X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Online Resource
    Online Resource
    Evaluation of contrast acuity and defocus curve in bifocal and monofocal intraocular lenses
    Ovid Technologies (Wolters Kluwer Health) ; 1993
    In:  Journal of Cataract and Refractive Surgery Vol. 19, No. 4 ( 1993-07), p. 513-523
    Details
    In: Journal of Cataract and Refractive Surgery, Ovid Technologies (Wolters Kluwer Health), Vol. 19, No. 4 ( 1993-07), p. 513-523
    Type of Medium: Online Resource
    ISSN: 0886-3350
    URL: Article
    DOI: 10.1016/S0886-3350(13)80616-5
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 1993
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 2
    Online Resource
    Online Resource
    Intraocular pressure changes and corneal biomechanics after hyperopic small-incision lenticule extraction
    Springer Science and Business Media LLC ; 2020
    In:  BMC Ophthalmology Vol. 20, No. 1 ( 2020-12)
    Details
    In: BMC Ophthalmology, Springer Science and Business Media LLC, Vol. 20, No. 1 ( 2020-12)
    Abstract: We aimed to compare the intraocular pressure (IOP) measurements by a dynamic Scheimpflug analyzer (Corvis ST), a non-contact tonometer, and an ocular response analyzer after hyperopic small-incision lenticule extraction (SMILE). Methods Thirteen patients who underwent hyperopic SMILE in one eye were enrolled prospectively. IOP and corneal biomechanical parameters were measured preoperatively and at 1 week, 1 month, and 3 months postoperatively with a non-contact tonometer (IOP NCT ), Corvis ST (biomechanical corrected IOP [bIOP]), and ocular response analyzer (Goldmann-correlated intraocular pressure [IOPg] and cornea compensated IOP [IOPcc]). A linear mixed model was used to compare the IOPs and biomechanical values among methods at each time point. Results IOP NCT , IOPg, and IOPcc dropped significantly after surgery, with the amplitude being 3.15 ± 0.48 mmHg, 5.49 ± 0.94 mmHg, and 4.34 ± 0.97 mmHg, respectively, at the last follow-up visit. IOP NCT decreased by 0.11 ± 0.06 mmHg per μm of excised central corneal thickness. bIOP did not change significantly after surgery. Preoperatively, no difference was found among the four measurements ( P   〉  0.05). Postoperatively, IOP NCT and bIOP were higher than IOPg and IOPcc. bIOP was independent of cornea thickness at last follow-up visit, whereas it correlated significantly with corneal biomechanics similar to the other three IOP values. Conclusion bIOP is a relative accurate measure of IOP after hyperopic SMILE.
    Type of Medium: Online Resource
    ISSN: 1471-2415
    URL: Article
    DOI: 10.1186/s12886-020-01384-2
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 2050436-6
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 3
    Online Resource
    Online Resource
    Subjective Outcomes After Bilateral Implantation of an Apodized Diffractive +3.0 D Multifocal Toric IOL in a Prospective Clinical Study
    SLACK, Inc. ; 2013
    In:  Journal of Refractive Surgery Vol. 29, No. 11 ( 2013-11), p. 762-767
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 29, No. 11 ( 2013-11), p. 762-767
    Abstract: To assess subjective outcomes after bilateral implantation of an aspheric apodized diffractive +3.0 diopter (D) multifocal toric intraocular lens (IOL). METHODS: This was a prospective, single-arm, 6-month study conducted at five study sites in Europe and South America. Forty-nine patients requiring bilateral cataract extraction or refractive lens exchange and IOL implantation in both eyes with preoperative regular corneal astigmatism of 0.75 D or greater and 2.5 D or less received bilateral AcrySof ReSTOR +3.0 D toric IOLs (Models SND1T3, SND1T4, or SND1T5; Alcon Laboratories, Inc., Fort Worth, TX). Subjective questionnaires were administered preoperatively and 6 months postoperatively. RESULTS: Patient subjective experience with visual tasks at all distances improved from the preoperative visit to the 6-month visit. At the 6-month visit, 90% (36 of 40) of respondents reported complete freedom from corrective wear compared with 14% (6 of 43) pre-operatively. On a scale of 0 (worst) to 10 (best), the mean score that patients rated their uncorrected vision was 7.9 ± 1.9 at 6 months (n = 37) compared with 3.6 ± 2.0 at the preoperative visit (n = 38). CONCLUSIONS: Six months following bilateral implantation of the AcrySof ReSTOR +3.0 D toric IOL revealed improved subjective experience, increased spectacle freedom, and higher satisfaction when compared with the preoperative baseline. [ J Refract Surg. 2013;29(11):762–767.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20131021-06
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2013
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 4
