Contact Lenses and the Older Adult

Bennett, Edward S.; Weissman, Barry A.; Remba, Melvin J.

doi:10.1016/b978-0-7506-7359-4.50017-5

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…The practitioner needs to be empathetic to the fact that this individual has never experienced and may be apprehensive about adaptation to lens wear. In addition, patients have to adapt to the multiple imagery of bifocal/multifocal contact lenses or the blur resulting from monovision and to be able to exhibit mastery of lens care and handling 21 . The latter factor is especially important to assess during the preliminary evaluation.…”

Section: Consultationmentioning

confidence: 99%

Contact lens correction of presbyopia

Bennett

2008

Clinical and Experimental Optometry

114

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The contact lens wearing presbyopic population is underserved worldwide. There are several available options, including single vision contact lenses and spectacle overcorrection for near, monovision, rigid gas permeable (GP) multifocal and bifocal lens designs and soft bifocal lens designs. This paper presents an overview of the latest research and clinical experience as it pertains to these forms of correction. Recent comparative studies concluded that contact lens multifocals perform better in many different forms of visual measurements, in some cases performing similar to best spectacle correction, than monovision wearers. The future appears to be very promising for multifocal GP and soft lens modalities.

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Section: Consultationmentioning

confidence: 99%

Contact lens correction of presbyopia

Bennett

2008

Clinical and Experimental Optometry

114

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“…An intraocular lens is the ideal optical correction and is preferable if there are no contraindications (although visual acuity may be equal in spectacles, contact lenses and intraocular implant, the retinal image is enlarged considerably in spectacle corrections 20 to 30 percent, moderately in contact lens correction 6 to 7 percent, and minimally in an intraocular lens about 1 percent [4,9,10].…”

Section: Introductionmentioning

confidence: 99%

Biometric Measurements: Average Intra-Ocular Lens Power for Sudanese Patients with Senile Cataract

Elawad¹,

Elawad²

2015

Optics

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Abstract:The aim of the study is to determine the average intra-ocular lens power (IOL) for Sudanese patients with senile cataract. To contribute towards cataract treatment in Sudan and blindness prevention the goal of VISION 2020: The Right to Sight. Methods: Descriptive, cross-sectional, hospital based study was conducted in Makkah Eye Complex in Khartoum Alryad; in the period (October 2009-July 2010. Elderly patients (300); their age varied 60-95 years with senile cataract were asked to participate in the study. Participation was entirely voluntary. Information was collected by means of interview, clinical assessment and ocular measurements. The data were analyzed using SPAW Statistics-18 (2010) a modified version of SPSS. Results: The average horizontal corneal power (K1) for right eye (RE) 42.70D (SD ±1.625) and left eye (LE) 43.59D (SD±1.879).The average vertical corneal power (K2) for RE 43.97D (SD ±1.710) and left LE 44.85D (SD ±1.919). The average axial length is 23.72mm (SD ±1.143) and 23.16mm (SD ±0.939) for the RE and LE respectively. The average IOL power for Extra-capsular cataract extraction (ECCE); with IOL to be implanted in the posterior chamber (PCIOL) was calculated to be 20.03D (SD ±1.409) for the RE and 20.19D (SD ±2.639) for the LE. However, for Phacoemulsification (Phaco) the IOL power is calculated to be 20.06D (SD ±1.740) and 21.17D (SD ±1.658) for the RE and LE respectively. Conclusions: The average corneal power was found be (42-45D), axial length (23-24mm), where as the IOL power (20-21D); similar to international standards. In this study the biometric measurements were considered pre-operatively for all patients studied. Changes in biometric measurements after cataract extraction were not investigated since it wasn't part of the research objective; however, further studies are recommended to determine the influence of cataract extraction in corneal power, curvature, thickness, depth of anterior chamber and axial length.

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Contact Lenses and the Older Adult

Cited by 2 publications

References 38 publications

Contact lens correction of presbyopia

Contact lens correction of presbyopia

Biometric Measurements: Average Intra-Ocular Lens Power for Sudanese Patients with Senile Cataract

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