The effect of astigmatism axis location on multifocal contact lens visual performance

CooperVision (United States)0 个研究点目标入组 30 人开始时间: 2020年6月22日最近更新: 2020年11月24日

适应症

试验速览

暂无简介。

•1. At least 40 years old
•2. Have read and understood the participant information sheet in English
•3. Have read, signed and dated the Informed Consent
•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. Current multifocal contact lens wearer
•7. Spectacle refraction:
•Distance: Sphere: -6.00D to + 4.00D
•Astigmatism: -0.50DC to -1.00DC in each eye
•Axis: 180o ± 20o or 90o ± 20o
•Near Addition:+0.75D to +2:50D
•7. Be willing and able to adhere to the instructions set in the clinical protocol and maintain the appointment schedule.

•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. Any moderate or severe ocular condition observed during the slit-lamp examination at the enrolment visit
•5. History of herpetic keratitis, ocular surgery or irregular cornea
•6. Known pregnancy or lactation during the study period
•7. Enrolment of the investigator or his/her staff, family members of the investigator, family members of the investigator’s staff, or individuals living in the households of these individuals

发起方

CooperVision (United States)