Trial Outcomes & Findings for A Dispensing Clinical Trial of a Study Test Silicone Hydrogel Lens Against Control Lens Over 1 Week (NCT NCT02500368)

NCT ID: NCT02500368

Last Updated: 2020-07-29

Results Overview

Subjective ratings scale (0-100) assessed: 0=Cannot be worn, causes pain, 20=Frequently irritating, 40=Occasionally irritating, 60=Occasionally noticable but not irritating, 80=Rarely noticeable, 100=Cannot be felt ever. Time points for comfort: lens dispense at baseline, lens insertion at 1 week, and overall at 1 week.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

41 participants

Primary outcome timeframe

Baseline and 1 week

Results posted on

2020-07-29

Participant Flow

One participant discontinued from the study as a screen failure before lens randomization.

Participant milestones

Participant milestones
Measure
Silicone Hydrogel Lens (Test), Then Enfilcon A Lens (Control)
Participants were randomized to wear silicone hydrogel lens (test) for 1 week, then cross over to the enfilcon A lens (control). silicone hydrogel lens (test): contact lens enfilcon A lens (control): contact lens
Enfilcon A Lens (Control), Then Silicone Hydrogel Lens (Test)
Participants were randomized to wear enfilcon A lens (control) for 1 week, then cross over to the silicone hydrogel lens (test). enfilcon A lens (control): contact lens silicone hydrogel lens (test): contact lens
First Intervention (1 Week)
STARTED
20
20
First Intervention (1 Week)
COMPLETED
20
20
First Intervention (1 Week)
NOT COMPLETED
0
0
Second Intervention (1 Week)
STARTED
20
20
Second Intervention (1 Week)
COMPLETED
20
20
Second Intervention (1 Week)
NOT COMPLETED
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Dispensing Clinical Trial of a Study Test Silicone Hydrogel Lens Against Control Lens Over 1 Week

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Overall Baseline Characteristics
n=41 Participants
Participants were randomized to wear silicone hydrogel lens (test) or enfilcon A lens (control) for 1 week during the cross over study.
Age, Continuous
24 years
n=5 Participants
Sex: Female, Male
Female
28 Participants
n=5 Participants
Sex: Female, Male
Male
13 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Baseline and 1 week

Subjective ratings scale (0-100) assessed: 0=Cannot be worn, causes pain, 20=Frequently irritating, 40=Occasionally irritating, 60=Occasionally noticable but not irritating, 80=Rarely noticeable, 100=Cannot be felt ever. Time points for comfort: lens dispense at baseline, lens insertion at 1 week, and overall at 1 week.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Comfort
Lens dispense at baseline
90 units on a scale
Standard Deviation 11
91 units on a scale
Standard Deviation 10
Comfort
Lens insertion at 1 week
92 units on a scale
Standard Deviation 9
90 units on a scale
Standard Deviation 14
Comfort
Overall comfort at 1 week
79 units on a scale
Standard Deviation 15
81 units on a scale
Standard Deviation 13

PRIMARY outcome

Timeframe: Baseline and 1 week

Subjective ratings scale (0-100): 0=Cannot be worn, extremely dry, 20=Frequently Irritating, 40=Occasionally irritating, 60=Occasionally noticeable but not irritating, 80=Rarely noticeable, 100=No dryness experienced at any time. Time points for dryness: lens dispense at baseline, lens insertion at 1 week, and overall at 1 week.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Dryness
Lens dispense at baseline
94 units on a scale
Standard Deviation 10
94 units on a scale
Standard Deviation 10
Dryness
Lens insertion at 1 week
94 units on a scale
Standard Deviation 8
92 units on a scale
Standard Deviation 12
Dryness
Overall dryness at 1 week
75 units on a scale
Standard Deviation 19
78 units on a scale
Standard Deviation 16

SECONDARY outcome

Timeframe: Baseline and 1 week

Grading scale 0-4, 0.25 steps, 0=excellent; 4=severely reduced.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Wettability
Baseline
1.09 units on a scale
Standard Deviation 0.60
1.18 units on a scale
Standard Deviation 0.87
Lens Wettability
1 week
1.17 units on a scale
Standard Deviation 0.76
1.38 units on a scale
Standard Deviation 0.79

SECONDARY outcome

Timeframe: Baseline

Grade ratings category (smooth, grainy, or other)

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=80 Eyes
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=80 Eyes
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Surface Appearance
Smooth
76 Eyes
70 Eyes
Surface Appearance
Grainy
3 Eyes
4 Eyes
Surface Appearance
Other
1 Eyes
6 Eyes

SECONDARY outcome

Timeframe: 1 week

Grade ratings category (smooth, grainy, or other)

