Presbyopia (near fatigue)
Conditions
Interventions
Observation group:None
Sponsors
Eye Hospital, Wenzhou Medical University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1.Age 40 and above, male or female not limited; 2.Experienced in wearing soft contact lenses or operating multifocal soft lenses; 3.Voluntarily sign an informed consent form before the experiment, and fully understand the content, process, and possible adverse reactions of the experiment; 4.Suffering from presbyopia, and according to subjective refraction, the range of added light intensity at close range for each eye is+0.75D (including+0.75D) to+2.50D (including+2.50D); 5.Long distance lens correction is required, and according to subjective refraction, each eye should be between 0.00 D (including 0.00 D) and -7.75 D (including -7.75 D); 6.The best corrected far vision of the examined eye can reach 5.0.
Exclusion criteria
Exclusion criteria: 1.Using any local ophthalmic or systemic medication that may interfere with the wearing of contact lenses or require the removal of contact lenses during the day; 2.The subjective refraction astigmatism degree of the examined eye is greater than 1.00D; 3.Individuals with the following eye conditions within one month prior to signing the informed consent form: moderate to severe dry eye syndrome (multiple quadrant corneal damage or tear film rupture time (TBUT)grade 2, which have been determined by the researcher to be unsuitable; 4.Have suffered from or currently suffer from the following eye diseases: chronic inflammation of the eye such as chronic keratitis, chronic uveitis, chronic dacryocystitis, chronic blepharitis, grade 2 or above papillary conjunctivitis (GPC), iritis; Other eye diseases: glaucoma, abnormal corneal perception, incomplete eyelid closure, ptosis, dominant strabismus, cataracts, keratoconus; 5.Currently suffer from systemic diseases that may affect the eyes, or have been diagnosed by researchers as having diseases that may have adverse effects on the eyes during the research process; 6.Individuals who are allergic to contact lenses or related care products, or have experienced serious adverse reactions while wearing contact lenses; 7.Prior to enrollment in this experiment, corneal surgery was performed; 8.Pregnant or lactating women; 9.The researcher believes that it is not suitable to participate in this study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Functional Visual Acuity; | — |
Secondary
| Measure | Time frame |
|---|---|
| Objective Visual Quality Analysis System Inspection;reaction time; | — |
Countries
China
Contacts
Public ContactRenai Chen
Eye Hospital, Wenzhou Medical University
Outcome results
None listed