Clinical Evaluation of HPT Treated Rigid Contact Lenses Made From Roflufocon D

Inclusion criteria

• Willing and able to sign the informed consent form
• Aged ≥18 years old
• Experienced wearer of rigid gas permeable contact lenses
• Subject's habitual contact lenses must be made of Contamac's Optimum Extra (roflufocon D) material
• Subjects must have owned spectacles or contact lenses prior to enrolment for this trial
• Spherical power between -10.00 D and +10.00 D (at vertex distance 0 mm)
• Corneal astigmatism ≤2.00 D

Exclusion criteria

• Eye injury or surgery within 3 months immediately prior to enrolment for this trial

• Pre-existing ocular irritation that would preclude contact lens fitting
• Currently enrolled in an ophthalmic clinical trial
• Evidence of systemic or ocular abnormality, infection or disease which is likely to affect successful wear of contact lenses or use of the accessory solutions, as determined by the investigator
• Any use of medications for which contact lens wear could be contradicted, as determined by the investigator
• Current extended-wear users (sleep-in overnight)
• Current monovision lens wearers
• Current wearers of multifocal contact lenses
• Current wearers of toric contact lenses (front surface design)
• Current wearers of astigmatic contact lenses (posterior surface design)
• Has a reported "Strong" comfort or vision preference between each eye with their habitual RGP lenses
• Unacceptable fit of habitual lenses
• Pregnant women and nursing mothers
• Best-corrected visual acuity worse than 6/9 (LogMAR: +0.20; Snellen decimal: 0.63)