This is a generated document describing the dataset. It provides an overview of the variables in the dataset with the appropriate visualisations and some basic summary statistics. \(~\)

Variable Description
y9ceye1perf Visual Acuity
y9ceye1distod1 DIstance, Unaided - OD
y9ceye1distos1 DIstance, Unaided - OS
y9ceye1distod2 DIstance, Habitual/Aided (if applicable) - OD
y9ceye1distos2 DIstance, Habitual/Aided (if applicable) - OS
y9ceye1co Remarks
y9ceye2drugalrg Drug Allergy Please list all known drug allergies. Indicate NIL if none.
y9ceye2perf Eyedrops
yceye2co Remarks
y9ceye3reye Right Eye
y9ceye3leye Left Eye
y9ceye3fulldil Achieved full dilation
y9ceye4perf IOL Master
y9ceye4co Remarks
y9ceye4od_al OD - AL
y9ceye4od_al1 OD - AL1
y9ceye4od_al2 OD - AL2
y9ceye4od_al3 OD - AL3
y9ceye4od_al4 OD - AL4
y9ceye4od_al5 OD - AL5
y9ceye4od_al6 OD - AL6
y9ceye4od_al7 OD - AL7
y9ceye4od_al8 OD - AL8
y9ceye4od_al9 OD - AL9
y9ceye4od_al10 OD - AL10
y9ceye4os_al OS - AL
y9ceye4os_al1 OS - AL1
y9ceye4os_al2 OS - AL2
y9ceye4os_al3 OS - AL3
y9ceye4os_al4 OS - AL4
y9ceye4os_al5 OS - AL5
y9ceye4os_al6 OS - AL6
y9ceye4os_al7 OS - AL7
y9ceye4os_al8 OS - AL8
y9ceye4os_al9 OS - AL9
y9ceye4os_al10 OS - AL10
y9ceye4kerod_mv1 MV1 - OD
y9ceye4keros_mv1 MV1 - OS
y9ceye4kerod_mv2 MV2 -OD
y9ceye4keros_mv2 MV2 - OS
y9ceye4ker1od_r1 KER1 - OD - R1
y9ceye4ker1oddeg_r1 KER1 - OD - Degree
y9ceye4ker1osdeg_r1 KER1 - OS - Degree
y9ceye4ker1od_r2 KER1 - OD - R2
y9ceye4ker1oddeg_r2 KER2 - OD - Degree
y9ceye4ker1osdeg_r2 KER2 - OS - Degree
y9ceye4ker1od_k KER1 - OD - K
y9ceye4ker1oddeg_k KER1 K - OD - Degree
y9ceye4ker1osdeg_k KER1 K - OS - Degree
y9ceye4ker1os_r1 KER1 - OS - R1
y9ceye4ker1os_r2 KER1 - OS - R2
y9ceye4ker1os_k KER1 - OS - K
y9ceye4ker2od_r1 KER2 - OD - R1
y9ceye4ker2oddeg_r1 KER2 - OD - Degree
y9ceye4ker2osdeg_r1 KER2 - OS - Degree
y9ceye4ker2od_r2 KER2 - OD - R2
y9ceye4ker2od_k KER2 - OD - K
y9ceye4ker2os_r1 KER2 - OS - R1
y9ceye4ker2os_r2 KER2 - OS - R2
y9ceye4ker2oddeg_r2 KER2 - OD - Degree
y9ceye4ker2osdeg_r2 KER2 - OS - Degree
y9ceye4ker2os_k KER2 - OS - K
y9ceye4ker2oddeg_k KER2 K - OD - Degree
y9ceye4ker2osdeg_k KER2 K - OS - Degree
y9ceye4ker3od_r1 KER3 - OD - R1
y9ceye4ker3oddeg_r1 KER3 - OD - Degree
y9ceye4ker3osdeg_r1 KER3 - OS - Degree
y9ceye4ker3od_r2 KER3 - OD - R2
y9ceye4ker3oddeg_r2 KER3 - OD - Degree
y9ceye4ker3osdeg_r2 KER3 - OS - Degree
y9ceye4ker3od_k KER3 - OD - K
y9ceye4ker3os_r1 KER3 - OS - R1
y9ceye4ker3os_r2 KER3 - OS - R2
y9ceye4ker3os_k KER3 - OS -K
y9ceye4ker3oddeg_k KER3 K - OD - Degree
y9ceye4ker3osdeg_k KER3 K - OS - Degree
y9ceye4acdod OD - ACD
y9ceye4acdod1 OD - ACD1
y9ceye4acdod2 OD - ACD2
y9ceye4acdod3 OD - ACD3
y9ceye4acdod4 OD - ACD4
y9ceye4acdod5 OD - ACD5
y9ceye4acdos OS - ACD
y9ceye4acdos1 OS - ACD1
y9ceye4acdos2 OS - ACD2
y9ceye4acdos3 OS - ACD3
y9ceye4acdos4 OS - ACD4
y9ceye4acdos5 OS - ACD5
y9ceye5perf Cycloplegic Autorefraction
y9ceye5reye Right Eye
y9ceye5leye Left Eye
y9ceye5vd Vertex Distance
y9ceye5reyeref1sph Right Eye - Refractive Measure 1 - Spherical
y9ceye5reyeref1cyl Right Eye - Refractive Measure 1 - Cylinder
