Effect of uncorrected astigmatism on visio

Not Applicable

Completed

• Conditions: Myopia; Eye Diseases

• Registration Number: ISRCTN28719734
• Lead Sponsor: CooperVision International Limited

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2022-08-31
• Study Completion: 2023-03-01
• Last Update Posted: 19 February 2024

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

1. Age 8 to 16 years
2. Current soft contact lens wearers
3. Spectacle refraction: -0.75 to -6.00 D spherical equivalent, with cylinder of -0.50 DC to -1.75 DC
4. Best corrected visual acuity of at least 20/25 in each eye
5. Have normal eyes with the exception of the need for visual correction
6. Parent/guardian and participant have read and understood the Participant Information Sheet
7. Parent/guardian and participant have read, signed and dated the Informed Consent and Assent (when applicable)

Exclusion Criteria

To be eligible as a participant, each candidate shall be free of any ocular or medical condition that may affect the results of this study.

The following are specific criteria that exclude a candidate from enrolment in this study:
1. Ocular anterior segment infection, inflammation, abnormality, or active disease that would contraindicate contact lens wear
2. Newly prescribed (within the past 30 days) use of some systemic medications (such as antihistamines, decongestants, diuretics, muscle relaxants, tranquilizers, stimulants, anti-depressants, anti-psychotics, oral contraceptives) or new prescription eyedrops which is not rewetting/lubricating eyedrops for which contact lens wear could be contraindicated as determined by the investigator
3. Monocular participants (only one eye with functional vision) or participants fit with only one lens
4. Subjects with slit lamp findings greater than grade 2 or higher (e.g. oedema, infiltrates, corneal neovascularization, corneal staining, tarsal abnormalities, conjunctival, anterior segment inflammation) as per ISO 11980, any previous history or signs of a contact lens related corneal inflammatory event (past corneal ulcers), or any other ocular abnormality that may contraindicate contact lens wear at the enrolment visit
5. History of herpetic keratitis, ocular surgery or irregular cornea
6. Enrolment of the family members of the investigator, family members of the investigator’s staff, or individuals living in the households of these individuals

Study & Design

• Study Type: Interventional
• Study Design: Not specified