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Journal of Refractive Surgery... Jun 2021Presbyopia is the consequence of the slow and progressive universal decline in the amplitude of accommodation with age, and it will eventually affect everyone. This...
Presbyopia is the consequence of the slow and progressive universal decline in the amplitude of accommodation with age, and it will eventually affect everyone. This article discusses the disease state of presbyopia and describes the classifications of its progression. .
Topics: Accommodation, Ocular; Humans; Presbyopia
PubMed: 34170763
DOI: 10.3928/1081597X-20210408-05 -
Indian Journal of Ophthalmology Dec 2017Modern day cataract surgery is evolving from a visual restorative to a refractive procedure. The advent of multifocal intraocular lenses (MFIOLs) allows greater... (Review)
Review
Modern day cataract surgery is evolving from a visual restorative to a refractive procedure. The advent of multifocal intraocular lenses (MFIOLs) allows greater spectacle independence and increased quality of life postoperatively. Since the inception in 1980s, MFIOLs have undergone various technical advancements including trifocal and extended depth of vision implants more recently. A thorough preoperative workup including the patients' visual needs and inherent ocular anatomy allows us to achieve superior outcomes. This review offers a comprehensive overview of the various types of MFIOLs and principles of optimizing outcomes through a comprehensive preoperative screening and management of postoperative complications.
Topics: Cataract Extraction; Humans; Multifocal Intraocular Lenses; Patient Satisfaction; Presbyopia; Prosthesis Design; Quality of Life; Visual Acuity
PubMed: 29208809
DOI: 10.4103/ijo.IJO_1072_17 -
PloS One 2021The aim of this cohort study was to evaluate the development and progression of presbyopia and the status of dry eye-related symptoms from 2017 to 2020, to assess the...
PURPOSE
The aim of this cohort study was to evaluate the development and progression of presbyopia and the status of dry eye-related symptoms from 2017 to 2020, to assess the impact of the COVID-19 pandemic.
METHODS
Near add power at 30 cm was measured in 339 participants aged between 40 and 55 from 2017 to 2021 at Japanese eye clinics. Regression analysis of near add power and age was analyzed to compare 2017 with later years up to the pandemic. The prevalence of dry eye-related signs and six common symptoms were compared.
RESULTS
The number and mean age (y) of participants were 183 (48.6±4.1) in 2017, 46 (51.3±7.5) in 2019, and 110 (49.2±3.7) in 2020-21, respectively. The mean progression rate of near add power (D/y) was 0.13 for 2017, 0.09 for 2019 (P = 0.028, vs 2017), and 0.08 for 2020-21 (P<0.001, vs 2017). The slope (rate of presbyopia progression) became flatter from 2017 to 2021 and the estimated near add power at the age of 40 increased from 2017 to 2020-2021, implicating presbyopia developed earlier and worsened during the study period. The 2017 values were comparable with previous studies described in 1922 and 2019. The standardized correlation coefficient between age and near add power was 0.816 for 2017, 0.671 for 2019 (P = 0.084, vs 2017), and 0.572 for 2020-21 (P<0.001, vs 2017). Multiple regression analysis revealed age and COVID-19 pandemic were significantly correlated with near add power. The prevalence of dryness irritation, and pain was greater in 2020-21 than in 2017 with no difference in the prevalence of eye fatigue, blurring, and photophobia. There was no difference in the prevalence of short tear break-up time and positive corneal staining among 2017, 2019 and 2020-21.
CONCLUSION
Estimated presbyopia developed earlier and progressed slower from 2017 to 2021, the COVID-19 pandemic. Stress and rapid digitalization related to strict infection control and quarantine might be contributing factors.
Topics: Adult; COVID-19; Cohort Studies; Dry Eye Syndromes; Female; Humans; Japan; Male; Middle Aged; Pandemics; Presbyopia; Refraction, Ocular; SARS-CoV-2; Visual Acuity
PubMed: 34762654
DOI: 10.1371/journal.pone.0259142 -
Journal of Refractive Surgery... Oct 2018To provide an overview of the efficacy and safety of available presbyopic excimer laser ablation profiles. (Review)
Review
PURPOSE
To provide an overview of the efficacy and safety of available presbyopic excimer laser ablation profiles.
METHODS
Literature review.
RESULTS
Monovision with excimer laser traditionally applies near correction to the non-dominant eye. Different excimer laser presbyopic approaches include the increase in depth of focus, through the controlled change of spherical aberration or asphericity, or multifocal ablation patterns with central or peripheral near vision zones. The studies investigating different excimer laser ablation patterns applied in previously myopic eyes revealed high levels of efficacy with all ablation profiles (between 68% and 99% achieving binocular uncorrected distance visual acuity [UDVA] of 20/25 or better, and between 70% and 100% achieving uncorrected near visual acuity [UNVA] presenting J3 or better). In hypermetropic eyes, most of the studies revealed high levels of efficacy with different platforms (between 78% and 100% achieving binocular UDVA of 20/25 or better and between 70% and 100% achieving UNVA presenting J3 or better). Loss of two or more lines of corrected distance visual acuity varied between 0% and 10% in the myopic eyes and between 0% and 14% in the hyperopic eyes.
