Comparison of the Visual Quality of Traditional Ultrasound Biometrics and Lenstar on the Cataract After Pars Plana Vitrectomy

• Conditions: Diabetic Retinopathy Patients After Vitrectomy
• Interventions: Device: Lenstar; Device: Traditional ultrasound biometrics

• Registration Number: NCT03485586
• Lead Sponsor: Bojie Hu

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.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-03-24
• Study First Submitted QC: 2018-03-30
• Status Verified: 2018-04
• Last Update Submitted: 2018-04-01
• Study First Posted: 2018-04-02
• Study Start: 2018-04-03
• Last Update Posted: 2018-04-03
• Primary Completion: 2018-07-31
• Study Completion: 2018-10-31

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 60

Inclusion Criteria

1. Patients with cataract after vitrectomy because of diabetic retinopathy.
2. Patients with good fixation in order to cooperate with various examination.

Exclusion Criteria

1. Myopia of >6 diopters
2. Ocular trauma and other eye disease accepted vitrectomy,such as branch retinal vein occlusion(BRVO),central retinal vein occlusion(CRVO).
3. Vision acuity <0.1
4. Silicone oil eye

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Group:Lenstar	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.
Group:Traditional ultrasonic biological	Traditional ultrasound biometrics	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.

Primary Outcome Measures

Name	Time	Method
the visual quality of the eye after surgery	three month	the visual quality of the eye after surgery through optical path difference scan（OPD Scan）

Trial Locations

Locations (1)

Tianjin Medical University Eye Hospital; 🇨🇳 Tianjin, Tianjin, China