Cataract, High Myopia
Conditions
Keywords
Visual performance, Trifocal IOL, High myopic cataract
Brief summary
This is a prospective, multi-center, randomized comparative study. The purpose of the study is to evaluate and compare the postoperative visual outcomes and quality of vision of two diffractive trifocal intraocular lenses (IOLs) in patients with high myopic cataracts.
Detailed description
Binocular implantation of two types of trifocal IOLs was performed in patients with high myopic cataracts. Postoperative uncorrected distance (UNVA), intermediate (UIVA), near (UNVA), and best-corrected distance visual acuity (BCVA) were measured. Defocus curve, high-order aberrations, modulation transfer function curve, Strehl ratio and reading ability were compared between the two groups. The functional vision and incidence of photic phenomena were surveyed using questionnaires.
Interventions
Binocular implantation of two different trifocal intraocular lens in high myopic cataracts
Sponsors
Eye & ENT Hospital of Fudan University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* required binocular cataract extraction * age \> 21 years * length of optic axis \> 26 mm
Exclusion criteria
* irregular corneal astigmatism \> 0.3 um; * amblyopia; previous ocular surgery; * ocular pathologies such as diabetic retinopathy, macular degeneration, glaucoma with field defects; * requirements for further ocular surgery (other than Nd:YAG capsulotomy) or retinal laser treatments during the study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| best corrected distance visual acuity (BCVA) | one year | corrected visual acuity at 5 m |
| uncorrected distance visual acuity (UDVA) | one year | uncorrected visual acuity at 5 m |
| uncorrected near visual acuity (UNVA) | one year | uncorrected visual acuity at 40 cm |
| uncorrected intermediate visual acuity (UIVA) | one year | uncorrected visual acuity at 60 cm |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Strehl Ratio | three months | The derivative of point spread function (PSF) |
| objective visual quality | three months | MTF curves |
| HOAs | three months | high order aberrations such as coma |
Countries
China
Outcome results
None listed