    Online Resource
    Online Resource
    Removability of a Small Aperture Intracorneal Inlay for Presbyopia Correction
    SLACK, Inc. ; 2013
    In:  Journal of Refractive Surgery Vol. 29, No. 8 ( 2013-08), p. 550-556
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 29, No. 8 ( 2013-08), p. 550-556
    Abstract: To evaluate the safety of the corneal inlay removal procedure and the reversibility of visual acuities, corneal topography, and corneal biomicroscopy changes in a series of cases. METHODS: Ten cases implanted with one of three versions of the AcuFocus Kamra Inlay (ACI 7000, 7000T, and 7000PDT; AcuFocus, Inc., Irvine, CA) were followed for a minimum of 6 months after corneal inlay removal. RESULTS: The reason for removal was related to subjective dissatisfaction with visual symptoms (8 of 10 patients) such as night glare, photophobia, starburst, blurry vision, and halos. One case of removal was related to inadvertent thin flap and the final case was related to insufficient near vision. Mean uncorrected distance visual acuity (UDVA) and uncorrected near visual acuity (UNVA) was 0 ± 0.1 logMAR (Snellen 20/20) and 0.5 ± 0.2 logMAR (Snellen 20/40), respectively, preoperatively and 0.1 ± 0.1 logMAR (Snellen 20/25) and 0.5 ± 0.1 logMAR (Snellen 20/63), respectively, 6 months after corneal inlay removal. Mean corrected distance visual acuity (CDVA) and corrected near visual acuity (CNVA) was 0 ± 0.1 logMAR (Snellen 20/20) and 0 ± 0.1 logMAR (Snellen 20/20), respectively, preoperatively and 0 ± 0.1 logMAR (Snellen 20/20) and 0.1 ± 0.1 logMAR (Snellen 20/25), respectively, 6 months after corneal inlay removal. Mean root mean square (RMS) higher-order aberration (HOA) was 0.50 ± 0.12 (range: 0.30 to 0.70) preoperatively and 0.69 ± 0.14 (range: 0.48 to 0.95) 6 months after corneal inlay removal ( P 〈 .8). Weak positive correlation was found between Δt Implant-Removal (Δt I-R), RMS spherical, coma, and HOA at 6 months (Δt I-R vs RMS spherical was r = 0.2, r 2 = 0.5, P 〈 .7; Δt I-R vs RMS coma was r = 0.8, r 2 = 0.6, P 〈 .3; and Δt I-R vs HOA r = 0.8; r 2 = 0.6, P 〈 .9). CONCLUSION: This study suggests that after removal of the corneal inlay, corneal topography and corneal aberrometry are not permanently affected. In more than 60% of patients, CNVA, CDVA, UNVA, and UDVA were similar to the preoperative value. [ J Refract Surg. 2013;29(8):550–556.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20130719-05
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2013
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 5
    Online Resource
    Online Resource
    Laser Refractive Cataract Surgery With a Femtosecond Laser After Penetrating Keratoplasty: Case Report
    SLACK, Inc. ; 2013
    In:  Journal of Refractive Surgery Vol. 29, No. 1 ( 2013-01), p. 8-8
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 29, No. 1 ( 2013-01), p. 8-8
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20121228-01
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2013
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 6
    Online Resource
    Online Resource
    Development of the Continuous Curvilinear Lenticulerrhexis Technique for Small Incision Lenticule Extraction
    SLACK, Inc. ; 2015
    In:  Journal of Refractive Surgery Vol. 31, No. 1 ( 2015-01), p. 16-21
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 31, No. 1 ( 2015-01), p. 16-21
    Abstract: To develop and evaluate the new continuous curvilinear lenticulerrhexis (CCL) technique for small incision lenticule extraction. METHODS: Thirty-one eyes of 20 patients with myopia were included in the study. The CCL technique for lenticule extraction was developed and used in 16 eyes of 10 patients (CCL group). The traditional technique of lenticule extraction was used in 15 eyes of 10 patients (traditional group). Uncorrected and corrected distance visual acuity, manifest refraction, lenticule quality, the duration of the extraction procedure, microdistorsions in Bowman’s layer under optical coherence tomography (Optovue OCT; Optovue, Inc., Fremont, CA), and adverse events were evaluated at 1 day and 1 month postoperatively. RESULTS: At the first postoperative month, all eyes in both groups had an uncorrected distance visual acuity of 1.0 or better. The safety indices were 1.12 and 1.09 for the CCL and traditional groups, respectively. The efficacy indices were 1.06 and 1.09 for the CCL and traditional groups, respectively. All lenticules in the CCL group had intact, round margins, whereas one lenticule in the traditional group had a microdefect margin. There was no statistically significant difference in duration of lenticule extraction or microdistorsions in Bowman’s layer. No eyes in the CCL group developed diffuse lamellar keratitis, as compared to one eye in the traditional group. CONCLUSIONS: The CCL technique exhibited excellent safety and efficacy for myopia correction, suggesting CCL is a promising technique that merits further development and study. [ J Refract Surg . 2015;31(1):16–21.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20141218-02
