Measurement of thickness of black layer of eye after refractive surgery

Not Applicable

• Conditions: Health Condition 1: H183- Changes of corneal membranes

• Registration Number: CTRI/2019/02/017595
• Lead Sponsor: Dr Lakhani Basitali Habibbhai

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Last Update Posted: 24 November 2021

Recruitment & Eligibility

• Status: ot Yet Recruiting
• Sex: Not specified
• Target Recruitment: 0

Inclusion Criteria

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 least12 months in the preoperative

examination.

3. 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.

Exclusion Criteria

1. Unstable refractive error for < 1year.

2. Insufficient corneal thickness for the proposed ablation depth.

3. Any other refractive error other than simple myopia and myopic astigmatism.

4. Abnormalities of the cornea (eg. Keratoconus or other corneal ectasia, thinning, edema,

interstitial keratitis, extensive vascularization, corneal opacity, epithelial dystrophy

etc).

5. Patient undergoing PRK for previous complication of LASIK or FEMTOLASIK.

6. Uncontrolled external disease of the eye (eg. Dry eye, atopy, and blepharitis).

7. Previous history of vitreoretinal surgery or any other intra ocular and extra ocular

surgery.

8. Age group less than 21 years and more than 40 years.

9. Monocular patient.

10. Patient on any drug treatment which produce dry eye (MAO inhibitors, alpha agonists,

beta blockers, thiazide diuretics, NSAIDS).

11. Uncontrolled connective tissue or autoimmune disease.

12. Pregnant or nursing woman.

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
1) Epithelial Thickness Changes Using AS-OCT <br/ ><br>2)To Assess UCVA AND BCVATimepoint: 1 year 6 months

Secondary Outcome Measures

Name	Time	Method
1)To assess TBUT(tear film break up time) <br/ ><br>2)To assess corneal staining score <br/ ><br>3)To assess Schirmers ScoreTimepoint: 1 year 6 months