Orthokeratology, often called Ortho-K for short, is a form of safe, non-surgical vision correction. Ortho-K contact lenses are worn while the patient is sleeping to improve vision by reshaping the cornea. This process allows the freedom to see clearly without daytime vision correction. View our upcoming studies.
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This research study is looking to recruit people who meet the following criteria:
- Adults aged 18 years or older who can attain good vision in each eye
- History of wearing soft contact lenses for at least 6 months
- Wore or attempted to wear soft contact lenses for at least 3 weeks, and at least 4 times a week before the study
- Are unable to comfortably wear your contact lenses for as long as you want
- History of contact lens dryness/intolerance in the 6 months preceding the study
- Evidence of obstruction of the glands in the eyelids which produce oils to maintain the tear film
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This study might be a good fit if you meet the following criteria:
- Aged between 18-40
- Experienced contact lens wearer or someone new to wearing contact lenses
- Short sighted (myopic) between -0.50 to -15.50 diopters or long sighted (hyperopic) between +0.50 to +1.75 diopters without astigmatism or with astigmatism less than 1.75 diopters
- Willing to wear contact lenses for a minimum of 6 hours per day at least 5 days per week for 3 months
- Attend 5 study visits at the School of Optometry and Vision science - visit 1, visit 2 (4 - 6 days after visit 1) and 3 monthly visits thereafter
- Willing to not use any rewetting eye drops for the duration of the study
- Do not have any active eye infection or allergies
- Are not pregnant, do not have any systemic disease such as diabetes or neurological disorder such as epilepsy
- Do not use medications that may affect the eye such as antihistamines
- Not have undergone refractive surgery
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This study might be a good fit if you meet the following criteria:
- experienced contact lens wearer
- over 18 years of age.