Cataract, Near Vision
Conditions
Brief summary
The Best Way to Improve the Near Visual Acuity After ZXR00 IOL Implantation
Detailed description
ZXR00 intraocular lens is a new type of IOL that can achieve good continuous visual acuity. Its characteristic is to improve the distance and intermedia visual acuity and maintain good visual quality while sacrificing the near visual acuity. Previous studies report that there are mainly two ways to improve the near visual acuity of ZXR00：1.Bilateral implantation of ZXR00 with micromonovision. 2. Combined Implantation of ZXR00 and multifocal IOLs.This study aim to explore which is the best way to improve the near visual acuity after ZXR00 IOL implantation.
Interventions
None listed
Sponsors
Yune Zhao
Study design
Observational model
CASE_ONLY
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Age of 18-80 years * Cataract surgery is planned * The operation was successful without any complications * Implanted with ZXR00 IOLS or ZMB00 IOLs
Exclusion criteria
* The history of retinopathy or retinal surgery * Irregular corneal astigmatism * Regular corneal astigmatism of 1.00 diopter (D) or more * Iris abnormalities * Macular degeneration * Neuro-ophthalmic disease * The history of ocular inflammation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Uncorrected Visual Acuities | 2022.12.31 | Uncorrected monocular and binocular visual acuities (logarithm of the minimum angle of resolution) at distance (5m), intermediate(66 cm), and near (40 cm). |
| Corrected Visual Acuities | 2022.12.31 | Corrected monocular and binocular visual acuities (logarithm of the minimum angle of resolution) at distance (5m), intermediate(66 cm), and near (40 cm). |
| Defocus Curve | 2022.12.31 | Corrected monocular and binocular defocus curves were measured from +2.5 D to -4.0 D (in 0.5 D steps). |
| Patient satisfaction | 2022.12.31 | Patient satisfaction was rated on a scale of 1 to 5: 1 = very dissatisfied; 2 = dissatisfied; 3 = neutral; 4 = satisfied; and 5 = very satisfied. |
| Subjective quality of vision | 2022.12.31 | Subjective quality of vision was evaluated using the 14-item Visual Function Questionnaire (VFQ-14).Each item was scaled according to the degree of difficulty of different activities: 4 points (no difficulty), 3 points (a little difficulty), 2 points (a moderate amount of difficulty), 1 point (a great deal of difficulty), and 0 point (unable to do the activity).overall score is range 0-56.The higher the score, the worse subjective quality of vision. |
| Adverse visual symptoms | 2022.12.31 | Adverse visual symptoms including blurred vision, glare, starbursts, haloes, hazy vision, distortion, focusing diffculties, multiple images, and depth perception diffculty, was evaluated using the Quality of Vision test. This test includes 30 items, with a score between 0 and 3 (overall score range 0-90).The higher the score, the more postoperative adverse visual symptoms. |
| Stereopsis | 2022.12.31 | Stereopsis was evaluated using OCULUS Binoptometer. |
Contacts
Primary ContactYune Zhao
Backup ContactJiayan Fang
Outcome results
None listed