pre Float 0.2 (Spectacle/Best) Corrected near visual acuity in decimal preoperatively (monocular) 0 2
cnva_1m Float 0.33 (Spectacle/Best) Corrected near visual acuity in decimal at 1 month follow-up (monocular) 0 2
cnva_3m Float 0.4 (Spectacle/Best) Corrected near visual acuity in decimal at 3 month follow-up (monocular) 0 2
cnva_6m Float 0.5 (Spectacle/Best) Corrected near visual acuity in decimal at 6 month follow-up (monocular) 0 2
cnva_12m Float 0.63 (Spectacle/Best) Corrected near visual acuity in decimal at 12 month follow-up (monocular) 0 2
cnva_24m Float 0.8 (Spectacle/Best) Corrected near visual acuity in decimal at 24 month follow-up (monocular) 0 2
code Text Trial 123 Code that was given to this treatment (e.g. in relation to a trial)
comment Text First time Femto Comment that was given to this treatment (e.g. new version of software, POH, Risk Factor, PCH)
comorbidity Text
complications_intraop Text none Intraoperative complications, use text, following some examples:

For laser treatments
  • incomplete flap
  • buttonholed flap
  • hard OBL
  • diffuse OBL
  • diffuse OBL
For IOL treatments
  • ACR
  • PCR
  • vitreous loss
  • iris prolapse
  • endothelial damage
complications_postop Text dry eyes Postoperative complications, use text, following some examples:

For laser treatments
  • flap microstriae
  • epithelial ingrowth
  • DLK stage 1
  • mild interface haze
  • moderate SPK
For IOL treatments
  • halo
  • endophthalmitis
  • macular edema
cycloplegic_ax0 Integer 90 Cylinder axis from cycloplegic refraction preoperatively 0 180
cycloplegic_cyl0 Float -1.5 Cylinder value from cycloplegic refraction preoperatively -20 20
cycloplegic_sph0 Float -4 Sphere value from cycloplegic refraction preoperatively -25 25
date_operation Date 2021-08-26 Date of operation in Format YYYY-MM-DD
dob Date 2000-04-03 Date of birth of your patient
dominant_eye Text yes State if this eye is (distance) dominant; entry is 'yes' or leave empty
email Text [email protected]
endothelial_cell_count_pre Integer 2978 Endothelial cell count preoperatively 500 3500
endothelial_cell_count_3m Integer 2788 Endothelial cell count at 3 months follow-up 500 3500
eye text od (R) od (R) or os (L)
firstday_edema Text at incision only Corneal edema at day 1 after surgery (text, e.g. none, diffuse mild, at incision only)
firstday_iop Integer 24 Intraocular pressure in mmHg at day 1 after surgery 0 80
firstday_pain Text mild pain Discomfort and irritation at day 1 after surgery (text, e.g. none, moderate pain, yesterday only)
firstday_udva Float 0.8 Uncorrected distance visual acuity (UDVA) in decimal at day 1 after surgery 0 2
firstname Text Peter Firstname of your patient
flap_diameter Float 9.5 Diameter of the flap in millimeter 2 16
flap_thickness Integer 140 Thickness of the flap in microns 0 300
hinge Text superior Hinge of the flap (format: superior, temporal, inferior, nasal, other
incision_axis Integer 91 Axis (meridian) of the main incision in degrees 0 360
incision_length Float 2.85 Size (width) of the main incision in millimeter 1 10
incision_type Text Type of main incision (e.g. clear corneal, limbal corneal, scleral corneal,...)
intervention first Intervention (format: first, second, third, fourth) Support interventions (use exact wording, a second intervention = first enhancement):
  • first
  • second
  • third
  • forth
iol Integer 80 Supported IOLs (submit only the ID, full list of IDs: see devices), e.g.
  • ID=80 (Alcon AcrySof PanOptix TFNT00)
  • ID=392 (HOYA Vivinex XC1-SP)
iol_axis_postop Integer 85 Measured postoperative axis of the toric IOL in degrees 0 180
iol_axis_preop Integer 90 Intended axis of placement of toric IOLs (preoperative) in degrees 0 180
iol_constant Float 119.2 IOL constant used for calculation of above sphere IOL power (usually SRK/T; but can be a0 of Haigis 110 130
iol_constant0 0.9 Float a0 of Haigis formula -5 5
iol_constant1 Float 0.4 a1 of Haigis formula -5 5
iol_constant2 Float 0.0 a2 of Haigis formula -5 5
iol_implant_location Text capsular bag Location of lens placement (e.g. capsular bag, sulcus, iris-fixed,...)