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=80 Eyes
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=80 Eyes
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Surface Appearance
Smooth
77 Eyes
72 Eyes
Surface Appearance
Grainy
1 Eyes
4 Eyes
Surface Appearance
Other
2 Eyes
4 Eyes

SECONDARY outcome

Timeframe: Baseline and 1 week

Logarithm of the Minimum Angle or Resolution (LogMAR) Chart

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
High Contrast Acuity at High Room Illumination
Baseline
-0.10 LogMAR
Standard Deviation 0.06
-0.09 LogMAR
Standard Deviation 0.04
High Contrast Acuity at High Room Illumination
1 week
-0.10 LogMAR
Standard Deviation 0.05
-0.08 LogMAR
Standard Deviation 0.06

SECONDARY outcome

Timeframe: Baseline and 1 week

Lens Deposits Scale 0-4, 0.25 steps. 0=excellent; 4=severely reduced

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Deposition
Baseline
0.06 units on a scale
Standard Deviation 0.13
0.12 units on a scale
Standard Deviation 0.21
Lens Deposition
1 week
0.28 units on a scale
Standard Deviation 0.32
0.38 units on a scale
Standard Deviation 0.48

SECONDARY outcome

Timeframe: Baseline and 1 week

Lenses were evaluated for defects, scratches, fibers, blue specks, and other findings.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=80 Lenses
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=80 Lenses
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Problems
Baseline, Blue specs
0 Lenses
2 Lenses
Lens Problems
Baseline, Fibers
0 Lenses
1 Lenses
Lens Problems
Baseline, Nick
0 Lenses
1 Lenses
Lens Problems
1 week, Blue specs
0 Lenses
2 Lenses
Lens Problems
1 week, Nick
0 Lenses
1 Lenses
Lens Problems
1 week, Particles
0 Lenses
3 Lenses

SECONDARY outcome

Timeframe: Baseline

Lens centration was evaluated by the conjunctival overlap to determine whether lens was slightly or excessively decentered. (mm, 0.1 steps) N - Nasal, T - Temporal, S - Superior, I - Interior, N/S - Nasal/Superior, N/I - Nasal/Interior, T/S - Temporal/Superior T/I - Temporal/Interior

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=80 Eyes
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=80 Eyes
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Centration
No decentration
46 eyes
32 eyes
Lens Centration
N
4 eyes
3 eyes
Lens Centration
T
16 eyes
16 eyes
Lens Centration
S
6 eyes
6 eyes
Lens Centration
I
4 eyes
11 eyes
Lens Centration
N/S
0 eyes
0 eyes
Lens Centration
N/I
0 eyes
2 eyes
Lens Centration
T/S
2 eyes
6 eyes
Lens Centration
T/I
2 eyes
4 eyes

SECONDARY outcome

Timeframe: 1 week

Lens centration was evaluated by the conjunctival overlap to determine whether lens was slightly or excessively decentered. (mm, 0.1 steps) N - Nasal, T - Temporal, S - Superior, I - Interior, N/S - Nasal/Superior, N/I - Nasal/Interior, T/S - Temporal/Superior T/I - Temporal/Interior

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=80 Eyes
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=80 Eyes
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Centration
T/S
3 eyes
2 eyes
Lens Centration
No decentration
43 eyes
51 eyes
Lens Centration
N
1 eyes
1 eyes
Lens Centration
T
12 eyes
6 eyes
Lens Centration
S
8 eyes
4 eyes
Lens Centration
I
10 eyes
9 eyes
Lens Centration
N/S
1 eyes
0 eyes
Lens Centration
N/I
1 eyes
0 eyes
Lens Centration
T/I
1 eyes
7 eyes

SECONDARY outcome

Timeframe: Baseline and 1 week

Post-blink movement evaluated by estimating the distance the lens was moving immediately after a blink. Primary Gaze: (mm, 0.1 steps)

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Post-blink Movement
Baseline
0.26 mm steps
Standard Deviation 0.16
0.25 mm steps
Standard Deviation 0.10
Post-blink Movement
1 week
0.24 mm steps
Standard Deviation 0.10
0.27 mm steps
Standard Deviation 0.13

SECONDARY outcome

Timeframe: Baseline and 1 week

Lens tightness Scale 0%-100%, 0%=extremely loose fit, 50%=optimal push resistance and smooth return, 100%=no movement.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Lens Tightness
Baseline
50.9 percentage of tightness
Standard Deviation 7.8
48.1 percentage of tightness
Standard Deviation 6.3
Lens Tightness
1 week
48.8 percentage of tightness
Standard Deviation 9.1
47.9 percentage of tightness
Standard Deviation 6.4