y9ceye5reyeref1ax Right Eye - Refractive Measure 1 - Axis
y9ceye5reyeref2sph Right Eye - Refractive Measure 2 - Spherical
y9ceye5reyeref2cyl Right Eye - Refractive Measure 2 - Cylinder
y9ceye5reyeref2ax Right Eye - Refractive Measure 2 - Axis
y9ceye5reyeref3sph Right Eye - Refractive Measure 3 - Spherical
y9ceye5reyeref3cyl Right Eye - Refractive Measure 3 - Cylinder
y9ceye5reyeref3ax Right Eye - Refractive Measure 3 - Axis
y9ceye5reyeref4sph Right Eye - Refractive Measure 4 - Spherical
y9ceye5reyeref4cyl Right Eye - Refractive Measure 4 - Cylinder
y9ceye5reyeref4ax Right Eye - Refractive Measure 4 - Axis
y9ceye5reyeref5sph Right Eye - Refractive Measure 5 - Spherical
y9ceye5reyeref5cyl Right Eye - Refractive Measure 5 - Cylinder
y9ceye5reyeref5ax Right Eye - Refractive Measure 5 - Axis
y9ceye5reyesphavg Right Eye - Average Spherical
y9ceye5reyecylavg Right Eye - Average Cylinder
y9ceye5reyeaxavg Right Eye - Average Axis
y9ceye5reyeker1vrad Right Eye - Keratometry Measure 1 - R1 Vertical Radius
y9ceye5reyeker1d Right Eye - Keratometry Measure 1 - Diopter
y9ceye5reyeker1ax Right Eye - Keratometry Measure 1 - Axis
y9ceye5reyeker2hrad Right Eye - Keratometry Measure 2 - R2 Horizontal Radius
y9ceye5reyeker2d Right Eye - Keratometry Measure 2 - Diopter
y9ceye5reyeker2ax Right Eye - Keratometry Measure 2 - Axis
y9ceye5reyeker3ax Right Eye - Keratometry Measure 3 - Axis
y9ceye5reyeradavg Right Eye - Average Radius
y9ceye5reyedavg Right Eye - Average Diopter
y9ceye5leyeref1sph Left Eye - Refractive Measure 1 - Spherical
y9ceye5leyeref1cyl Left Eye - Refractive Measure 1 - Cylinder
y9ceye5leyeref1ax Left Eye - Refractive Measure 1 - Axis
y9ceye5leyeref2sph Left Eye - Refractive Measure 2 - Spherical
y9ceye5leyeref2cyl Left Eye - Refractive Measure 2 - Cylinder
y9ceye5leyeref2ax Left Eye - Refractive Measure 2 - Axis
y9ceye5leyeref3sph Left Eye - Refractive Measure 3 - Spherical
y9ceye5leyeref3cyl Left Eye - Refractive Measure 3 - Cylinder
y9ceye5leyeref3ax Left Eye - Refractive Measure 3 - Axis
y9ceye5leyeref4sph Left Eye - Refractive Measure 4 - Spherical
y9ceye5leyeref4cyl Left Eye - Refractive Measure 4 - Cylinder
y9ceye5leyeref4ax Left Eye - Refractive Measure 4 - Axis
y9ceye5leyeref5sph Left Eye - Refractive Measure 5 - Spherical
y9ceye5leyeref5cyl Left Eye - Refractive Measure 5 - Cylinder
y9ceye5leyeref5ax Left Eye - Refractive Measure 5 - Axis
y9ceye5leyesphavg Left Eye - Average Spherical
y9ceye5leyecylavg Left Eye - Average Cylinder
y9ceye5leyeaxavg Left Eye - Average Axis
y9ceye5leyeker1vrad Left Eye - Keratometry Measure 1 - R1 Vertical Radius
y9ceye5leyeker1d Left Eye - Keratometry Measure 1 - Diopter
y9ceye5leyeker1ax Left Eye - Keratometry Measure 1 - Axis
y9ceye5leyeker2hrad Left Eye - Keratometry Measure 2 - R2 Horizontal Radius
y9ceye5leyeker2d Left Eye - Keratometry Measure 2 - Diopter
y9ceye5leyeker2ax Left Eye - Keratometry Measure 2 - Axis
y9ceye5leyeker3ax Left Eye - Keratometry Measure 3 - Axis
y9ceye5leyeradavg Left Eye - Average Radius
y9ceye5leyedavg Left Eye - Average Diopter
y9ceye5pd Pupil Diameter
y9ceyedco DATA REMARKS

