Journal of Ophthalmology / 2019 / Article / Tab 2

Clinical Study

Evaluation of Disk Halo Size after Implantation of a Collamer Lens with a Central Hole (ICL V4c)

Table 2

Time course of halo radius and pupillary responses to light after implantation of ICL V4c.

VariablesPreoperationPostoperative 1 weekPostoperative 1 monthPostoperative 3 months

Halo radius (arc minutes)187.3886.90148.3348.18122.6240.55104.7636.11<0.001
Initial pupil diameter (mm)5.060.694.960.634.890.634.840.570.005
Amplitude of contraction (mm)1.870.311.590.301.580.311.580.29<0.001
Latency of contraction (ms)241.3666.42232.2655.99230.5572.94246.6254.940.603
Duration of contraction (ms)609.1984.97635.8683.62654.00118.25623.0094.460.302
Velocity of contraction (mm/s)6.240.885.070.884.951.034.960.90<0.001
Latency of dilation (ms)850.5558.26868.1271.79870.6468.57867.4867.230.130
Duration of dilation (ms)1563.57130.411606.6479.941562.2999.881578.67109.890.139
Velocity of dilation (mm/s)2.510.642.<0.001
Maximum pupil diameter (mm)5.410.695.320.605.300.565.220.540.021
Minimum pupil diameter (mm)3.140.443.310.473.250.423.200.360.001
Average pupil diameter (mm)4.480.624.520.574.490.514.420.460.249

represents the values of comparison among preoperative values and postoperative 1-week, 1-month, and 3-month values.

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.