The Effect of Wearing Orthokeratology on Objective Visual Quality
Study Details
Study Description
Brief Summary
The visual quality indexes of these patients before and after Orthokeratology treatment were compared: 4 mm higher strehl ratio (SR) , 4 mm higher order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Comas, Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai)
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
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Detailed Description
USING OPD-SCAN III instrument method: Drag The joystick to focus on the screen prompt, and the device automatically starts to measure the aberration when the yellow focus is shown; Simk will change from black to rose red when the aberration is measured to start measuring the corneal topography, prompting the patient to blink the tear film evenly and press the button on the joystick when the focus is completed.The following data were obtained and analyzed: 4 mm high order STREHL rate (SR) , 4 mm high order corneal aberration (Hoa ) , Spherical Aberration (SA) , Coma Aberration (Coma) , Trefoil Aberration (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai)
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Before wearing the Orthokeratology OPD-Scan was performed and the following data were recorded: 4 mm high order strehl ratio (SR) , 4 mm high order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Coma Aberrations (Coma) , Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai) |
|
| Wear Orthokeratology for a week OPD-Scan was performed and the following data were recorded: 4 mm high order strehl ratio (SR) , 4 mm high order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Coma Aberrations (Coma) , Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai) |
|
| Wear Orthokeratology for a month OPD-Scan was performed and the following data were recorded: 4 mm high order strehl ratio (SR) , 4 mm high order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Coma Aberrations (Coma) , Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai) |
|
| Wear Orthokeratology for three months OPD-Scan was performed and the following data were recorded: 4 mm high order strehl ratio (SR) , 4 mm high order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Coma Aberrations (Coma) , Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai) |
|
| Wear Orthokeratology for six months OPD-Scan was performed and the following data were recorded: 4 mm high order strehl ratio (SR) , 4 mm high order corneal aberrations (Hoa ) , Spherical Aberrations (SA) , Coma Aberrations (Coma) , Trefoil Aberrations (RMS) , corneal aspheric index (Q, e) , corneal surface regularity index (SRI) , corneal surface asymmetry index (Sai) |
Outcome Measures
Primary Outcome Measures
- 4 mm high-order strehl ratio [6 months]
Objective visual quality 1
- 4 mm high-order corneal aberrations (Hoa) in Microns [6 months]
Objective visual quality 2
- Spherical Aberrations (SA) in Microns [6 months]
Objective visual quality 3
- Coma Aberrations (COMA) in Microns [6 months]
Objective visual quality 4
- Trefoil Aberrations in Microns [6 months]
Objective visual quality 5
- corneal aspheric index(Q) [6 months]
Objective visual quality 6
- corneal aspheric index(e) [6 months]
Objective visual quality 7
- corneal surface regularity index (SRI) [6 months]
Objective visual quality 8
- corneal surface asymmetry index (Sai) [6 months]
Objective visual quality 9
Eligibility Criteria
Criteria
Inclusion Criteria:
- The subject understands the purpose of this clinical trial and is willing, able and committed to return to the center for all clinical trial visits and to complete all research related procedures
Exclusion Criteria:
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- Associated with corneal abnormalities, such as active Keratitis (corneal infection) , corneal dystrophy, Keratoconus, corneal Leukoplakia, corneal hypoesthesia, or previous corneal surgery, or a history of corneal trauma;
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2, there are other eye diseases, such as Dacryocystitis, dry eye disease, conjunctivitis, blepharitis, Uveitis, and other inflammation, Glaucoma, cataracts, fundus disease, eye tumors, ocular trauma, squint patients;
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- A history of allergy to contact lens or contact Lens Solution.
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- Test results indicate that subjects with contraindications or unsuitable for wearing Orthokeratology.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | First Affiliated Hospital of Jinan University | Guangdong | Guangzhou | China | 510632 |
Sponsors and Collaborators
- XiaoYong Liu
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
- Goldstone RN, Yildiz EH, Fan VC, Asbell PA. Changes in higher order wavefront aberrations after contact lens corneal refractive therapy and LASIK surgery. J Refract Surg. 2010 May;26(5):348-55. doi: 10.3928/1081597X-20100218-03. Epub 2010 May 19.
- Holden BA, Fricke TR, Wilson DA, Jong M, Naidoo KS, Sankaridurg P, Wong TY, Naduvilath TJ, Resnikoff S. Global Prevalence of Myopia and High Myopia and Temporal Trends from 2000 through 2050. Ophthalmology. 2016 May;123(5):1036-42. doi: 10.1016/j.ophtha.2016.01.006. Epub 2016 Feb 11. Review.
- Lian Y, Shen M, Huang S, Yuan Y, Wang Y, Zhu D, Jiang J, Mao X, Wang J, Lu F. Corneal reshaping and wavefront aberrations during overnight orthokeratology. Eye Contact Lens. 2014 May;40(3):161-8. doi: 10.1097/ICL.0000000000000031.
- Swarbrick HA. Orthokeratology review and update. Clin Exp Optom. 2006 May;89(3):124-43. Review.
- Yin Y, Zhao Y, Wu X, Jiang M, Xia X, Chen Y, Song W, Hu S, Zhou X, Young K, Wen D. One-year effect of wearing orthokeratology lenses on the visual quality of juvenile myopia: a retrospective study. PeerJ. 2019 May 30;7:e6998. doi: 10.7717/peerj.6998. eCollection 2019.
- 2021jnU