Optimal Astigmatism to Enhance Depth of Focus after Cataract Surgery

Sawusch, Mark R.; Guyton, David L.

doi:10.1016/s0161-6420(91)32182-1

Cited by 63 publications

(36 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…18 Studies analyzing this phenomenon have compared it with phakic eyes, 2,3,12,13 without any comparative group, 1,4,6,7,[9][10][11]16,19 in an in vitro setup, 17 or as a single factor. 1,4-14 Therefore, we designed this study to evaluate more than 1 factor contributing to this phenomenon of pseudoaccommodation 4,5,6,13,[27][28][29][30] in the clinical scenario in which controls were also pseudophakic. The control group was also homogeneous with regard to the type of IOL implanted.…”

Section: Discussionmentioning

confidence: 99%

Analysis of patients with good uncorrected distance and near vision after monofocal intraocular lens implantation

Nanavaty

Vasavada

Patel

et al. 2006

Journal of Cataract and Refractive Surgery

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Analysis of patients with good uncorrected distance and near vision after monofocal intraocular lens implantation

Nanavaty

Vasavada

Patel

et al. 2006

Journal of Cataract and Refractive Surgery

View full text Add to dashboard Cite

show abstract

“…A prospective assessment of spectacle independence with patients in whom the refractive aims of monovision were successfully achieved found only 14% managed without glasses. 4 Myopic astigmatism inevitably limits distance acuity [5][6][7] which many surgeons would find unacceptable. A zoom principle accommodating IOL has been designed (BioComFold, Morcher, Stuttgart, Germany); unfortunately the anterior-posterior movement induced by accommodation is inadequate to produce the desired increase in effective power.…”

Section: Introductionmentioning

confidence: 99%

Prospective randomised double-masked trial of bilateral multifocal, bifocal or monofocal intraocular lenses

Leyland

Langan

Goolfee

et al. 2002

Eye

View full text Add to dashboard Cite

Aims To evaluate the functional effect of bilateral implantation of two different multifocal intraocular lenses (IOL) compared with the standard monofocal IOL. Methods Sixty-nine patients were recruited into a prospective, double-masked, randomised, controlled trial at a single hospital in the United Kingdom. Sixty completed follow-up; 16 implanted with monofocal IOLs, 29 with AMO 'ARRAY' multifocal IOLs and 15 with Storz 'TRUEVISTA' bifocal IOLs. Phacoemulsification and IOL implantation was performed to a standardised technique in both eyes within a 2-month period. The main outcome measures were distance and near visual acuity, depth of field and validated assessment of subjective function (TyPE questionnaire). Results Unaided distance acuity was good, and equivalent across the three groups. Corrected distance acuity was significantly lower in the bifocal group. Patients with multifocal and bifocal IOLs could read smaller absolute print size than those in the monofocal group (P = 0.05), but at a closer reading distance such that mean unaided near acuity was equal in the three groups. Corrected near acuity was significantly higher in the monofocal control group (P Ͻ 0.05). Depth of field was increased in multifocal (P = 0.06) and bifocal (P = 0.004) groups. Overall visual satisfaction was equal in the three groups, while near visual satisfaction was higher in the multifocal group than the monofocal (P = 0.04). Spectacle independence was not seen in the monofocal group, but was achieved in 28% of multifocal IOL patients and 33% of bifocal patients (P Ͻ 0.001). Adverse symptoms such as glare and haloes were significantly more bothersome with multifocal (not bifocal) IOLs than monofocals (P = 0.01). Conclusions Multifocal and bifocal IOLs improved unaided near vision performance, with around one in three patients becoming spectacle-independent. The main adverse effect was an increased incidence of subjective glare and haloes in the multifocal IOL group.

show abstract

“…[10][11][12][13] Studies show that slight myopia accompanied by a certain degree of astigmatism enhances the depth of focus in eyes with a monofocal IOL. [14][15][16][17] It is difficult, however, to produce the optimum degree of astigmatism after cataract surgery, whereas small-incision cataract surgery affects astigmatism only slightly. 18 The appropriate choice of IOL power with reference to preoperative astigmatism may thus be the most accurate method for obtaining optimum refraction.…”

mentioning

confidence: 99%

Optimum target refraction for highly and moderately myopic patients after monofocal intraocular lens implantation

Hayashi

2007

Journal of Cataract and Refractive Surgery

View full text Add to dashboard Cite

show abstract

Optimal Astigmatism to Enhance Depth of Focus after Cataract Surgery

Cited by 63 publications

References 14 publications

Analysis of patients with good uncorrected distance and near vision after monofocal intraocular lens implantation

Analysis of patients with good uncorrected distance and near vision after monofocal intraocular lens implantation

Prospective randomised double-masked trial of bilateral multifocal, bifocal or monofocal intraocular lenses

Optimum target refraction for highly and moderately myopic patients after monofocal intraocular lens implantation

Contact Info

Product

Resources

About