Subluxation of Lens
Conditions
Brief summary
To compare the accuracy of four lens diameter measurement methods and to study the influencing factors of intraocular lens deviation after operation
Interventions
PROCEDUREPhacoemulsification and intraocular lens implantation for cataract
Phacoemulsification and intraocular lens implantation for cataract
Sponsors
Second Affiliated Hospital, School of Medicine, Zhejiang University
Study design
Observational model
ECOLOGIC_OR_COMMUNITY
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
20 Years to 88 Years
Healthy volunteers
No
Inclusion criteria
(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
Exclusion criteria
(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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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 |
| The eccentric distance of the intraocular lens | 1 week 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 | 1 week postoperation | The angle between the plane of the lens and the plane of the pupil is the inclination of the lens |
Countries
China
Outcome results
None listed