Evaluation of an Investigational Multifocal Lens
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Alabama
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Montgomery, Alabama, Forenede Stater, 36109
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California
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Mission Viejo, California, Forenede Stater, 92691
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Florida
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Jacksonville, Florida, Forenede Stater, 32205
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Jacksonville, Florida, Forenede Stater, 32250
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Orange Park, Florida, Forenede Stater, 32065
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Saint Augustine, Florida, Forenede Stater, 32092
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Tallahassee, Florida, Forenede Stater, 32308
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Tampa, Florida, Forenede Stater, 33625
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Winter Park, Florida, Forenede Stater, 32792
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Georgia
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Roswell, Georgia, Forenede Stater, 30076
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Kansas
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Pittsburg, Kansas, Forenede Stater, 66762
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Michigan
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East Lansing, Michigan, Forenede Stater, 48823
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New York
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Vestal, New York, Forenede Stater, 13850
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North Carolina
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Denver, North Carolina, Forenede Stater, 28037
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Ohio
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Powell, Ohio, Forenede Stater, 43065
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Springfield, Ohio, Forenede Stater, 45503
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Rhode Island
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Warwick, Rhode Island, Forenede Stater, 02888
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Tennessee
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Memphis, Tennessee, Forenede Stater, 38119
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Texas
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Tyler, Texas, Forenede Stater, 75701
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Virginia
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Salem, Virginia, Forenede Stater, 24153
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- The subjects were required to have read, understand, and signed the Statement of Informed Consent and receive a fully executed copy of the form.
- The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol.
- Between 40 and 70 years of age.
- Subjects must own a wearable pair of spectacles, if required for their distance vision.
- Be an adapted soft contact lens wearer in both eyes (i.e. worn lenses a minimum of 2 days per week for at least 8 hours per wear day, for 1 month of more duration)
- Already be wearing a presbyopic contact lens correction (e.g., reading spectacles over contact lenses, multifocal or monovision contact lenses, etc.) or if not respond positively to at least one symptom on the "Presbyopic Symptoms Questionnaire"*
- The subject's vertex corrected spherical equivalent distance refraction was required to be in the range +3.50 to -5.75 in each eye.
- Refractive cylinder ≤ -0.75 D in each eye.
- ADD power in the range +0.75 D to +2.50 D in each eye.
- Best corrected visual acuity of 20/20-3 or better in each eye.
Exclusion Criteria:
- Currently pregnant or lactating (subjects who became pregnant during the study were discontinued).
- Any ocular or systemic allergies that may have contraindicated contact lens wear.
- Any ocular or systemic disease, autoimmune disease, or use of medication, that may have contraindicated contact lens wear.
- Any ocular abnormality that may have interfered with contact lens wear.
- Use of any ocular medication, with the exception of rewetting drops.
- Any previous intraocular surgery (e.g., radial keratotomy, PRK, LASIK, etc.).
- History of herpetic keratitis.
- History of binocular vision abnormality or strabismus.
- Any infectious disease (e.g., hepatitis, tuberculosis) or a contagious immunosuppressive disease (e.g., HIV).
- History of diabetes.
- Participation in any contact lens or lens care product clinical trial within 30 days prior to study enrollment.
- Any Grade 3 or greater slit lamp findings (e.g., edema, corneal neovascularization, corneal staining, tarsal abnormalities, conjunctival injection) which may contraindicate contact lens wear.
- Any ocular infection or inflammation.
- Any corneal distortion or irregular cornea.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Aktiv komparator: lotrafilcon B / etafilcon A
Subject randomized to this sequence will first be dispensed the lotrafilcon B contact lens and then the etafilcon A contact lens.
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Soft contact lens to be worn as daily wear, monthly replacement modality.
Andre navne:
Soft contact lens to be worn as daily wear, daily disposable modality.
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Eksperimentel: etafilcon A / lotrafilcon B
Subject randomized to this sequence will first be dispensed the etafilcon A contact lens and then the lotrafilcon B contact lens.
