The effect of orthokeratology night time contact lenses for correcting presbyopia

Evaluating the effect of hyperopic orthokeratology contact lenses on near vision, refraction, topography and corneal thickness for correcting the presbyopia using monovision technique in non dominant eye

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20200228046640N1

Enrollment

Registered

2020-04-27

Start date

2019-04-13

Completion date

Unknown

Last updated

2020-05-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Presbyopia. Presbyopia

Interventions

Intervention 1: Intervention group :non-dominant eye .This is a "contralateral eye study" that non-dominant eye is fitted with hyperopic orthokeratology Boston xo contact lenses. This study included

Eligibility

Sex/Gender

All

Age

43 Years to 50 Years

Inclusion criteria

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

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

Design outcomes

Primary

Measure	Time frame
Near 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

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

Countries

Iran (Islamic Republic of)

Contacts

Public ContactHadi ostadi moghadam

Mashhad University of Medical Sciences

ostadih@mums.ac.ir+98 51 3884 6710

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026