Refractive Surgery Clinical Trial
Official title:
Comparison of the Outcome of Topography Modified Refraction Correction to Standard Clinical Refraction Correction in Myopic Astigmatic Topography-guided LASIK
Verified date | January 2020 |
Source | Cairo University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Background and Rationale:
LASIK has been among the highest satisfaction rates of surgical procedures, ranging from
82%-98%. Different ablation profiles have been developed over the years. The purpose of this
study is to validate this novel measurement by comparing the visual outcomes when the TMR is
used in myopic astigmatic LASIK to using the standard manifest refraction or the Topolyzer
measurements alone.
Objectives :
To evaluate the safety, efficacy and predictability of topography-guided myopic LASIK with
three different refraction treatment strategies.
Status | Completed |
Enrollment | 30 |
Est. completion date | January 20, 2020 |
Est. primary completion date | November 15, 2019 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Stable refractive error: Myopic astigmatism = -1.5 D - Valid Topolyzer maps (at least four out of eight right maps with green analyzed area and the registration box is green). Exclusion Criteria: 1. Estimated postoperative residual stromal bed thickness of less than 300µm. 2. Glaucomatous patients. 3. Patients with keratoconus. 4. Patients with pervious refractive surgery. 5. History of previous ocular trauma or surgery. 6. History of recent herpetic ulcer or viral keratitis. 7. Basement membrane disease, history of recurrent corneal erosions. 8. Sicca syndrome, dry eye. |
Country | Name | City | State |
---|---|---|---|
Egypt | Kasr Alainy | Cairo |
Lead Sponsor | Collaborator |
---|---|
Cairo University |
Egypt,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | post operative residual astigmatism | measuring the post operative residual astigmatism and comparison between the 3 group to reach to the most accurate protocol. | 3 months | |
Secondary | measurement of the postoperative unaided visual acuity | measurement of the postoperative unaided visual acuity and comparison between the 3 group to reach to the most accurate protocol. | 3 months |
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