The Experts below are selected from a list of 486 Experts worldwide ranked by ideXlab platform
Craig A. Woods - One of the best experts on this subject based on the ideXlab platform.
-
An international survey of Toric Contact Lens prescribing
Eye & Contact Lens-science and Clinical Practice, 2013Co-Authors: Nathan Efron, Craig A. WoodsAbstract:OBJECTIVES: To characterize Toric Contact Lens prescribing worldwide. METHODS: Up to 1,000 survey forms were sent to Contact Lens fitters in up to 39 countries between January and March every year for 5 consecutive years (2007-2011). Practitioners were asked to record data relating to the first 10 Contact Lens fits or refits performed after receiving the survey form. Only data for Toric and spherical soft Lens fits were analyzed. Survey data collected since 1996 were also analyzed for 7 nations to assess Toric Lens fitting trends since that time. RESULTS: Data were collected in relation to 21,150 Toric fits (25%) and 62,150 spherical fits (75%). Toric prescribing ranged from 6% of Lenses in Russia to 48% in Portugal. Compared with spherical fittings, Toric fittings can be characterized as follows: older age (29.8 ± 11.4 years vs. 27.6 ± 10.8 years for spherical Lenses); men are overrepresented (38% vs. 34%); greater proportion of new fits (39% vs. 32%); use of silicone hydrogel Lenses (49% vs. 39%); and lower proportion of daily disposable Lenses (14% vs. 28%). There has been a continuous increase in Toric Lens prescribing between 1996 and 2011. The proportion of Toric Lens fits was positively related to the gross domestic product at purchasing power parity per capita for year 2011 (r = 0.21; P=0.004). CONCLUSIONS: At the present time, in the majority of countries surveyed, Toric soft Contact Lens prescribing falls short of that required to correct clinically significant astigmatism (≥ 0.75 diopters) in all Lens wearers.
-
soft Toric Contact Lens prescribing in different countries
Faculty of Health; Institute of Health and Biomedical Innovation, 2010Co-Authors: Nathan Efron, Eef Van Der Worp, Magne Helland, Motozumi Itoi, Deborah Jones, Jason J. Nichols, Craig A. WoodsAbstract:There have been significant improvements in Toric soft Contact Lens design over the past decade. Data from our international Contact Lens prescribing survey were mined to assess recent trends in Toric soft Contact Lens fitting. This survey was conducted by sending up to 1000 survey forms to Contact Lens fitters in Australia, Canada, Japan, the Netherlands, Norway, the UK and the USA each year between 2000 and 2009. Practitioners were asked to record data relating to the first 10 Contact Lens fits or refits performed after receiving the forms and to return them to us for analysis. The data revealed a gradual increase in the extent of Toric soft Lens fitting this century. Excluding Japan – which had a consistently low rate of soft Toric Lens fitting over the survey period – soft Toric Lenses now represent over 35% of all soft Lenses prescribed; it can be assumed that, on average (and again excluding Japan), all cases of astigmatism 0.75 D or less remains uncorrected among Contact Lens wearers. Toric Lenses are fitted more to those who are older, full-time wearers and reusable Lens wearers, and less to those wearing silicone hydrogel and extended wear Lenses.
Jager M.j. - One of the best experts on this subject based on the ideXlab platform.
