The effect of orthokeratology night time contact lenses for correcting presbyopia

Not Applicable

• Conditions: Presbyopia.; Presbyopia; H52.4

• Registration Number: IRCT20200228046640N1
• Lead Sponsor: Mashhad University of Medical Sciences

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Last Update Posted: 18 May 2020

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 11

Inclusion Criteria

Emeteropic persons age range of 43-50 years
Unaided distance visual acuity in dominant eye at least 6/9
Blurred near vision

Exclusion Criteria

The amount of with the rule astigmatism more than 1.5 diopter
Presence of against the rule astigmatisem
eye disease
systemic disease
ocular surgery history
History of wearing RGP or hard contact lenses

Study & Design

• Study Type: interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
ear visual acuity. Timepoint: Before intervention, one day and 7 days after intervention. Method of measurement: Visual acuity chart.;Central axial curvature. Timepoint: Before intervention, one day and 7 days after intervention. Method of measurement: Topography.;Peripheral axial curvature. Timepoint: Before intervention, one day and 7 days after intervention. Method of measurement: Topography.

Secondary Outcome Measures

Name	Time	Method
Refraction. Timepoint: Before intervention, one day and 7 days after intervention. Method of measurement: Auto reFractometer.