An observational study in Pupil Diameter, sponsored by He Eye Hospital. Completed at 1 site in China. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2022-02-01.
Sponsored by He Eye Hospital · Observational
The aim of this study is to observe the influence of pupil size upon visual outcome in patients with Visian Implantable Collamer Lens(ICL) and toric-ICL implantation.
The aim of this study is to observe the influence of pupil size upon the quality of vision outcome in patients with Visian Implantable Collamer Lens(ICL) and toric-ICL implantation. Pre-operation and 3-month post-operation pupil size, visual acuity, quality of vision will be evaluated in patient that had ICL surgery.
He Eye Hospital is the lead sponsor of 31 studies on the registry; 15 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Randomly choosen patients from the hospital records who had ICL surgery at He Eye Hospital, Shenyang, China during September 2019 to September 2020. They must have signed informed consent for their records to be used for education and research purposes before undergoing ICL surgery for myopic correction.
Exclusion Criteria:
Subjective Quality of vision
Change in QoV questionnaire score after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: Baseline (before surgery) and 3 month after surgery
Pupil diameter pre-operation and post-operation
Change in Pupil diameter after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: Baseline (before surgery) and 3 month after surgery
Wave front aberrometry
Change in Wave front aberrometry after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: baseline and 3 month after surgery
Point Spread Function (PSF)
Change in Point Spread Function (PSF) after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: baseline and 3 month after surgery
Strehl ratio
Change in Pupil diameter after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: Baseline and 3 month after surgery
Modulation transfer function (MTF)
Change in Modulation transfer function after ICL surgery at 3-month testing will be compare with baseline measurements
Time frame: Baseline and 3 month after surgery
This study is completed, as verified in Jul 2021. You cannot join it, but the record below documents what was studied.
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He Eye Hospital