An evaluation of contrast sensitivity function with optical filters, myopia control spectacles and contact lenses in myopes

Exclusion Criteria14

• • Have strabismus and/or amblyopia.
• Astigmatism more than- 2.00 D in either eye.
• Any ocular and central nervous system anomalies.
• Any pre-existing ocular irritation, injury or condition (including infection or disease) of the cornea, conjunctiva or eyelids that would preclude contact lens fitting and safe wearing of contact lenses.
• Any systemic disease that adversely affects ocular health e.g. diabetes, Graves disease, and auto immune diseases such as ankylosing spondylitis, multiple sclerosis, Sjögrens syndrome and systemic lupus erythematosus. Conditions such as systemic hypertension and arthritis do not automatically exclude prospective participants.
• Use of or a need for concurrent category S3 and above ocular medication at enrolment and/or during the clinical trial.
• Use of or a need for any systemic medication or topical medications which may alter normal ocular findings / are known to affect a participant’s ocular health / physiology or contact lens performance either in an adverse or beneficial manner at enrolment and/or during the clinical trial.
• NB: Systemic antihistamines are allowed on an “as needed basis”, provided they are not used prophylactically during the trial and at least 24 hours before the clinical trial product is used.
• Eye surgery within 12 weeks prior to enrolment for this trial.
• Previous corneal refractive surgery.
• Known allergy or intolerance to ingredients in any of the clinical trial products.
• Currently enrolled in another clinical trial.
• Participation in a clinical trial within the previous 2 weeks for dispensing studies and 48 hours between in-house studies.
• Pregnancy*.