CONCLUSIONS
There is evidence that excimer laser presbyopic strategies accomplish spectacle independence at reasonable levels. There are reliable and safe options for both myopic and hyperopic eyes with satisfactory outcomes regarding near and distance vision. [J Refract Surg. 2018;34(10):698-710.].
Topics: Humans; Keratomileusis, Laser In Situ; Lasers, Excimer; Presbyopia; Refraction, Ocular; Vision, Binocular; Visual Acuity
PubMed: 30296331
DOI: 10.3928/1081597X-20180726-02 -
Der Ophthalmologe : Zeitschrift Der... Aug 2018The biomechanics of accommodation are of particular interest in terms of the causes of presbyopia and the function of intraocular lenses. (Review)
Review
BACKGROUND
The biomechanics of accommodation are of particular interest in terms of the causes of presbyopia and the function of intraocular lenses.
OBJECTIVE
The aim of the present article is to model the mechanism of accommodation in detail.
MATERIALS AND METHODS
The state of the art of applying biomechanical models to accommodation is presented, which enables the accommodation process to be understood.
RESULTS AND CONCLUSION
The established models, which are based on the Helmholtz theory, can explain the accommodation process in a plausible manner. These models thereby also enable further investigations on the genesis of presbyopia as well as on the development of accommodative intraocular lenses and implants. However, measurements are always necessary to compare the simulation results with reality, and to provide input and material data as well as geometric dimensions of components of the eye.
Topics: Accommodation, Ocular; Humans; Lens, Crystalline; Lenses, Intraocular; Presbyopia
PubMed: 29404678
DOI: 10.1007/s00347-018-0661-9 -
International Ophthalmology Feb 2022To review all case series of refractive corneal inlay implantation: Flexivue (Presbia, Netherlands), Invue (BioVision, Brügg, Switzerland) and Icolens (Neoptics,... (Review)
Review
PURPOSE
To review all case series of refractive corneal inlay implantation: Flexivue (Presbia, Netherlands), Invue (BioVision, Brügg, Switzerland) and Icolens (Neoptics, Hünenberg, Switzerland) performed in presbyopia patients and to evaluate the reported visual outcomes. In addition, our aim is to provide assessment for complications and to report the satisfaction rates.
METHODS
PubMed, Web of Science and Scopus databases were consulted using "refractive corneal inlay", "Flexivue Inlay", "Invue Inlay" and "Icolens inlay" as keywords. 147 articles were found, and they were assessed considering the inclusion and exclusion criteria. After filtering, this systemic review included ten articles, published between 2011 and 2020.
RESULTS
308 eyes from 308 participants were enrolled in this systematic review. Mean maximum follow-up was 13.9 months. Nine of the ten case series included used femtosecond laser for the corneal pocket creation. Mean pocket depth was 293.75 µm. 77.5% of the eyes reported a postoperative uncorrected near visual acuity of 20/32 or better, and 19.20% of the inlay-implanted eyes achieved an uncorrected distance visual acuity of 20/20 or better. The most prominent complications were halos, pain, photophobia, and poor distance visual acuity. 27 eyes (8.7%) had to be explanted due to complications, such as near-distance spectacle dependence or blurred distance vision.
CONCLUSION
Refractive corneal inlay outcomes demonstrated high efficacy, safety, and satisfaction rates. Furthermore, it is a reversible technique. However, the findings must be viewed with caution due potential conflict of interest. Further research with higher sample size is needed to validate these findings.
Topics: Corneal Stroma; Corneal Topography; Eye, Artificial; Humans; Presbyopia; Prospective Studies; Prostheses and Implants; Prosthesis Implantation; Refraction, Ocular
PubMed: 34599717
DOI: 10.1007/s10792-021-02024-4 -
Current Opinion in Ophthalmology Jul 2015The aim of this review is to offer a comprehensive overview of the different PresbyLASIK approaches, which have been published in peer-reviewed journals. (Review)
Review
PURPOSE OF REVIEW
The aim of this review is to offer a comprehensive overview of the different PresbyLASIK approaches, which have been published in peer-reviewed journals.
RECENT FINDINGS
Comprehensive search was conducted in scopus using keywords presbyLASIK, presbyopia, LASIK, corneal multifocality. We reviewed binocular uncorrected and corrected distance and near visual acuity, and loss of lines of best corrected visual acuity, for presbyopic patients among three different basic treatment modalities.
SUMMARY
Additional trials and standards for reporting results for presbyopic approaches are necessary. Careful patient selection and counseling is imperative in all PresbyLASIK treatments.