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Soft contact lens to be worn as daily wear, monthly replacement modality.
Andre navne:
Soft contact lens to be worn as daily wear, daily disposable modality.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Overall Quality of Vision Using the Contact Lens User Experience (CLUE) TM Questionnaire
Tidsramme: 8 -12 days post wear
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CLUE Overall Quality of Vision is assessed using the Contact Lens User Experience (CLUE)TM questionnaire.
CLUE is a validated patient-reported outcomes questionnaire to assess patient experience attributes of soft, disposable contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18-65.
Scores follow a normal distribution with a population average score of 60 (SD 20), where higher scores indicate a more favorable/positive response.
97% of the scores fall within 0 and 120 (mean +/-3XSD).
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8 -12 days post wear
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Distance Binocular Visual Acuity (LogMAR)
Tidsramme: 8- 12 Days post wear
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Distance time controlled LogMAR Visual Acuity was carried out binocularly with high luminance and high contrast.
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8- 12 Days post wear
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Intermediate Binocular Visual Acuity (LogMAR)
Tidsramme: 8-12 days post wear
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Intermediate time controlled LogMAR Visual Acuity was carried out binocularly using High lumiance and High Contrast.
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8-12 days post wear
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Near Binocular Visual Acuity (LogMAR)
Tidsramme: 8-12 days post wear
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Near time controlled LogMAR Visual Acuity was carried out binocularly using High lumiance and High Contrast.
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8-12 days post wear
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Corneal Staining
Tidsramme: 8 - 12 Days post wear
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Corneal staining is evaluated using Sodium Fluorescein strips.
The Fluorescien strip was lightly placed on the subject's inferior palpebral conjunctiva.
The corneal Staining was graded using the scale Grade 0: No Staining, Grade 1: Trace(Minimal superficial staining or stippling), Grade 2: Mild (Regional or diffuse punctate staining), Grade 3:Moderate(Significant dense coalesced staining, corneal abrasion or foreign body tracks.),
Grade 4 Severe(Severe abrasions greater than 2 mm in diameter, ulcerations, epithelial loss, or full thickness abrasion.).
The data was dichotomized into two group subjects with grade 3 or higher staining, and those subjects with less than Grade 3. Below the percentage of subject eyes with grade 3 or higher is reported for each lens.
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8 - 12 Days post wear
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Bulbar Conjunctival Injection
Tidsramme: 8- 12 Days post wear
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The bulbar is the scelra.
Bulbar Conjunctival Injection was assessed using an Efron Grading scale by 1 unit increments.
Grade 0: Normal, Grade 1: Trace, Grade 2: Mild, Grade 3: Moderate, Grade 4:Severe.
The data was dichotomized into two group subjects with grade 3 or higher Conjunctival injection, and those subjects with less than Grade 3. Below the percentage of subject eyes with grade 3 or higher is reported for each lens.
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8- 12 Days post wear
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Limbal Conjunctival Injection
Tidsramme: 8- 12 Days post wear
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The Limbus is the 1 to 2mm wide zone of conjunctiva and underlying tissue adjacent to where the cornea joins the sclera.
Limbal Conjunctival Injection was assesed using the Efron grading scale in 1 unit increments.
Grade 0: Normal, Grade 1: Trace, Grade 2: Mild, Grade 3: Moderate, Grade 4:Severe.
The data was dichotomized into two group subjects with grade 3 or higher Conjunctival injection, and those subjects with less than Grade 3. Below the percentage of subject eyes with grade 3 or higher is reported for each lens.
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8- 12 Days post wear
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Contact Lens Fitting
Tidsramme: 8- 12 Days post wear
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Contact Lens fitting is reported as a binary response.
Yes- acceptable lens fit, No- unacceptable lens fit.
The percentage of subject eyes with acceptable fit is reported.
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8- 12 Days post wear
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CR-5593
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