Evaluation of an Investigational Multifocal Lens
Přehled studie
Postavení
Postavení
Podmínky
Podmínky
Intervence / Léčba
Intervence / Léčba
Typ studie
Typ studie
Zápis (Aktuální)
Zápis
Fáze
Fáze
- Nelze použít
Kontakty a umístění
Studijní místa
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Alabama
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Montgomery, Alabama, Spojené státy, 36109
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California
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Mission Viejo, California, Spojené státy, 92691
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Florida
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Jacksonville, Florida, Spojené státy, 32205
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Jacksonville, Florida, Spojené státy, 32250
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Orange Park, Florida, Spojené státy, 32065
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Saint Augustine, Florida, Spojené státy, 32092
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Tallahassee, Florida, Spojené státy, 32308
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Tampa, Florida, Spojené státy, 33625
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Winter Park, Florida, Spojené státy, 32792
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Georgia
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Roswell, Georgia, Spojené státy, 30076
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Kansas
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Pittsburg, Kansas, Spojené státy, 66762
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Michigan
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East Lansing, Michigan, Spojené státy, 48823
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New York
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Vestal, New York, Spojené státy, 13850
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North Carolina
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Denver, North Carolina, Spojené státy, 28037
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Ohio
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Powell, Ohio, Spojené státy, 43065
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Springfield, Ohio, Spojené státy, 45503
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Rhode Island
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Warwick, Rhode Island, Spojené státy, 02888
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Tennessee
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Memphis, Tennessee, Spojené státy, 38119
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Texas
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Tyler, Texas, Spojené státy, 75701
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Virginia
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Salem, Virginia, Spojené státy, 24153
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Kritéria účasti
Kritéria způsobilosti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
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.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Léčba
- Přidělení: Randomizované
- Intervenční model: Crossover Assignment
- Maskování: Žádné (otevřený štítek)
Počet zbraní
Zbraně a zásahy
Skupina účastníků / ArmSkupina účastníků / Arm |
Intervence / LéčbaIntervence / Léčba |
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Aktivní komparátor: 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.
Ostatní jména:
Soft contact lens to be worn as daily wear, daily disposable modality.
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Experimentální: 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.
Ostatní jména:
Soft contact lens to be worn as daily wear, daily disposable modality.
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Co je měření studie?
Primární výstupní opatření
Primární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
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Overall Quality of Vision Using the Contact Lens User Experience (CLUE) TM Questionnaire
Časové okno: 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)
Časové okno: 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)
Časové okno: 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)
Časové okno: 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
Časové okno: 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
Časové okno: 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
Časové okno: 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
Časové okno: 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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Spolupracovníci a vyšetřovatelé
Sponzor
Sponzor
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Začátek studia
Primární dokončení (Aktuální)
Primární dokončení
Dokončení studie (Aktuální)
Dokončení studie
Termíny zápisu do studia
První předloženo
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
První zveřejněno
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Aktuální)
Poslední zveřejněná aktualizace
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Naposledy ověřeno
Více informací
Termíny související s touto studií
Další relevantní podmínky MeSH
Další identifikační čísla studie
Další identifikační čísla studie
- CR-5593
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