-
Pancorneal Contact Lens with a Toric edge: a new concept in keratoconus
'SAGE Publications', 2011Co-Authors: Kamar S., Vervaet C., Luyten G.p.m., Jager M.j.Abstract:PURPOSE To investigate whether fitting a patient with keratoconus to a pancorneal Toric rigid gas-permeable (RGP) Contact Lens leads to a change in corneal compression and improves the best-corrected visual acuity (BCVA) and keratometry values. METHODS Thirty eyes with keratoconus were fitted with a newly designed pancorneal Toric RGP Contact Lens. Each patient was examined at the time of enrollment and after having used the new Contact Lens for at least 2 months. Corneal topography was performed both times. RESULTS A change in corneal compression was noticed in 23 eyes (77%). Following the use of the pancorneal Toric RGP Contact Lens, the average BCVA improved significantly (p=0.007), with a mean BCVA of 0.63 (SD 0.15) before and 0.70 (SD 0.18) after using the Toric Contact Lens. No significant changes were seen in the mean vertical and horizontal K-values or the mean E-values. CONCLUSIONS While no significant measurable differences in K- and E-values were observed, fitting of a pancorneal Toric RGP Contact Lens in keratoconus led to a marked improvement in visual acuity and a visible change in corneal compression.Ophthalmic researc
-
Pancorneal Contact Lens with a Toric edge: a new concept in keratoconus
'SAGE Publications', 2011Co-Authors: Kamar S., Vervaet C., Luyten G.p.m., Jager M.j.Abstract:PURPOSE To investigate whether fitting a patient with keratoconus to a pancorneal Toric rigid gas-permeable (RGP) Contact Lens leads to a change in corneal compression and improves the best-corrected visual acuity (BCVA) and keratometry values. METHODS Thirty eyes with keratoconus were fitted with a newly designed pancorneal Toric RGP Contact Lens. Each patient was examined at the time of enrollment and after having used the new Contact Lens for at least 2 months. Corneal topography was performed both times. RESULTS A change in corneal compression was noticed in 23 eyes (77%). Following the use of the pancorneal Toric RGP Contact Lens, the average BCVA improved significantly (p=0.007), with a mean BCVA of 0.63 (SD 0.15) before and 0.70 (SD 0.18) after using the Toric Contact Lens. No significant changes were seen in the mean vertical and horizontal K-values or the mean E-values. CONCLUSIONS While no significant measurable differences in K- and E-values were observed, fitting of a pancorneal Toric RGP Contact Lens in keratoconus led to a marked improvement in visual acuity and a visible change in corneal compression
Mari Komatsu - One of the best experts on this subject based on the ideXlab platform.
-
comparison of collamer Toric Contact Lens implantation and wavefront guided laser in situ keratomileusis for high myopic astigmatism
Journal of Cataract and Refractive Surgery, 2008Co-Authors: Kazutaka Kamiya, Kimiya Shimizu, Akihito Igarashi, Mari KomatsuAbstract:Purpose To compare the postoperative visual outcomes after implantation of a Collamer Toric implantable Contact Lens (ICL) and after wavefront-guided laser in situ keratomileusis in high myopic astigmatism. Setting Department of Ophthalmology, Kitasato University, Kanagawa, Japan. Methods This study comprised 30 eyes (18 patients) having Toric ICL implantation and 24 eyes (17 patients) having wavefront-guided LASIK (Technolas 217z) to correct high myopic astigmatism (manifest spherical equivalent [SE] ≤−6.0 diopters [D]; manifest refractive cylinder ≥1.0 D). The safety, efficacy, predictability, stability, and adverse events were assessed preoperatively and 1 week and 1, 3, and 6 months postoperatively. Results At 6 months, the mean safety index was 1.28 ± 0.25 (SD) in the ICL group and 1.01 ± 0.16 in the LASIK group and the mean efficacy index, 0.87 ± 0.15 and 0.83 ± 0.23, respectively. All eyes in the ICL group and 71% of eyes in the LASIK group were within ±1.00 D of the targeted SE correction at 6 months. The mean change in manifest refraction from 1 week to 6 months was −0.04 ± 0.24 D in the ICL group and −0.60 ± 0.49 D in the LASIK group. There were no significant complications in the ICL group; 2 eyes (8.3%) in the LASIK group required enhancement ablations. Conclusion Toric ICL implantation was better than wavefront-guided LASIK in eyes with high myopic astigmatism in almost all measures of safety, efficacy, predictability, and stability, suggesting that Toric ICL implantation may become a viable surgical option to treat high myopic astigmatism.
Nathan Efron - One of the best experts on this subject based on the ideXlab platform.