iol_power_cylinder Float 3 Cylinder power of the IOL in diopters -10 10
iol_power_sphere Float 22.5 Spherical power of the intraocular lens (IOL) in diopters -16 44
iop_3m Integer 16 Intraocular pressure in mmHg at 3 months follow-up 0 80
iop_pre Integer 19 Intraocular pressure in mmHg preoperatively 0 80
k_flat_pre Float 43.2 Flatter K-value in diopters preopratively 20 70
k_flat_1m Float 42.6 Flatter K-value in diopters at 1 month follow-up 20 70
k_flat_3m Float 42.5 Flatter K-value in diopters at 3 months follow-up 20 70
k_flat_6m Float 42.4 Flatter K-value in diopters at 6 months follow-up 20 70
k_flat_12m Float 42.4 Flatter K-value in diopters at 12 months follow-up 20 70
k_flat_24m Float 40.4 Flatter K-value in diopters at 24 months follow-up 20 70
k_max_pre Float 45.9 Maximal measured (topographic) K-value in diopters preopratively 20 80
k_max_1m Float 45.5 Maximal measured (topographic) K-value in diopters at 1 month follow-up 20 80
k_max_3m Float 45.4 Maximal measured (topographic) K-value in diopters at 3 months follow-up 20 80
k_max_6m Float 45.3 Maximal measured (topographic) K-value in diopters at 6 months follow-up 20 80
k_max_12m Float 45.2 Maximal measured (topographic) K-value in diopters at 12 months follow-up 20 80
k_max_24m Float 45.1 Maximal measured (topographic) K-value in diopters at 24 months follow-up 20 80
k_steep_pre Float 44.9 Steeper K-value in diopters preopratively 20 70
k_steep_1m Float 43.9 Steeper K-value in diopters at 1 month follow-up 20 70
k_steep_3m Float 43.8 Steeper K-value in diopters at 3 months follow-up 20 70
k_steep_6m Float 43.7 Steeper K-value in diopters at 6 months follow-up 20 70
k_steep_12m Float 43.6 Steeper K-value in diopters at 12 months follow-up 20 70
k_steep_24m Float 43.5 Steeper K-value in diopters at 24 months follow-up 20 70
k_steep_axis_pre Float 89 Axis of the steeper K-value in degrees preopratively 0 180
k_steep_axis_1m Float 88 Axis of the steeper K-value in degrees at 1 month follow-up 0 180
k_steep_axis_3m Float 87 Axis of the steeper K-value in degrees at 3 months follow-up 0 180
k_steep_axis_6m Float 86 Axis of the steeper K-value in degrees at 6 months follow-up 0 180
k_steep_axis_12m Float 85 Axis of the steeper K-value in degrees at 12 months follow-up 0 180
k_steep_axis_24m Float 84 Axis of the steeper K-value in degrees at 24 months follow-up 0 180
laser_excimer Integer 3 Supported Laser (submit only the ID of the laser):
  • ID=1 (Alcon WaveLight Allegretto)
  • ID=2 (Alcon WaveLight Eye-Q)
  • ID=3 (Alcon WaveLight EX500)
  • ID=6 (Johnson & Johnson VISX S4)
  • ID=8 (Ziemer Aquariuz)
  • ID=9 (Ziemer LDV)
  • ID=10 (Schwind Amaris 500E)
  • ID=11 (Schwind Amaris 750S)
  • ID=12 (Schwind Amaris 1050RS)
  • ID=13 (Schwind ATOS)
  • ID=15 (ZEISS Mel 80)
  • ID=16 (ZEISS Mel 90)
  • ID=17 (ZEISS VisuMax)
  • ID=19 (Bausch Technolas 217)
  • ID=21 (NIDEK EC-5000)
laser_mode Text WFO Supported laser modes (overview, use exact wording):
  • Alcon lasers: WFO, CONTOURA, Topography guided, Wavefront guided
