Study of Subluxation Lens Biometrics and Postoperative Intraocular Lens Stability
- Conditions
- Subluxation of Lens
- Registration Number
- NCT04685122
- Lead Sponsor
- Second Affiliated Hospital, School of Medicine, Zhejiang University
- Brief Summary
To compare the accuracy of four lens diameter measurement methods and to study the influencing factors of intraocular lens deviation after operation
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 60
(1) Subluxation of the lens is less than 180 degrees; (2) Part of the edge of the lens can be seen in the pupil area after the pupil is dilated
(1) Total dislocation of the lens to the vitreous cavity (2) Patients with small eyeballs and small eyelid fissures (3) Patients younger than 18 years old (4) Congenital cataracts in both eyes (5) Corneal dystrophy or endothelial cell insufficiency (6) Chronic uvea Inflammation (7) Progressive fundus disease (8) Fragile capsular bag (9) Retinitis pigmentosa or pseudocapsular exfoliation syndrome
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method The eccentric distance of the intraocular lens 3 month postoperation The distance between the center of the lens plane and the center of the pupil plane is the eccentric distance of the lens.
The tilt angle of the intraocular lens 3 month postoperation The angle between the plane of the lens and the plane of the pupil is the inclination of the lens
Lens diameter through study completion, an average of 1 year Measured by related instruments before surgery and calculated by the circumference of the tension ring in the surgical video screenshot
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Second Affiliated Hospital, Zhejiang University School of Medicine
🇨🇳Hangzhou, Zhejiang, China