-
An international survey of Toric Contact Lens prescribing
Eye & Contact Lens-science and Clinical Practice, 2013Co-Authors: Nathan Efron, Craig A. WoodsAbstract:OBJECTIVES: To characterize Toric Contact Lens prescribing worldwide. METHODS: Up to 1,000 survey forms were sent to Contact Lens fitters in up to 39 countries between January and March every year for 5 consecutive years (2007-2011). Practitioners were asked to record data relating to the first 10 Contact Lens fits or refits performed after receiving the survey form. Only data for Toric and spherical soft Lens fits were analyzed. Survey data collected since 1996 were also analyzed for 7 nations to assess Toric Lens fitting trends since that time. RESULTS: Data were collected in relation to 21,150 Toric fits (25%) and 62,150 spherical fits (75%). Toric prescribing ranged from 6% of Lenses in Russia to 48% in Portugal. Compared with spherical fittings, Toric fittings can be characterized as follows: older age (29.8 ± 11.4 years vs. 27.6 ± 10.8 years for spherical Lenses); men are overrepresented (38% vs. 34%); greater proportion of new fits (39% vs. 32%); use of silicone hydrogel Lenses (49% vs. 39%); and lower proportion of daily disposable Lenses (14% vs. 28%). There has been a continuous increase in Toric Lens prescribing between 1996 and 2011. The proportion of Toric Lens fits was positively related to the gross domestic product at purchasing power parity per capita for year 2011 (r = 0.21; P=0.004). CONCLUSIONS: At the present time, in the majority of countries surveyed, Toric soft Contact Lens prescribing falls short of that required to correct clinically significant astigmatism (≥ 0.75 diopters) in all Lens wearers.
-
soft Toric Contact Lens prescribing in different countries
Faculty of Health; Institute of Health and Biomedical Innovation, 2010Co-Authors: Nathan Efron, Eef Van Der Worp, Magne Helland, Motozumi Itoi, Deborah Jones, Jason J. Nichols, Craig A. WoodsAbstract:There have been significant improvements in Toric soft Contact Lens design over the past decade. Data from our international Contact Lens prescribing survey were mined to assess recent trends in Toric soft Contact Lens fitting. This survey was conducted by sending up to 1000 survey forms to Contact Lens fitters in Australia, Canada, Japan, the Netherlands, Norway, the UK and the USA each year between 2000 and 2009. Practitioners were asked to record data relating to the first 10 Contact Lens fits or refits performed after receiving the forms and to return them to us for analysis. The data revealed a gradual increase in the extent of Toric soft Lens fitting this century. Excluding Japan – which had a consistently low rate of soft Toric Lens fitting over the survey period – soft Toric Lenses now represent over 35% of all soft Lenses prescribed; it can be assumed that, on average (and again excluding Japan), all cases of astigmatism 0.75 D or less remains uncorrected among Contact Lens wearers. Toric Lenses are fitted more to those who are older, full-time wearers and reusable Lens wearers, and less to those wearing silicone hydrogel and extended wear Lenses.
Woods Craig - One of the best experts on this subject based on the ideXlab platform.
-
An international survey of Toric Contact Lens prescribing
'Ovid Technologies (Wolters Kluwer Health)', 2013Co-Authors: Morgan, Philip B., Efron Nathan, Woods CraigAbstract:To characterize Toric Contact Lens prescribing worldwide. Up to 1,000 survey forms were sent to Contact Lens fitters in up to 39 countries between January and March every year for 5 consecutive years (2007–2011). Practitioners were asked to record data relating to the first 10 Contact Lens fits or refits performed after receiving the survey form. Only data for Toric and spherical soft Lens fits were analyzed. Survey data collected since 1996 were also analyzed for 7 nations to assess Toric Lens fitting trends since that time. Data were collected in relation to 21,150 Toric fits (25%) and 62,150 spherical fits (75%). Toric prescribing ranged from 6% of Lenses in Russia to 48% in Portugal. Compared with spherical fittings, Toric fittings can be characterized as follows: older age (29.8 ± 11.4 years vs. 27.6 ± 10.8 years for spherical Lenses); men are overrepresented (38% vs. 34%); greater proportion of new fits (39% vs. 32%); use of silicone hydrogel Lenses (49% vs. 39%); and lower proportion of daily disposable Lenses (14% vs. 28%). There has been a continuous increase in Toric Lens prescribing between 1996 and 2011. The proportion of Toric Lens fits was positively related to the gross domestic product at purchasing power parity per capita for year 2011 (r2 = 0.21; P=0.004). At the present time, in the majority of countries surveyed, Toric soft Contact Lens prescribing falls short of that required to correct clinically significant astigmatism (≥0.75 diopters) in all Lens wearers