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2015
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 7
    Online Resource
    Online Resource
    Impact of Primary Calcification in Segmented Refractive Bifocal Intraocular Lenses on Optical Performance Including Straylight
    SLACK, Inc. ; 2020
    In:  Journal of Refractive Surgery Vol. 36, No. 1 ( 2020-01), p. 20-27
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 36, No. 1 ( 2020-01), p. 20-27
    Abstract: To describe and analyze the impact of calcification on the optical quality of segmented refractive bifocal intraocular lenses (IOLs). METHODS: Eight segmented refractive bifocal IOLs made of hydrophilic acrylic were explanted from 8 patients due to opacification (and one opacified IOL that was not explanted) and analyzed in a cross-sectional study with laboratory analysis. Nine cases comprised three IOL models: LS-313 MF30 (5 cases), LS-312 MF30 (3 cases), and LS-313 MF15 (1 case). Material analysis with scanning and transmission electron microscopy confirmed IOL calcification. Measurements of modulation transfer function (MTF) and straylight permitted assessment of the IOL optical quality. Values were compared to a control lens. RESULTS: Except for one case of Nd:YAG (neodymium:yttrium-aluminum-garnet) capsulotomy, there was no secondary surgical procedure in the patients' histories. Eight of nine patients reported deteriorated visual quality, ultimately requiring IOL exchange. Material evaluation revealed fine granules of a calcium phosphate. Despite calcification, all but one lens still showed two distinct foci on the MTF measurements. Straylight values were higher than in a cataractous lens (33.1 deg 2 /sr) in all cases, with an average value of 170.1 ± 71.5 deg 2 /sr. CONCLUSIONS: Optical quality assessment showed that IOL calcification had a small effect on the MTF of segmented refractive bifocal lenses but a large impact on the straylight levels. Accordingly, in the clinical case, straylight levels were elevated. [ J Refract Surg. 2020;36(1):20–27.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20191119-01
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2020
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 8
    Online Resource
    Online Resource
    Intraocular Lens Tilt and Decentration Measured By Scheimpflug Camera Following Manual or Femtosecond Laser–created Continuous Circular Capsulotomy
    SLACK, Inc. ; 2012
    In:  Journal of Refractive Surgery Vol. 28, No. 4 ( 2012-04), p. 259-263
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 28, No. 4 ( 2012-04), p. 259-263
    Abstract: To compare intraocular lens (IOL) decentration and tilt following a circular capsulotomy created with a femtosecond laser (laser CCC) to a manually performed continuous curvilinear capsulorrhexis (manual CCC). METHODS: In a prospective, randomized study, a laser CCC (Alcon LenSx Inc) was performed in 20 eyes from 20 patients and a manual CCC was performed in 25 eyes from 25 patients. Intraocular lens decentration and tilt were measured using a Scheimpflug camera (Pentacam, Oculus Optikgeräte GmbH) 1 year after surgery. Uncorrected (UDVA) and corrected distance visual acuity (CDVA) and manifest refraction were also determined postoperatively. Between-group differences of IOL decentration and tilt as well as the correlation between IOL decentration and postoperative refractive changes and between IOL tilt and visual acuity were analyzed. RESULTS: Horizontal and vertical tilt were significantly higher in the manual CCC group ( P =.007 and P 〈 .001, respectively). Lenses implanted after manual CCC showed greater horizontal and total decentration ( P =.034 and P =.022, respectively). Significant differences were found in the homogeneity of dichotomized IOL vertical tilt and both horizontal and total decentration distribution ( P =.008, P =.036, and P =.017, respectively). Total IOL decentration showed a significant correlation with changes in manifest refraction values between 1 month and 1 year after surgery (R=0.33, P =.032). A significant correlation was noted between IOL vertical tilt and CDVA (R 2 =0.17, β=−0.41, 95% confidence limit: −0.69 to −0.13, P =.005). CONCLUSIONS: Continuous curvilinear capsulorrhexis created with a femtosecond laser resulted in a more stable refractive result and less IOL tilt and decentration than manual CCC.
