Cataract
Conditions
Interventions
trial group:Implanting depth-of-field elongated intraocular lens
control group:Implanting TECNIS?Symfony Extended Range of Vision IOL
Sponsors
Eye Hospital, WMU Zhejiang Eyehospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: (1) Age = 18 years old, age =81 years old, gender unlimited; (2) For patients with cataract in one or both eyes, who plan to undergo phacoemulsification and intraocular lens implantation and have the requirement of delens, if both eyes of the patient meet the admission criteria, the affected eye with poor corrected vision or better fundus is selected to be enrolled in this study; (3) Kappa Angle < 0.7mm (Kappa Angle: distance from pupil center to optic axis); (4) The Total high-order aberration (Total HOA) in the central corneal diameter of 4 mm was less than 0.3um; (5) 3.0mm= natural pupil diameter =5.5mm in dim; (6) Preoperative depth of anterior room =2.00 mm; (7) Postoperative predicted corneal astigmatism =1.0D; (8) The expected intraocular lens refraction was between +5.0D and +30.0D; (9) Patients who were able to complete 6-month follow-up; (10) Be able to understand the purpose of the trial, voluntarily participate in the clinical trial and sign the informed consent.
Exclusion criteria
Exclusion criteria: (1) Pregnant or lactating women, and those who plan to become pregnant within 6 months after the operation; (2) The best corrected distal visual acuity >20/40 (LogMAR visual acuity chart); (3) Preoperative corneal endothelial cell count 8 mmol/L), or a history of diabetes associated with eye diseases or conditions affecting postoperative vision; (19) Electrocardiogram or laboratory examination results indicate contraindications to surgery; (20) Unsupervised or unable to follow medical advice; (21) Other conditions that the investigator judged unsuitable for participation in the experiment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| At 6 months after surgery, optimal corrected distal vision and middle vision A under optimal corrected distal vision were obtained Percentage of patients with 20/40 visual acuity (80cm) and medium visual acuity B (60cm) (LogMAR visual acuity chart was used uniformly in each center);contrast sensitivity; | — |
Secondary
| Measure | Time frame |
|---|---|
| diopter;Defocus curve;Visual B (60cm) detachment rate;Visual Symptom Survey; | — |
Countries
China
Contacts
Public ContactAyong Yu
Eye Hospital, WMU Zhejiang Eyehospital
Outcome results
None listed