  • VISX lasers: Conventional, Wavefront WaveScan, Wavefront iDesign
  • Schwind lasers: Aspheric aberration-free, Corneal wavefront, Ocular wavefront
  • ZEISS excimer lasers: Aspheric
  • ZEISS femto laser: SMILE
  • Bausch Technolas laser: Aspheric
  • NIDEK laser: Aspheric
laser_optical_zone Float 6.3 Diameter of the opical zone in millimeter 1 10
laser_transition_zone Float 8.3 Diameter of the transition zone in millimeter 1 10
laser_treatment_axis Integer 85 Axis of the cylinder of the refractive treatment in degrees 0 180
laser_treatment_cylinder Float -1.25 Cylinder amount of the refractive treatment in diopters -20 20
laser_treatment_sphere Float -3.5 Sphere amount of the refractive treatment in diopters -25 25
manifest_axis_pre Integer 90 Axis of the manifest cylinder (in degrees) preoperatively 0 180
manifest_axis_7d Integer 90 Axis of the manifest cylinder (in degrees) at 7 day follow-up 0 180
manifest_axis_1m Integer 90 Axis of the manifest cylinder (in degrees) at 1 month follow-up 0 180
manifest_axis_3m Integer 90 Axis of the manifest cylinder (in degrees) at 3 months follow-up 0 180
manifest_axis_6m Integer 90 Axis of the manifest cylinder (in degrees) at 6 months follow-up 0 180
manifest_axis_12m Integer 90 Axis of the manifest cylinder (in degrees) at 12 months follow-up 0 180
manifest_axis_24m Integer 90 Axis of the manifest cylinder (in degrees) at 24 months follow-up 0 180
manifest_cylinder_pre Float -1.5 Manifest cylinder (subjective refraction in diopters) preoperatively -20 20
manifest_cylinder_7d Float -0.25 Manifest cylinder at 7 day follow-up -20 20
manifest_cylinder_1m Float -0.5 Manifest cylinder at 1 month follow-up -20 20
manifest_cylinder_3m Float -0.25 Manifest cylinder at 3 months follow-up -20 20
manifest_cylinder_6m Float -0.5 Manifest cylinder at 6 months follow-up -20 20
manifest_cylinder_12m Float -0.5 Manifest cylinder at 12 months follow-up -20 20
manifest_cylinder_24m Float -0.5 Manifest cylinder at 24 months follow-up -20 20
manifest_sphere_pre Float -3.75 Manifest sphere (subjective refraction in diopters) preoperatively -25 25
manifest_sphere_7d Float -0.5 Manifest sphere at 7 day follow-up -25 25
manifest_sphere_1m Float -0.25 Manifest sphere at 1 month follow-up -25 25
manifest_sphere_3m Float -0.25 Manifest sphere at 3 months follow-up -25 25
manifest_sphere_6m Float -0.5 Manifest sphere at 6 months follow-up -25 25
manifest_sphere_12m Float 0 Manifest sphere at 12 months follow-up -25 25
manifest_sphere_24m Float -0.25 Manifest sphere at 24 months follow-up -25 25
marker Char x Marking of the case ('x' or empty), often used for groups of cases (e.g. outliers)
method Test LASIK Support methods include (use exact wording):

For laser treatments:
  • LASIK
  • PRK
  • Trans-PRK
  • LASEK
  • Lenticule Extraction
For IOL treatments:
  • Phaco Cat
  • Phaco RLE
  • Femto Phaco Cat
  • Femto Phaco RLE
  • Phakic IOL
  • ICL
microkeratome Integer 362 Supported microkeratomes (submit only the ID, full list of IDs: see devices), e.g.
