Orthokeratology for presbyopia: Exploring refractive and corneal changes in hyperopic orthokeratology lens wear for correction of near vision in presbyopic patients
Not Applicable
Completed
- Conditions
- Refractive correction for presbyopiaEye - Diseases / disorders of the eye
- Registration Number
- ACTRN12610000731099
- Lead Sponsor
- Associate Professor Helen Swarbrick
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 20
Inclusion Criteria
Good ocular health, No contraindications to contact lens wear, Central corneal radius between 7.00mm & 8.40mm, Less than 1.50D of with-the-rule corneal astigmatism
Exclusion Criteria
Rigid contact lens wearers, active ocular pathology, Systemic disease or use of medications that may affect the eye or be exacerbated by wearing contact lenses, history of corneal surgery including refractive surgery, pregnancy
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Change in refractive status (Best vision sphere - Dioptres), using a Shin-Nippon NVision K5001 autorefractor and subjective routines used in standard optometric practice[Baseline, and AM (within 1 hour of waking) and PM (8-hours after AM) after 1, 7, 30, 60, and 90 nights of lens wear];Change in ocular aberrations will be measured using the Nidek OPD Scan II aberrometer corneal topographer[Baseline, and AM (within 1 hour of waking) and PM (8-hours after AM) after 1, 7, 30, 60, and 90 nights of lens wear];Change in corneal curvature will be measured using the Medmont E300 corneal topographer[Baseline, and AM (within 1 hour of waking) and PM (8-hours after AM) after 1, 7, 30, 60, and 90 nights of lens wear]
- Secondary Outcome Measures
Name Time Method Contact lens fitting and centration[Baseline, and at AM (within 1 hour of waking) after 1, 7, 30, 60, and 90 nights of lens wear]