Cataract
Conditions
Interventions
Experimental Group:4% preservative-free obucaine hydrochloride eye drops were applied to the operated eye every 5 minutes before the operation for a total of 3 times of surface anesthesia
Sponsors
The Fourth Affiliated Hospital of China Medical University
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. Age >18 years old; 2. Best corrected visual acuity <0.5; 3. Lens opacity; 4. Senile cataract patients with nuclear opacity grade II-III; 5. Meet the surgical indications for phacoemulsification; 6. Be able and willing to participate in the relevant questionnaires and examinations of the trial, and sign informed consent.
Exclusion criteria
Exclusion criteria: 1. Patients with complicated cataract combined with other eye diseases were excluded; 2. Patients with systemic infection and rheumatic diseases were excluded; 3. Patients with active ocular infection such as dacryocystitis, conjunctivitis and keratitis were excluded; 4. Patients with previous allergy to general anesthesia or topical anesthetics were excluded. 5. Patients with corneal endothelial cell count less than 1000 were excluded. 6. Patients with glaucoma and pterygium were excluded. 7. Pregnant women drink lactating women, or women who became pregnant during the study period.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual virtual scale score; | — |
Secondary
| Measure | Time frame |
|---|---|
| Numerical rating scale score;Verbal description rating Scale score;Results of the Wong-Baker facial Expression pain assessment questionnaire;Visual acuity;Intraocular pressure; | — |
Countries
China
Contacts
Public ContactJiangyue Zhao
The Fourth Affiliated Hospital of China Medical University
Outcome results
None listed