Diabetes mellitus, refractive error
Conditions
Interventions
intervention group:1% tropicamide and 2.5% phenylephrine medication
control group: 0.5% tropicamide and 0.5% phenylephrine medication
control group:1% cyclopentolate
Sponsors
Tianjin Medical University Eye Hospital
Eligibility
Sex/Gender
All
Age
8 Years to 70 Years
Inclusion criteria
Inclusion criteria: Right eye refraction was used as the screening criterion, -0.50D>refraction>-6.00D, astigmatism<2.00D, refractive error<1.00D, 10mmHg<IOP<21 mmHg.
Exclusion criteria
Exclusion criteria: (1) Any previous internal eye surgery, such as cataract extraction or vitrectomy (2) The presence of other eye diseases that may affect the iris or pupil, such as eye trauma, iris redness, glaucoma, pseudoexfoliation syndrome, uveitis, etc. (3) Use of medication that affects the pupil, such as Hirschsprung's Bromide. (4) Pupil adhesion (5) People who are allergic to drugs affecting the function of autonomic nerves and pupil-dilating drugs taken before the examination. (6) Any condition that prevents accurate pupil size measurement, such as obvious corneal clouding, anterior chamber blood, amblyopia in both eyes, strabismus, refractive error, or poor co-operation of the patient. (7) Patients with systemic autonomic dysfunction such as tardive dyskinesia, upright hypotension, gastrointestinal tract dysfunction, etc. (8) Patients with a history of wearing contact lenses within one month.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pupil diameter;Amplitude of accommodation;Residual regulation; | — |
Secondary
| Measure | Time frame |
|---|---|
| Axial length;Central corneal thickness;Lens thickness;White to White;Aqueous depth;Flat meridian/K1;Steep meridian/K2;Patient discomfort level; | — |
Countries
China
Contacts
Public ContactWei Ruihua
Tianjin Medical University Eye Hospital
Outcome results
None listed