The impact of astigmatic correction with Precision 1 Toric contact lenses on functional vision with digital devices

Not Applicable

Completed

• Conditions: Astigmatism; Eye - Diseases / disorders of the eye

• Registration Number: ACTRN12622001575729
• Lead Sponsor: Queensland University of Technology

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2022-12-20
• Study Completion: 2023-06-06
• Last Update Posted: 12 December 2023

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 15

Inclusion Criteria

Healthy adults with normal corrected visual acuity in each eye
Refractive astigmatism between -0.50 and -1.50 D
Spherical refractive error of between 0.00 and -6.00 D
Normal binocular vision and accommodative function
Prior history of successful soft contact lens wear

Exclusion Criteria

History of eye disease, surgery, or injury
Contraindications to contact lens wear
Signs or symptoms of dry eye or ocular surface disease
Regular rigid contact lens wear
Unable to achieve a satisfactory lens fit with the study contact lenses

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Change in near visual performance (high contrast and low contrast logMAR near visual acuity at 40 cm) associated with astigmatism correcting contact lenses.[ Following lens insertion and settling];Safety of astigmatism correcting contact lenses (incidence of adverse events graded using clinical grading scales)[ Following lens insertion and settling and assessment of visual performance]

Secondary Outcome Measures

Name	Time	Method
Change in functional visual performance involving more complex visual and cognitive skills (reading speed for high contrast and low contrast smart phone reading task) associated with astigmatism correcting contact lenses[ Following lens insertion and settling];Change in functional visual performance involving more complex visual and cognitive skills (time to complete Trail Making Test) associated with astigmatism correcting contact lenses[ Following lens insertion and settling ];Change in functional visual performance involving more complex visual and cognitive skills (performance on Digit Symbol Substitution Test) associated with astigmatism correcting contact lenses[ Following lens insertion and settling ];Change in objective markers of visual fatigue (change in palpebral aperture width, blink rate, pupil size) associated with near vision tasks on digital devices associated with astigmatism correcting contact lenses.[ Following lens insertion and settling and assessment of visual performance]