Functional and visual acuity outcomes of cataract surgery in timor-leste (east timor)

Naidu, Girish, Correia, Marcelino, Nirmalan, Praveen, Verma, Nitin and Thomas, Ravi (2014) Functional and visual acuity outcomes of cataract surgery in timor-leste (east timor). Ophthalmic Epidemiology, 21 6: 397-405. doi:10.3109/09286586.2014.975824

Author Naidu, Girish
Correia, Marcelino
Nirmalan, Praveen
Verma, Nitin
Thomas, Ravi
Title Functional and visual acuity outcomes of cataract surgery in timor-leste (east timor)
Journal name Ophthalmic Epidemiology   Check publisher's open access policy
ISSN 1744-5086
Publication date 2014-12-01
Year available 2014
Sub-type Article (original research)
DOI 10.3109/09286586.2014.975824
Open Access Status
Volume 21
Issue 6
Start page 397
End page 405
Total pages 9
Place of publication London, United Kingdom
Publisher Informa Healthcare
Collection year 2015
Language eng
Formatted abstract
Purpose: To report functional outcomes following cataract surgery in Timor-Leste.

Methods: Pre- and post-intervention study measuring visual function improvement following cataract surgery. Presenting visual acuity (VA) was measured and visual function documented using the Indian vision function questionnaire (IND-VFQ).

Results: All 174 persons undergoing cataract surgery from November 2009 to January 2011 in Timor-Leste were included. Mean age was 65.4 years; 113 (64.9%) were male, 143 (82.1%) were from a rural background and 151 (86.8%) were illiterate. Pre-operatively, 77 of 174 patients (44.3%, 95% confidence interval, CI, 37.0–51.7%) were blind (VA ≤3/60), 77 (44.3%, 95% CI 37.0–51.7%) were visually impaired (VA <6/18–>3/60), while 20 (11.5%, 95% CI 7.4–16.9%) had presenting acuity ≥6/18 in the better eye. Following surgery, significant improvement in visual function was demonstrated by an effect size of 2.8, 3.7 and 3.9 in the domains of general functioning, psychosocial impact and visual symptoms, respectively. Four weeks following surgery, 85 patients (48.9%, 95% CI 41.5–66.3%) had a presenting VA ≥6/18, 74 (42.5%, 95% CI 35.3–45.9%) were visually impaired and 15 (8.6%, 95% CI 5.0–13.6%) were blind. IND-VFQ improvement occurred even in patients remaining visually impaired or blind following surgery.

Conclusion: In this setting, cataract surgery led to a significant improvement in visual function but the VA results did not meet World Health Organization quality criteria. IND-VFQ results, although complementary to clinical VA outcomes did not, in isolation, reflect the need to improve program quality.
Keyword Cataract surgery
East Timor
Indian vision function questionnaire (IND-VFQ)
Visual acuity
Visual function
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Medicine Publications
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