Significant Improvement in Dynamic Visual Acuity after Cataract Surgery: A Promising Potential Parameter for Functional Vision

Ao, Mingxin; Li, Xuemin; Huang, Chen; Hou, Zhiqiang; Qiu, Weiqiang; Wang, Wei
December 2014
PLoS ONE;Dec2014, Vol. 9 Issue 12, p1
Academic Journal
Purpose: Dynamic visual acuity (DVA) is a relatively independent parameter for evaluating the ability to distinguish details of a moving target. The present study has been designed to discuss the extent to which age-related cataract impacts DVA in elderly individuals and to determine whether it could be restored after bilateral phacoemulsification combined with intraocular lens implantation surgery. Methods: Twenty-six elderly cataract patients scheduled for binocular cataract surgery and 30 elderly volunteers without cataract were enrolled in the study. DVA at 15, 30, 60 and 90 degree per second (dps) was assessed, and velocity-dependent visual acuity decreases between consecutive speed levels were calculated. Results: Compared with the control group, the patient group exhibited significantly worse DVA performance at all speed levels (p<0.001), and the decreases in velocity-dependent visual acuity were more serious in the patient group at the intervals of 0–15 dps (p<0.001), 15–30 dps (p = 0.007) and 30–60 dps (p = 0.008). Postoperatively, DVA performance at every speed level in the patient group clearly improved (p<0.001) and recovered to levels compatible to the control group. The decrease in visual acuity with increasing speed was less pronounced than during the preoperative phase (p0–15 dps = 0.001, p15–30 dps<0.001 and p30–60 dps = 0.001) and became similar to that of the control group. The postoperative visual benefit regarding DVA was more pronounced than the improvement in static visual acuity (p15 dps = 0.001 and p<0.001 at 30 dps, 60 dps and 90 dps). Conclusions: The impact of age-related cataract on DVA was more severe than its effects on static visual acuity. After cataract surgery, not only static vision of the patients was restored markedly, but also the dynamic vision. DVA could be an important adjunct to the current evaluation system of functional vision, thereby meriting additional attention in clinical assessment.


Related Articles

  • Transition to Phacoemulsification at the Farabi Eye Hospital, Iran. Hashemi, Hassan; Mohammadi, S.-Farzad; Mazouri, Arash; Majdi-N., Mercede; Jabbarvand, Mahmoud; Z.-Mehrjardi, Hadi // Middle East African Journal of Ophthalmology;Apr-Jun2011, Vol. 18 Issue 2, p173 

    Purpose: To provide objective evidence on the transition of cataract surgical care at Farabi Eye Hospital, Iran. Materials and Methods: Two separate years, 2003 and 2006, were selected for evaluation. One thousand nine hundred fifty-seven surgical records of age-related cataract cases were...

  • Visual Performance of Tecnis ZM900 Diffractive Multifocal IOL after 2500 Implants: A 3-Year Followup. Akaishi, Leonardo; Vaz, Rodrigo; Vilella, Graziela; Garcez, Rodrigo C.; Tzelikis, Patrick F. // Journal of Ophthalmology;2010, p1 

    Purpose. To evaluate visual performance for near, intermediate, and distant vision; complaints of photic phenomena, and patient satisfaction with the new diffractive multifocal IOL used in eyes which underwent phacoemulsification. Methods. Two thousand and five hundred consecutive eyes...

  • Long-term results of sealed capsule irrigation using distilled water to prevent posterior capsule opacification: a prospective clinical randomised trial. Rabsilber, Tanja M.; Limberger, Il-Joo; Reuland, Andreas J.; Holzer, Mike P.; Auffarth, Gerd U. // British Journal of Ophthalmology;Jul2007, Vol. 91 Issue 7, p912 

    Background: We investigated long-term safety and efficacy of sealed capsule irrigation (SCI) during cataract surgery to prevent posterior capsule opacification (PCO). Methods: One eye of each of 17 patients (mean age: 70.1 ± 9.7 years) who presented with bilateral cataracts was randomly...

