Outcomes of blended vision created by laser using special software in patients having near vision difficulty

Not Applicable

• Conditions: Health Condition 1: null- healthy individuals in presbyopic age group

• Registration Number: CTRI/2014/09/005011
• Lead Sponsor: Research Foundation Nethradhama Eye Hospital

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Open to Recruitment
• Sex: Not specified
• Target Recruitment: 50

Inclusion Criteria

1.Subjects medically suitable for LASIK,

2. Presbyopic with corrected distant visual acuity(CDVA) no worse than 20/25 in either eye

3. Tolerance of at least -0.75 D anisometropia

4. Myopic patients with spherical equivalent (SE) refraction -8.50 D in both eyes

5. Hyperopic patients with SE upto +5.75 D in both eyes

6. Willing to accept a slight difference in vision between both eyes 8. Willing to use prescription corrective lenses to enhance vision to do precision tasks(reading small prints, needlework)

7. Soft contact lens discontinued for minimum 1 week and Rigid Gas Permeable contact lens discontinued for minimum 3 week

8.Ability to understand and willingness to sign informed consent and participate in follow up visits

Exclusion Criteria

1.Eyes with dense amblyopia with BSCVA < 6/12

2.Evidence of ocular diseases like severe meibomian gland diseases, herpetic keratitis, uvietis, glaucoma.

3.Visually significant cataract, retinal diseases like retinal dystrophies or diabetic retinopathy.

4.Corneal pathologies like corneal dystrophies , keratoconus, H/o corneal trauma or surgery within flap zone

5.Dry eye status-Schirmer’s I value less than 10 mm

6.Long term ocular medication like ß blockers.

7. Patients on systemic medication likely to affect wound healing like corticosteroids or antimetabolites.

8.H/o immunocompromised state or pregnancy or nursing mothers .

9.Patients with unrealistic expectations.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
improvement in uncorrected distance, intermediate and near visionTimepoint: day 1, day 15,3 months, and 6 months

Secondary Outcome Measures

Name	Time	Method
aberrations, topography, contrast sensitivityTimepoint: day 15, 3 months, 6 months