  • ID=363 (Johnson&Johnson Intralase iFS)
  • ID=385 (Alcon WaveLight FS200)
  • ID=390 (Ziemer LDV Z8)
nomogram Text Athens Type of nomogram or protocol used for the treatment (e.g. the Athens protocol for cross linking)
notes Text VIP Patient Any kind of note you want to store for your patient
operation_details Text multizone Additional information to the treatment (e.g. 'multizone' in LASIK or '25min' in CXL)
pachymetry_central_pre Integer 555 Central corneal thickness (pachymetry) in microns preoperatively 200 800
pachymetry_central_3m Integer 523 entral corneal thickness (pachymetry) in microns at 3 months follow-up 200 800
pachymetry_central_12m Integer 522 entral corneal thickness (pachymetry) in microns at 12 months follow-up 200 800
pachymetry_central_24m Integer 521 entral corneal thickness (pachymetry) in microns at 24 months follow-up 200 800
pachymetry_thinnest_pre Integer 545 Thinnest corneal thickness (pachymetry) in microns preoperatively 200 800
pachymetry_thinnest_3m Integer 513 Thinnest corneal thickness (pachymetry) in microns at 3 months follow-up 200 800
pachymetry_thinnest_12m Integer 512 Thinnest corneal thickness (pachymetry) in microns at 12 months follow-up 200 800
pachymetry_thinnest_24m Integer 511 Thinnest corneal thickness (pachymetry) in microns at 24 months follow-up 200 800
phone Text +417522322424
pid Text kuwe542xege ID of your patient
postcode Text 8000
pupil_photopic_pre Integer 6 Photopic pupil size in millimeter preoperatively 1 10
pupil_scotopic_pre Integer 4 Scotopic pupil size in millimeter preoperatively 1 10
satisfaction Integer 4 Overall satisfaction (scored: 1 to 5, poor to excellent) 1 5
sex Char w m or w
surname Text Miller The surname of your patient
street Text Street XY
target_cylinder Float -0.13 Cylinder of the target refraction -15 15
target_sphere Float -0.26 Sphere of the target refraction -20 20
topography_axis_pre Integer 92 Corneal cylinder axis in diopters preoperatively from topography (e.g. from Topolizer) 0 180
topography_cylinder_pre Float -1.57 Corneal cylinder value in diopters preoperatively from topography (e.g. from Topolizer) -20 20
udva_pre Float 0.1 Uncorrected distance visual acuity in decimal preoperatively (monocular) 0 2
udva_7d Float 0.33 Uncorrected distance visual acuity in decimal at 7 days follow-up (monocular) 0 2
udva_1m Float 0.4 Uncorrected distance visual acuity in decimal at 1 month follow-up (monocular) 0 2
udva_3m Float 0.5 Uncorrected distance visual acuity in decimal at 3 months follow-up (monocular) 0 2
udva_6m Float 0.63 Uncorrected distance visual acuity in decimal at 6 months follow-up (monocular) 0 2
udva_12m Float 0.8 Uncorrected distance visual acuity in decimal at 12 months follow-up (monocular) 0 2
udva_24m Float 1 Uncorrected distance visual acuity in decimal at 24 months follow-up (monocular) 0 2
uiva_pre Float 0.1 Uncorrected intermediate visual acuity in decimal preoperatively (monocular) 0 2
uiva_1m Float 0.4 Uncorrected intermediate visual acuity in decimal at 1 month follow-up (monocular) 0 2
uiva_3m Float 0.5 Uncorrected intermediate visual acuity in decimal at 3 months follow-up (monocular) 0 2
uiva_6m Float 0.63 Uncorrected intermediate visual acuity in decimal at 6 months follow-up (monocular) 0 2
uiva_12m Float 0.8 Uncorrected intermediate visual acuity in decimal at 12 months follow-up (monocular) 0 2
uiva_24m Float 1 Uncorrected intermediate visual acuity in decimal at 24 months follow-up (monocular) 0 2
uiva_dist Integer 80 Distance in cm used for assessment of uncorrected intermediate visual acuity 50 100
unva_pre Float 0.1 Uncorrected near visual acuity in decimal preoperatively (monocular) 0 2
unva_1m Float 0.4 Uncorrected near visual acuity in decimal at 1 month follow-up (monocular) 0 2
unva_3m Float 0.5 Uncorrected near visual acuity in decimal at 3 months follow-up (monocular) 0 2
unva_6m Float 0.63 Uncorrected near visual acuity in decimal at 6 months follow-up (monocular) 0 2
unva_12m Float 0.8 Uncorrected near visual acuity in decimal at 12 months follow-up (monocular) 0 2
unva_24m Float 1 Uncorrected near visual acuity in decimal at 24 months follow-up (monocular) 0 2
unva_dist Integer 40 Distance in cm used for assessment of uncorrected near visual acuity 20 60
wavefront_axis_pre Integer 88 Wavefront refraction cylinder axis in degrees preoperatively 0 180
wavefront_blur_pre Integer 14 (Wavefront) Blur preoperatively -20 20
wavefront_coma_pre Float 0.18 Coma in diopters preoperatively
wavefront_cylinder_pre Float -1.19 Wavefront refraction cylinder value in diopters preoperatively -20 20
wavefront_hoa_pre Float 0.4 Higher order aberrations in diopters preoperatively -100 100
wavefront_sa_pre Float 0.16 Spherical aberration in diopters preoperatively
wavefront_sphere_pre Float -3.65 Wavefront refraction sphere value in diopters preoperatively -25 25
wavefront_trefoil_pre Float 0.03 Trefoil in diopters preoperatively