  • Blue Light Filtering Intraocular Lenses in Phacoemulsification Cataract Surgery. Baričić, Ante; Dekaris, Iva; Gabrić, Nikica; Bosnar, Damir; Lazić, Ratimir; Martinović, Željka Karaman; Krstonijević, Edita Kondža // Collegium Antropologicum;2007 Supplement 1, Vol. 31 Issue s1, p57 

    Blue light can damage retina and cause age related macular degeneration. After cataract surgery and lens removal retina stays unprotected. Blue light filtering intraocular lenses (IOL) increase protection of the retina. In our prospective study we investigated clinical results after billateral...

  • Torsional ultrasound modality for hard nucleus phacoemulsification cataract extraction. Zeng, M.; Liu, X.; Liu, Y.; Xia, Y.; Luo, L.; Yuan, Z.; Zeng, Y. // British Journal of Ophthalmology;Aug2008, Vol. 92 Issue 8, p1092 

    Aim: To evaluate the efficacy and safety of phacoemulsification using torsional modality with different parameter settings for hard nucleus cataract extraction. Design: A prospective, randomised clinical study. Methods: A clinical practice study conducted at the Cataract Service, Zhongshan...

  • Bilateral Sorunsuz Katarakt Cerrahisinden Sonra Tek Taraflı Ä°ntraoküler Lens Mikrovakuolizasyonu. HALİLİ, Elvin; YILDIZ, Hatice Elvin; TURAN VURAL, Ece; NOHUTÇU, Ahmet Fazıl // Glokom-Katarakt/Journal of Glaucoma-Cataract;Sep2013, Vol. 8 Issue 3, p209 

    A Sixty two-year-old diabetic male patient applied to our clinic with a complaint of decreased vision in the right eye. On examination, visual acuity was 5/10 in the right eye and 8/10 in the left eye. Patient's medical records showed an uncomplicated phacoemulsification surgery and hydrophobic...

  • Intracapsular dexamethasone implant in patients undergoing phacoemulsification and intraocular lens implantation. Vianna, Lucas Monferrari Monteiro; Freitas, Lincoln Leme; Nosé, Walton; Kanecadan, Liliane Andrade Almeida; Soriano, Eduardo Sone; Muccioli, Cristina; Belfort Jr., Rubens // Arquivos Brasileiros de Oftalmologia;Jul/Aug2013, Vol. 76 Issue 4, p226 

    Purpose: To relate the outcomes of 7 eyes of 7 patients in which a dexamethasone 0.7 mg implant (Ozurdex®) was placed inside the capsule bag after phacoemulsification and intraocular lens (IOL) implantation and compare with the fellow eyes, that were operated by the same technique and...

  • Pacientes com astigmatismo submetidos à cirurgia de catarata: LIO tórica x LIO asférica? de Almeida Torres Netto, Emilio; Gulin, Marina Carvalho; Zapparoli, Marcio; Moreira, Hamilton // Arquivos Brasileiros de Oftalmologia;Jul/Aug2013, Vol. 76 Issue 4, p233 

    Purposes: Compare the visual acuity of patients who underwent cataract surgery by phacoemulsification with IOL AcrySof® toric implantation versus AcrySof® IQ and evaluate the reduction of cylindrical diopters (CD) in the postoperative period. Methods: Analytical and retrospective study of...

  • Arka Polar Katarakt Cerrahisi. Ekıncı, Bengü; Aslan, Bekir Sıtkı; Duman, Sunay // Glokom-Katarakt/Journal of Glaucoma-Cataract;Jun2007, Vol. 2 Issue 2, p107 

    Purpose: To evaluate the surgical technique and parameters affecting the success of posterior polar cataract surgery. Materials and Methods: This prospective study comprised of 23 eyes of 12 patients, who have been diagnosed as posterior polar cataract and have undergone cataract surgery under...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics