Measuring outcomes of cataract surgery using the Visual Function Index-14

Abstract

No author has a financial or proprietary interest in any material or method mentioned.

Long-term impact of dry eye symptoms on vision-related quality of life after phacoemulsification surgery

“…Increasingly, attention is being devoted to measuring VRQoL, and interest in outcomes research has grown from a recognition that patients are more interested in how interventions affect their well-being than in improvements in visual acuity [16]. The good news is that many studies have confirmed that VRQoL of patients with cataracts significantly improved after Ph-IOL [17][18][19][20][21]. In the present study, we also confirmed that after Ph-IOL, both visual acuity and utility value increased significantly.…”

Prognostic Indicators and Outcome Measures for Surgical Removal of Symptomatic Nonadvanced Cataract

“…We report that patients' self-reported impairment of visual functioning attributable to cataract with CDVA of 0.4 logMAR or better (Snellen equivalent, 20/50) was alleviated by surgery. Our results are consistent with previous studies investigating improvement in visual functioning after cataract surgery 18,36,43 and are consistent with guidelines published by the American Academy of Ophthalmology (http://one.aao.org/CE /PracticeGuidelines/PPP_Content.aspx?cid=a80a87ce -9042-4677-85d7-4b876deed276#section4). However, our results are not in keeping with the recommendations of some investigators, 7,11,17 who have stated that the threshold for cataract surgery should be based on preoperative CDVA of 0.3 logMAR (Snellen equivalent, 20/40) for the better eye and 0.52 logMAR (20/62) for the worse eye and who contend that success should be defined as at least 2 lines of gain in logMAR CDVA.…”

“…34,35 We found a significant gain in precision after Rasch scaling of the questionnaire (a gain of 32% and a relative precision of 1.32), thus reinforcing the current evidence with respect to the benefits of subjecting questionnaires to Rasch scaling. 27,36,37 …”

The impact of the severity of vision loss on vision-specific functioning in a German outpatient population — an observational study

“…However, CTT has several limitations compared to modern psychometric methods such as Rasch analysis, a form of item response theory [11]. Several Rasch-validated versions of the VF-14 are available, such as the VF-8 used in cataract surgery [12], and the VF-11 in low vision [13].The VF-14 was originally designed to measure functional visual disability caused by cataract, [14] and has been subsequently used in patients with other ocular diseases [15][16][17][18][19]. The VF-14 or its shortened versions have been used in countries such as Singapore [13], Malaysia [20], France [21], United Kingdom [22], Canada [23] and United States [24] to assess the impact of vision loss or cataract surgery on visual functioning.…”