SECONDARY outcome

Timeframe: Baseline and 1 week

Subjective ratings scale (0-100): 0=Extremely poor vision all of the time; cannot function, 20=Frequently annoying vision problems, 40=Occasionally annoying vision problems, 60=Occasionally noticeable but not annoying vision problems, 80=Rarely noticeable vision problems, 100=Excellent vision all of the time. Different time points were taken for vision quality: lens dispense at baseline, lens insertion at 1 week, and overall at 1 week.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Visual Quality
Lens dispense at baseline
94 units on a scale
Standard Deviation 7
93 units on a scale
Standard Deviation 9
Visual Quality
Lens insertion at 1 week
95 units on a scale
Standard Deviation 7
94 units on a scale
Standard Deviation 9
Visual Quality
Overall vision quality at 1 week
88 units on a scale
Standard Deviation 12
88 units on a scale
Standard Deviation 13

SECONDARY outcome

Timeframe: Baseline and 1 week

Subjective ratings scale (0-100): 0=Could not place lens on eye, 20=Frequently takes multiple attempts to place on eye; often unsuccessful, 40=Frequently takes multiple attempts to place on eye, 60=Occasionally takes a few attempts to place on eye, 80=Rarely difficult to place on eye, 100=Always easy to place lens on eye

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Ease of Lens Insertion
Baseline
97 units on a scale
Standard Deviation 5
92 units on a scale
Standard Deviation 10
Ease of Lens Insertion
1 week
91 units on a scale
Standard Deviation 9
90 units on a scale
Standard Deviation 10

SECONDARY outcome

Timeframe: 1 week

Subjective ratings scale (0-100): 0=Could not remove lens from eye, 20=Frequently takes multiple attempts to remove from eye; often unsuccessful, 40=Frequently takes multiple attempts to remove from eye, 60=Occasionally takes a few attempts to remove from eye, 80=Rarely difficult to remove from eye, 100=Always easy to remove lens from eye.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Ease of Lens Removal
86 units on a scale
Standard Deviation 15
90 units on a scale
Standard Deviation 12

SECONDARY outcome

Timeframe: Baseline and 1 week

Overall Lens Fit Scale 0-4, 0.25 steps 0=Very poor (lens should not be worn at all); 1. Poor (lens could be worn with supervision only); 2. Fair (would prefer to refit, but clinically acceptable); 3. Good (fit could be slightly improved); 4. Very good (optimal)

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Overall Lens Fit
Baseline
3.35 units on a scale
Standard Deviation 0.42
3.33 units on a scale
Standard Deviation 0.36
Overall Lens Fit
1 week
3.36 units on a scale
Standard Deviation 0.41
3.38 units on a scale
Standard Deviation 0.48

SECONDARY outcome

Timeframe: Baseline and 1 week

Bulbar hyperemia assessed using scale 0-4, 0.5 steps, 0=No hyperemia, 4=Severe hyperemia.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Bulbar Hyperemia
Baseline
1.96 units on a scale
Standard Deviation 0.50
1.96 units on a scale
Standard Deviation 0.50
Bulbar Hyperemia
1 week
1.87 units on a scale
Standard Deviation 0.44
1.95 units on a scale
Standard Deviation 0.41

SECONDARY outcome

Timeframe: Baseline and 1 week

Limbal hyperemia assessed using scale 0-4, 0.5 steps, 0=No hyperemia, 4=Severe hyperemia.

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Limbal Hyperemia
Baseline
1.76 units on a scale
Standard Deviation 0.51
1.76 units on a scale
Standard Deviation 0.51
Limbal Hyperemia
1 week
1.68 units on a scale
Standard Deviation 0.42
1.71 units on a scale
Standard Deviation 0.37

SECONDARY outcome

Timeframe: 1 week

Corneal Staining: Dehydration Staining: Yes/No

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Corneal Dehydration Staining
Both eyes
3 participants
1 participants
Corneal Dehydration Staining
One eye
2 participants
2 participants

SECONDARY outcome

Timeframe: Baseline and 1 week

Corneal staining extent, grade as % of each zone: C - Central, N - Nasal, T - Temporal, S - Superior, I - Interior

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Corneal Staining (Extent)
Central - baseline
1.21 percentage of cornea
Standard Deviation 4.97
1.21 percentage of cornea
Standard Deviation 4.97
Corneal Staining (Extent)
Central - 1 week
0.64 percentage of cornea
Standard Deviation 1.73
0.75 percentage of cornea
Standard Deviation 4.97
Corneal Staining (Extent)
Nasal - baseline
4.76 percentage of cornea
Standard Deviation 9.10
4.76 percentage of cornea
Standard Deviation 9.10
Corneal Staining (Extent)
Nasal - 1 week
2.20 percentage of cornea
Standard Deviation 6.68
1.43 percentage of cornea
Standard Deviation 4.79
Corneal Staining (Extent)
Temporal - baseline
2.04 percentage of cornea
Standard Deviation 5.47
2.04 percentage of cornea
Standard Deviation 5.47
Corneal Staining (Extent)
Temporal - 1 week
1.38 percentage of cornea
Standard Deviation 4.05
1.04 percentage of cornea
Standard Deviation 2.92
Corneal Staining (Extent)
Superior - baseline
2.15 percentage of cornea
Standard Deviation 7.21
2.15 percentage of cornea
Standard Deviation 7.21
Corneal Staining (Extent)
Superior - 1 week
1.75 percentage of cornea
Standard Deviation 4.42
0.69 percentage of cornea
Standard Deviation 2.07
Corneal Staining (Extent)
Inferior - baseline
5.88 percentage of cornea
Standard Deviation 10.85
5.88 percentage of cornea
Standard Deviation 10.85
Corneal Staining (Extent)
Inferior - 1 week
6.48 percentage of cornea
Standard Deviation 11.52
5.01 percentage of cornea
Standard Deviation 9.23

SECONDARY outcome

Timeframe: Baseline and 1 week.

Conjunctival Indentation 5 locations (central, nasal, temporal, superior, inferior): Scale 0-4, 0.5 steps; 0=None, 1=Trace, 2=Mild, 3=Moderate, 4=Severe

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Conjunctival Indentation
Nasal - baseline
0.01 units on a scale
Standard Deviation 0.11
0.01 units on a scale
Standard Deviation 0.11
Conjunctival Indentation
Nasal - 1 week
0.36 units on a scale
Standard Deviation 0.64
0.01 units on a scale
Standard Deviation 0.06
Conjunctival Indentation
Temporal - baseline
0.00 units on a scale
Standard Deviation 0.00
0.00 units on a scale
Standard Deviation 0.00
Conjunctival Indentation
Temporal - 1 week
0.39 units on a scale
Standard Deviation 0.68
0.02 units on a scale
Standard Deviation 0.10
Conjunctival Indentation
Superior - baseline
0.00 units on a scale
Standard Deviation 0.00
0.00 units on a scale
Standard Deviation 0.00
Conjunctival Indentation
Superior - 1 week
0.21 units on a scale
Standard Deviation 0.49
0.02 units on a scale
Standard Deviation 0.10
Conjunctival Indentation
Inferior - baseline
0.00 units on a scale
Standard Deviation 0.00
0.00 units on a scale
Standard Deviation 0.00
Conjunctival Indentation
Inferior - 1 week
0.34 units on a scale
Standard Deviation 0.67
0.03 units on a scale
Standard Deviation 0.15

SECONDARY outcome

Timeframe: Baseline and 1 week

Conjunctival Staining 5 locations (central, nasal, temporal, superior, inferior): Scale 0-4; 0.5 steps, 0=None,1=Minimal diffuse punctuate, 2=Coalescent punctuate, 3=Confluent, 4=Deep confluent

Outcome measures

Outcome measures
Measure
Silicone Hydrogel Lens (Test)
n=40 Participants
Participants were randomized to wear silicone hydrogel lens (test) for 1 week during the cross over study. silicone hydrogel lens (test): contact lens
Enfilcon A Lens (Control)
n=40 Participants
Participants were randomized to wear enfilcon A lens (control) for 1 week during the cross over study. enfilcon A lens (control): contact lens
Conjunctival Staining
Nasal - baseline
0.48 units on a scale
Standard Deviation 0.45
0.48 units on a scale
Standard Deviation 0.45
Conjunctival Staining
Nasal - 1 week
0.67 units on a scale
Standard Deviation 0.58
0.46 units on a scale
Standard Deviation 0.40
Conjunctival Staining
Temporal - baseline
0.47 units on a scale
Standard Deviation 0.49
0.47 units on a scale
Standard Deviation 0.49
Conjunctival Staining
Temporal - 1 week
0.72 units on a scale
Standard Deviation 0.63
0.55 units on a scale
Standard Deviation 0.43
Conjunctival Staining
Superior - baseline
0.12 units on a scale
Standard Deviation 0.29
0.12 units on a scale
Standard Deviation 0.29
Conjunctival Staining
Superior - 1 week
0.25 units on a scale
Standard Deviation 0.38
0.14 units on a scale
Standard Deviation 0.26
Conjunctival Staining
Inferior - baseline
0.23 units on a scale
Standard Deviation 0.38
0.23 units on a scale
Standard Deviation 0.38
Conjunctival Staining
Inferior - 1 week
0.49 units on a scale
Standard Deviation 0.52
0.32 units on a scale
Standard Deviation 0.37

Adverse Events

Silicone Hydrogel Lens (Test)

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Enfilcon A Lens (Control)

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Sr. Manager Clinical Research

CooperVision Inc.

Phone: (925) 730-6754

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: OTHER