The Best Way to Improve the Near Visual Acuity After ZXR00 IOL Implantation
Study Details
Study Description
Brief Summary
The Best Way to Improve the Near Visual Acuity After ZXR00 IOL Implantation
Condition or Disease | Intervention/Treatment | Phase |
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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.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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ZXR00+ZXR00 emmetropia group The bilateral implantation of ZXR00 IOLs,and emmetropia was considered as the target refraction for both eyes. |
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ZXR00+ZXR00 micromonovision group The bilateral implantation of ZXR00 IOLs,and the ZXR00 IOLs power calculations were performed using a micro-monovision approach aiming for minimal residual myopia (≈ -0.50 D) in the nondominant eye and emmetropia in the dominant eye. |
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ZXR00ZMB00 group The blended implantation of bifocal IOLs (ZMB00) and ZXR IOLs. |
Outcome Measures
Primary Outcome Measures
- 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.
Eligibility Criteria
Criteria
Inclusion Criteria:
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Age of 18-80 years
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Cataract surgery is planned
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The operation was successful without any complications
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Implanted with ZXR00 IOLS or ZMB00 IOLs
Exclusion Criteria:
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The history of retinopathy or retinal surgery
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Irregular corneal astigmatism
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Regular corneal astigmatism of 1.00 diopter (D) or more
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Iris abnormalities
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Macular degeneration
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Neuro-ophthalmic disease
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The history of ocular inflammation
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Yune Zhao
Investigators
- Study Director: Yune Zhao, Ophthalmology and Optometry Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- ZXR00-zyy