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20120309-01
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2012
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 9
    Online Resource
    Online Resource
    The Use of Femtosecond Lasers in Cataract Surgery: Review of the Published Results With the LenSx System
    SLACK, Inc. ; 2014
    In:  Journal of Refractive Surgery Vol. 30, No. 11 ( 2014-11), p. 730-740
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 30, No. 11 ( 2014-11), p. 730-740
    Abstract: To review the published literature describing the use of the LenSx femtosecond laser technology (Alcon Laboratories, Inc., Fort Worth, TX) in cataract surgery. METHODS: Literature review. RESULTS: The LenSx system has been used in more than 200,000 cataract surgery procedures to date. Pre-clinical evaluations have shown that this system produces accurate and reproducible capsulorhexes, and that both the energy required for phacoemulsification and total phacoemulsification time are less than with conventional phacoemulsification. In comparative studies, femtosecond lasers have been shown to produce more precise and reproducible capsulorhexes than manual procedures, and better intraocular lens placement; capsule overlap, circularity of capsulotomy, and centration of the intraocular lens are consistently better with femtosecond lasers than with manual procedures. The improved quality of capsulorhexis and intraocular lens positioning are reflected in favorable visual and refractive outcomes. As with any new technology, there is a significant learning curve: prospective cohort studies have shown that the incidence of intraoperative complications such as suction breaks or anterior capsular tears or tags decreases with experience. In general, the incidence of such complications is within the range ( 〈 2%) considered in recent evidence-based guidelines to be feasible and desirable. CONCLUSIONS: Although femtosecond laser cataract surgery is in its infancy, the technology is evolving rapidly and offers the potential for more consistent and predictable results after cataract surgery. [ J Refract Surg . 2014;30(11):730–740.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20141021-04
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2014
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
  • 10
    Online Resource
    Online Resource
    Comparison Between Bilateral Implantation of a Trifocal IOL and Mix-and-Match Implantation of a Bifocal IOL and an Extended Depth of Focus IOL
    SLACK, Inc. ; 2020
    In:  Journal of Refractive Surgery Vol. 36, No. 8 ( 2020-08), p. 528-535
    Details
    In: Journal of Refractive Surgery, SLACK, Inc., Vol. 36, No. 8 ( 2020-08), p. 528-535
    Abstract: To compare the clinical outcomes of mix-and-match implantation of a diffractive extended depth of focus intraocular lens (IOL) (TECNIS Symfony ZXR00; Johnson & Johnson Vision) and a diffractive bifocal IOL (TECNIS ZLB00 +3.25 diopters [D]; Johnson & Johnson Vision) and bilateral implantation of a diffractive trifocal IOL (AcrySof IQ PanOptix; Alcon Laboratories, Inc). METHODS: This prospective comparative study compares the clinical outcomes of patients with age-related cataract undergoing cataract surgery using the IOLs described. Patients were divided into the mix-and-match group and the trifocal group. Assessment included monocular and binocular uncorrected distance visual acuity (UDVA), intermediate visual acuity (UIVA at 60 cm), and near visual acuity (UNVA at 40 cm), uncorrected defocus curves, contrast sensitivity, and reading speed. Quality of vision was measured with the Visual Function Questionnaire (VFQ-25). RESULTS: A total of 50 patients (25 in each group) were enrolled. At 6 months postoperatively, outcomes of binocular UDVA, UIVA, and UNVA were similar in both groups. The binocular defocus curve only differed at vergences of −0.50 to −1.00 D (better for the mix-and-match group; P = .032 and .004, respectively) and at −4.00 D (better for the trifocal group; P = .001). Significantly higher reading speeds in the mix-and-match group were measured at 0.7 and 0.5 logMAR ( P = .038 and .034, respectively). There were no significant differences between groups for contrast sensitivity and the results of the questionnaire. CONCLUSIONS: The mix-and-match implantation seemed to be a good option for patients with high demands for distance and intermediate visual acuity, whereas the trifocal IOL appeared to be more suitable for patients with enhanced near vision demands. [ J Refract Surg . 2020;36(8):528–535.]
    Type of Medium: Online Resource
    ISSN: 1081-597X
    URL: Article
    DOI: 10.3928/1081597X-20200616-01
    Language: English
    Publisher: SLACK, Inc.
    Publication Date: 2020
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Online Resource
    Open Access Request
    Availability (electronic / print)
Nothing or not found what you are looking for? Please check your search query or use the Interlibrary Loan Search.
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages