Comparison of the Visual Quality of Traditional Ultrasound Biometrics and Lenstar on the Cataract After Pars Plana Vitrectomy
PPV
1 other identifier
observational
60
1 country
1
Brief Summary
Comparison of the visual quality of traditional ultrasound biometrics and lenstar on the cataract patients with diabetic retinopathy after vitrectomy in the 3 months later.To evaluate the clinical value of lenstar in post-vitrectomy patients.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for all trials
Started Apr 2018
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 24, 2018
CompletedFirst Posted
Study publicly available on registry
April 2, 2018
CompletedStudy Start
First participant enrolled
April 3, 2018
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 31, 2018
CompletedStudy Completion
Last participant's last visit for all outcomes
October 31, 2018
CompletedApril 3, 2018
April 1, 2018
4 months
March 24, 2018
April 1, 2018
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
the visual quality of the eye after surgery
the visual quality of the eye after surgery through optical path difference scan（OPD Scan）
one month
the visual quality of the eye after surgery
the visual quality of the eye after surgery through optical path difference scan（OPD Scan）
three month
Study Arms (2)
Group:Traditional ultrasonic biological
The measurement of axial length was performed in 60 eyes (30 eyes for each group) with senile cataract of vitrectomised eye of diabetic retinopathy using lenstar and traditional ultrasonic biological combined with cornea curvimeter.In this group,we use traditional ultrasonic biological combined with cornea curvimeter to measure the ocular parameter.
Group:Lenstar
The measurement of axial length was performed in 60 eyes (30 eyes for each group) with senile cataract of vitrectomised eye of diabetic retinopathy using lenstar and traditional ultrasonic biological combined with cornea curvimeter.In this group,we use lenstar to measure the ocular parameter.
Interventions
To evaluate the clinical feasibility of using a new optical coherence interferometry ( lenstar ),comparing with traditional ultrasonic biometry and keratometry in the accuracy and characteristics for intraocular lens calculation of cataract after PPV
To evaluate the clinical feasibility of using a new optical coherence interferometry ( lenstar ),comparing with traditional ultrasonic biometry and keratometry in the accuracy and characteristics for intraocular lens calculation of cataract after PPV
Eligibility Criteria
Patients with cataract after vitrectomy because of diabetic retinopathy.
You may qualify if:
- Patients with cataract after vitrectomy because of diabetic retinopathy.
- Patients with good fixation in order to cooperate with various examination.
You may not qualify if:
- Myopia of \>6 diopters
- Ocular trauma and other eye disease accepted vitrectomy,such as branch retinal vein occlusion(BRVO),central retinal vein occlusion(CRVO).
- Vision acuity \<0.1
- Silicone oil eye
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Bojie Hulead
Study Sites (1)
Tianjin Medical University Eye Hospital
Tianjin, Tianjin Municipality, China
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- STUDY DIRECTOR
bojie Hu, docter
Tianjin Medical University Eye Hospital
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- CASE CONTROL
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR INVESTIGATOR
- PI Title
- Bojie Hu, Head of Ophthalmology department, Principal Investigator, Associate Senior Physician, Tianjin Medical University Eye Hospita
Study Record Dates
First Submitted
March 24, 2018
First Posted
April 2, 2018
Study Start
April 3, 2018
Primary Completion
July 31, 2018
Study Completion
October 31, 2018
Last Updated
April 3, 2018
Record last verified: 2018-04