Topics: Cornea; Humans; Keratomileusis, Laser In Situ; Lasers, Excimer; Presbyopia; Treatment Outcome; Visual Acuity
PubMed: 26058023
DOI: 10.1097/ICU.0000000000000162 -
Diabetic Medicine : a Journal of the... Apr 2017Diabetic retinopathy is the most common cause of vision loss in people with diabetes mellitus; however, other causes of visual impairment/loss include other retinal and... (Review)
Review
Diabetic retinopathy is the most common cause of vision loss in people with diabetes mellitus; however, other causes of visual impairment/loss include other retinal and non-retinal visual problems, including glaucoma, age-related macular degeneration, non-arteritic anterior ischaemic optic neuropathy and cataracts. Additionally, when a person with diabetes complains of visual disturbance despite a visual acuity of 6/6, abnormalities in refraction, contrast sensitivity, straylight and amplitude of accommodation should be considered. We review and highlight these visual problems for physicians who manage people with diabetes to ensure timely referral and treatment to limit visual disability, which can have a significant impact on daily living, especially for those participating in sports and driving.
Topics: Cataract; Contrast Sensitivity; Diabetes Complications; Diabetes Mellitus; Diabetic Retinopathy; Glaucoma; Humans; Macular Degeneration; Presbyopia; Refractive Errors; Vision Disorders
PubMed: 27917530
DOI: 10.1111/dme.13296 -
IEEE Transactions on Bio-medical... Jan 2022Presbyopia, an age-related ocular disorder, is characterized by the loss in the accommodative abilities of the human eye. Conventional methods of correcting presbyopia...
OBJECTIVE
Presbyopia, an age-related ocular disorder, is characterized by the loss in the accommodative abilities of the human eye. Conventional methods of correcting presbyopia divide the field of view, thereby resulting in significant vision impairment. We demonstrate the design, assembly and evaluation of autofocusing eyeglasses for restoration of accommodation without dividing the field of view.
METHODS
The adaptive optics eyeglasses comprise of two variable-focus liquid lenses, a time-of-flight range sensor and low-power, dual microprocessor control electronics, housed within an ergonomic frame. Subject-specific accommodation deficiency models were utilized to demonstrate high-fidelity accommodative correction. The abilities of this system to reduce accommodation deficiency, its power consumption, response time, optical performance and MTF were evaluated.
RESULTS
Average corrected accommodation deficiencies for 5 subjects ranged from -0.021 D to 0.016 D. Each accommodation correction calculation was performed in ∼67 ms which consumed 4.86 mJ of energy. The optical resolution of the system was 10.5 cycles/degree, and featured a restorative accommodative range of 4.3 D. This system was capable of running for up to 19 hours between charge cycles and weighed ∼132 g.
CONCLUSION
The design, assembly and performance of an autofocusing eyeglasses system to restore accommodation in presbyopes has been demonstrated.
SIGNIFICANCE
The new autofocusing eyeglasses system presented in this article has the potential to restore pre-presbyopic levels of accommodation in subjects diagnosed with presbyopia.
Topics: Accommodation, Ocular; Eyeglasses; Humans; Optics and Photonics; Presbyopia; Visual Acuity
PubMed: 34232861
DOI: 10.1109/TBME.2021.3094964 -
Acta Ophthalmologica Sep 2014To examine the public health impact of presbyopia regarding its effect on quality of life (QoL) and society in both the developed and developing worlds. (Comparative Study)
Comparative Study Review
PURPOSE
To examine the public health impact of presbyopia regarding its effect on quality of life (QoL) and society in both the developed and developing worlds.
METHODS
A database was created from articles found on PubMed, the Cochrane Library and Science Direct using the following search terms: presbyopia, QoL, accommodation, impact, cost, prevention, treatment and public health. Articles were accepted into the database if they addressed presbyopia and public health.
RESULTS
This study showed in the developed world presbyopic subjects treated with reading glasses suffered a reduction in QoL parameters compared with those who were younger and emmetropic. A small minority of subjects were assessed to be a candidate for additional non-spectacle treatment measures. In undeveloped areas, the manifestations of presbyopia were similar to the developed world in symptoms, age and reduced QoL. However, there was inadequate treatment of this condition, even with reading glasses. The availability of reading glasses ranged from 6 to 45%. Activities of daily living could not be accomplished as easily without near correction of reading. Reasons described for the lack of correction included: lack of access to medical care, poor awareness of decreased near vision, lack of motivation and cost. Overall scant data exist regarding presbyopia and its impact and how treatment affects QoL.
CONCLUSIONS
This review suggests that the effect of presbyopia and its treatments on QoL remain poorly described and incompletely treated, especially in developing areas of the world.
Topics: Activities of Daily Living; Developed Countries; Developing Countries; Eyeglasses; Humans; Presbyopia; Public Health; Quality of Life
PubMed: 24910300
DOI: 10.1111/aos.12308