Posters

Comparison of contrast sensitivity, visual acuity, twilight vision and corneal topography of soft and rigid gas-permeable contact lens wearers

Poster Details

First Author: A.Kasumović CROATIA

Co Author(s):    I. Krolo   I. Radman   M. Malenica Ravlić   K. Lončarić   Z. Vatavuk        

Abstract Details

Purpose:

To assess the visual function before and after correction with soft and rigid gas permeable contact lenses (CLs) in healthy subjects as well as their visual perfomance, including contrast sensitivity (CS) with spatial frequency, twilight vision (TV), visual acuity, and corneal topography parameters.

Setting:

Sestre milosrdnice University Hospital Center

Methods:

60 eyes corrected with soft contact lenses (SCLs) and 30 eyes with rigid gas permeable contact lenses (RGPCLs) were enrolled in this prospective study. All patients underwent following measurements: best spectacle–corrected visual acuity (BSCVA), best contact lens-corrected visual acuity (BCLCVA), TV and CS (Vista Vision Far-Pola, DMD MedTech charts), autorefractokeratometry (Indo, eRK-10) and corneal topography (Pentacam, OCULUS). All parameters were evaluated before and after CLs fitting and 2 months after baseline. Exclusion criteria included anterior and posterior segment pathology, amblyopia, prior contact lens wear and ocular surgery.

Results:

CLs wear showed improvement of CS and TV compared to spectacles. Visual performance was statistically significantly better in group fitted with RGPCLs as oppose to those with SCLs. There were no statistically significant changes in keratometry values measured by autorefractokeratometer and corneal topography at 2-months follow-up.

Conclusions:

CLs wear improved visual performance when compared to spectacles. RGPCLs showes superiority to SCLs in visual acuity, CS and TV.

Financial Disclosure:

None