n = 666

Variable name: y9ceye1perf
Description: Visual Acuity
Value Label Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
0 No 0 0 0.00 0.00
1 Yes 623 623 93.54 93.54
2 Attempted but failed 0 623 0.00 93.54
3 Site unable to perform measurement 0 623 0.00 93.54
9997 Refused 1 624 0.15 93.69
NA 42 666 6.31 100.00



Variable name: y9ceye1distod1
Description: DIstance, Unaided - OD
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
-0.18 0.02 0.12 0.48 1.08 0.27 0.33



Variable name: y9ceye1distos1
Description: DIstance, Unaided - OS
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
-0.2 0.04 0.12 0.46 1.08 0.26 0.32



Variable name: y9ceye1distod2
Description: DIstance, Habitual/Aided (if applicable) - OD
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
-0.12 0.08 0.16 0.28 0.9 0.21 0.2



Variable name: y9ceye1distos2
Description: DIstance, Habitual/Aided (if applicable) - OS
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
-0.12 0.09 0.18 0.36 0.96 0.23 0.21



Variable name: y9ceye1co
Description: Remarks
Value Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
Child is wearing glasses but is unable to see anything without glasses at 4m. 1 1 0.15 0.15
Unaided VA done at 3M RE: +1.06 @ 3M LE: +1.04 @ 3M 1 2 0.15 0.30
Px has glasses but did not bring for the visit. 1 3 0.15 0.45
Child is unable to see anything without glasses at 4m. Child is seeing an ophthalmologist in SNEC, hence not referred. 1 4 0.15 0.60
Child is on atropine eye drops for many years. 1 5 0.15 0.75
Patient was referred to an optometrist. 1 6 0.15 0.90
Patient is wearing glasses but unable to see anything at 4m without glasses. 1 7 0.15 1.05
Patient has a pair of glasses but did not bring along for the visit 1 8 0.15 1.20
Child is wearing glasses but is unable to see anything at 4m without glasses 1 9 0.15 1.35
unable to perform unaided VA as child has very high prescription 1 10 0.15 1.50
Child is unable to see anything without glasses for RE at 4m. 1 11 0.15 1.65
Child has a pair of glasses but did not bring for the visit. 16 27 2.40 4.05
Child is unable to see anything without glasses at 4m. Child was last seen by an optometrist and changed her glasses on 03/2019, hence patient is not referred to an optometrist. 1 28 0.15 4.20
Child is unable to see anything without glasses at 4m. 2 30 0.30 4.50
Child has glasses but did not bring for visit 1 31 0.15 4.65
Child is unable to see anything without glasses for LE at 4m. 1 32 0.15 4.80
Child has a pair of glasses but did not bring for the study visit. Unable to see anything unaided for RE. 1 33 0.15 4.95
Child has a pair of glasses but did not bring one for the study. Child is diagnosed with amblyopia and strabismus and is on regular follow up with KKH ophthalmologist. 1 34 0.15 5.11
Child as a pair of glasses but did not bring for the visit. 1 35 0.15 5.26
Child is wearing glasses but unable to see anything at 4m (BE) 1 36 0.15 5.41
Child is on olopatadine 0.1% (1 Drop, 2 times a day) and normal lubrication drops. Previous episode of corneal scaring in K2 (RE), which causes decreased in visual acuity. Childi on yearly follow up with ophthalmologist. 1 37 0.15 5.56
Unaided VA done at 2m (OU). 1 38 0.15 5.71
Unaided VA performed at 2m. 4 42 0.60 6.31
Unaided VA performed at 2m. Both eyes unable to see anything unaided at 4m. 1 43 0.15 6.46
Child was diagnosed with lazy eye on LE. LE eye has stabilized as noted by an ophthalmologist and child has stopped review with an ophthalmologist 1 44 0.15 6.61
Child wears glasses but did not bring along for the visit. 1 45 0.15 6.76
Child have a pair of glasses but did not bring for the visit. 1 46 0.15 6.91
Child is unable to see anything at 4m without glasses 1 47 0.15 7.06
Child was diagnosed with amblyopia at 4 years old on LE. No longer on follow up with ophthalmologist. 1 48 0.15 7.21
Unaided VA at 2m; OD: +0.80, OS:+0.76 1 49 0.15 7.36
RE unaided performed at 2m, LE unaided performed at 4m. 1 50 0.15 7.51
Child had history of conjunctival trauma on LE due to rough play at 2 years old. Treated with eye drops and no longer on FU with an opthalmologist. Slight conjunctival bulging observed during year 9 visit. 1 51 0.15 7.66
Child has a pair of spectacles but did not bring for the visit. 1 52 0.15 7.81
Child has a pair of glasses but did not bring along for the visit. 1 53 0.15 7.96
Unaided VA performed at 2m for both eyes. 1 54 0.15 8.11
Child has a pair of glasses but did not bring for the visit 2 56 0.30 8.41
Unaided VA done at 2m, child has a pair of glasses but did not bring for visit. 1 57 0.15 8.56
Subject did not bring his glasses. 1 58 0.15 8.71
Child has glasses but did not bring for the visit. 1 59 0.15 8.86
Unaided VA performed at 2m. Child has a pair of glass but did not bring for the visit. 1 60 0.15 9.01
Child was diagnosed with lazy eye on RE at 3 years old and was wearing eye patch for 2-3 years. On yearly FU with ophthalmologist at KKH. 1 61 0.15 9.16
OD UNAIDED AT 2M. 1 62 0.15 9.31
Vision with glasses. 1 63 0.15 9.46
WITH GLASSES 1 64 0.15 9.61
AIDED BUT DID NOT BRING SPECTACLE 1 65 0.15 9.76
Subject did not bring her glasses. 1 66 0.15 9.91
Subject did not bring his glasses 1 67 0.15 10.06
Subject did not bring her glasses for the visit. 1 68 0.15 10.21
OD unaided VA done at 2 meters 1 69 0.15 10.36
Unaided VA at 2m. 1 70 0.15 10.51
Did not bring his glasses 1 71 0.15 10.66
Subject unable to read the chart unaided at 4m. 1 72 0.15 10.81
Unaided VA done at 2m, child is not able to see at 4m. 1 73 0.15 10.96
593 666 89.04 100.00


