Pauline Kang1, Christine F Wildsoet2. 1. School of Optometry University of California, Berkeley, USA; School of Optometry and Vision Science, University of New South Wales, Australia. Electronic address: p.kang@unsw.edu.au. 2. School of Optometry University of California, Berkeley, USA.
Abstract
PURPOSE: To characterise the effects on accommodation and binocular vision in young adults of 2 distance centre multifocal soft contact lenses (MFSCLs), differing in add power. METHODS:Twenty-four young adult myopes (18-28 years; 20 females, 4 males) had baseline visual acuity, accommodation, near phoria, fixation disparity and stereopsis data collected with single vision (SV) SCLs. The same set of measurements was repeated immediately after subjects were fitted with each of two MFSCLs (with either +1.50 or +3.00 D add), and after 2 weeks of daily wear in each case. The order of testing was randomised and a one-week washout period was allowed between the first and second MFSCL trials. RESULTS: Differences in distance and near acuities with MFSCLs compared to SVSCLs were small and clinically insignificant. Compared to responses with SVSCLs, MFSCLs increased accommodative lags with this change reaching statistical significance for the +1.50 D add lens. Furthermore, both MFSCLs induced significant shifts in near phorias in the exo direction. Finally, there were no significant differences in stereopsis and fixation disparity with MFSCLs compared to SVSCLs. CONCLUSION: Differences in acuities, accommodation accuracy and binocular posture with MFSCLs compared to SVSCLs were clinically small and mostly not significant. These results predict good tolerance of MFSCLs in young patients fitted with them for myopia control.
RCT Entities:
PURPOSE: To characterise the effects on accommodation and binocular vision in young adults of 2 distance centre multifocal soft contact lenses (MFSCLs), differing in add power. METHODS: Twenty-four young adult myopes (18-28 years; 20 females, 4 males) had baseline visual acuity, accommodation, near phoria, fixation disparity and stereopsis data collected with single vision (SV) SCLs. The same set of measurements was repeated immediately after subjects were fitted with each of two MFSCLs (with either +1.50 or +3.00 D add), and after 2 weeks of daily wear in each case. The order of testing was randomised and a one-week washout period was allowed between the first and second MFSCL trials. RESULTS: Differences in distance and near acuities with MFSCLs compared to SVSCLs were small and clinically insignificant. Compared to responses with SVSCLs, MFSCLs increased accommodative lags with this change reaching statistical significance for the +1.50 D add lens. Furthermore, both MFSCLs induced significant shifts in near phorias in the exo direction. Finally, there were no significant differences in stereopsis and fixation disparity with MFSCLs compared to SVSCLs. CONCLUSION: Differences in acuities, accommodation accuracy and binocular posture with MFSCLs compared to SVSCLs were clinically small and mostly not significant. These results predict good tolerance of MFSCLs in young patients fitted with them for myopia control.
Authors: Krystal L Schulle; David A Berntsen; Loraine T Sinnott; Katherine M Bickle; Anita T Gostovic; Gilbert E Pierce; Lisa A Jones-Jordan; Donald O Mutti; Jeffrey J Walline Journal: Optom Vis Sci Date: 2018-04 Impact factor: 1.973
Authors: Hannah R Gregory; Augustine N Nti; James S Wolffsohn; David A Berntsen; Eric R Ritchey Journal: Optom Vis Sci Date: 2021-08-01 Impact factor: 2.106
Authors: Hannah R Gregory; Augustine N Nti; James S Wolffsohn; David A Berntsen; Eric R Ritchey Journal: Optom Vis Sci Date: 2021-03-01 Impact factor: 2.106