Comparison Of Visual Outcomes Between Customised Laser In-Situ Keratomileusis And Customised Photorefractive Keratectomy
- Conditions
- Health Condition 1: H52- Disorders of refraction and accommodation
- Registration Number
- CTRI/2019/12/022228
- Lead Sponsor
- Dr Linsa Kunjumon
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Yet Recruiting
- Sex
- Not specified
- Target Recruitment
- 0
1) Candidate should have a myopia between (-1.5 to 10 D) and astigmatism up to (-4D).
2) With documented stability of refraction, as demonstrated by a change of less than or equal to 1 D of myopia and (-0.5 D) of astigmatism at least 12 months prior to the preoperative examination
3) Patients undergoing customized LASIK (Zyoptix Bausch & Lomb Teneo 317 laser) surgery
4) Candidates with corneal thickness of 500μ and less, Minimal corneal thickness of 470μ and above on Orbscan and calculated residual stromal bed of minimum 300μ for PRK.
1. Patients undergoing Femto laser-based LASIK surgery.
2. Abnormalities of the cornea (e.g. Keratoconus or other corneal ectasia, thinning, edema, interstitial keratitis, extensive vascularization).
3. Uncontrolled external disease of the eye (e.g. Dry eye, atopy, blepharitis).
4. Previous history of vitreoretinal surgery or any other intra ocular and extra ocular surgery.
5. One eyed patient.
6. Uncontrolled connective tissue or autoimmune disease.
7. Orbital, lid or ocular anatomy that precludes function of the microkeratome.
8. Pregnant or nursing woman.
Study & Design
- Study Type
- Observational
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method 1.Uncorrected visual acuity (UCVA) <br/ ><br>2.Best corrected visual acuity (BCVA) <br/ ><br>Timepoint: Preoperatively later 1 month and 3 months <br/ ><br>
- Secondary Outcome Measures
Name Time Method 1.Contrast sensitivity <br/ ><br>2.Higher order aberrations (HOAs) <br/ ><br>Timepoint: Preoperatively later 1 month and 3 months