Variable name: y9ceye2drugalrg
Description: Drug Allergy Please list all known drug allergies. Indicate NIL if none.
Value Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
NIL 540 540 81.08 81.08
nil 4 544 0.60 81.68
na 2 546 0.30 81.98
120 666 18.02 100.00


Variable name: y9ceye2perf
Description: Eyedrops
Value Label Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
0 Not performed 2 2 0.30 0.30
1 Performed 541 543 81.23 81.53
2 Attempted but failed 2 545 0.30 81.83
3 Site unable to perform measurement 0 545 0.00 81.83
9997 Refused 79 624 11.86 93.69
NA 42 666 6.31 100.00



Variable name: yceye2co
Description: Remarks
Value Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
Mother refused as she is uncomfortable with child being put on eyedrops. 1 1 0.15 0.15
Mother refused as child is having badminton lesson in the afternoon 1 2 0.15 0.30
Mother refused the eye drops as child’s eye is prone to allergy 1 3 0.15 0.45
Mother refused eye drops as child is having a fever. 1 4 0.15 0.60
child struggled with eye drops and eventually refused 1 5 0.15 0.75
Mother refused eye drops 2 7 0.30 1.05
Child refused eye drops. 1 8 0.15 1.20
Child refused eye drops 2 10 0.30 1.50
Mother refused eye drops. 3 13 0.45 1.95
Only did LE for 2nd cyclo. Child refused eye drops after instilling on LE on 2nd cyclo round. 1 14 0.15 2.10
Cyclopentolate drops instilled on RE only for 3rd cycle. Child refused eye drops on LE for 3rd cycle. 1 15 0.15 2.25
Child refused eye drops on 2nd round of cycloplegia for LE. Third cycle not done. 1 16 0.15 2.40
Mother refused eye drops as child has class later. 1 17 0.15 2.55
Patient refused eyedrops after administering first drop of Alcaine on the right eye. 1 18 0.15 2.70
Child refused eye drops. Afraid. 1 19 0.15 2.85
Already dilated from SNEC 1 20 0.15 3.00
Child is on otho-k lenses, last lens wear on 24/6/2019 night. 1 21 0.15 3.15
Mother refused as child just had a recent eye test done at KKH with eye drops. 1 22 0.15 3.30
Father refused eye drops 1 23 0.15 3.45
Mother refuses eye drops. 1 24 0.15 3.60
Mother refused the eye drops. 1 25 0.15 3.75
Child is on daily dosage of Atropine eye drops. 1 26 0.15 3.90
Child is on daily dosage of Olopatadine HCL 0.1% eye drop. 1 27 0.15 4.05
Mom refused eye drops as the child has them on 12/12/2019 during her eye visit at KKH 1 28 0.15 4.20
Autorefraction down 1 29 0.15 4.35
Child on daily dosage of Atropine Eye Drops 1 30 0.15 4.50
636 666 95.50 100.00


Variable name: y9ceye3reye
Description: Right Eye
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
4.6 6 6 6.7 8.8 6.43 0.67



Variable name: y9ceye3leye
Description: Left Eye
Minimum 25th percentile Median 75th percentile Maximum Mean Standard deviation
5 6 6 6.8 8.7 6.45 0.68



Variable name: y9ceye3fulldil
Description: Achieved full dilation
Value Label Frequency Cumulative frequency Percentage (%) Cumulative percentage (%)
0 No 0 0 0.00 0.00
1 Yes 540 540 81.08 81.08
9998 Not applicable