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Sao Paulo Medical Journal

Print version ISSN 1516-3180On-line version ISSN 1806-9460

Sao Paulo Med. J. vol.133 no.6 São Paulo Nov./Dec. 2015  Epub Nov 13, 2015

http://dx.doi.org/10.1590/1516-3180.2015.01520108 

Letter to the Editor

Impact of cataracts and cataract surgery on quality of vision

Impacto da catarata e da cirurgia de catarata na qualidade da visão

Eirini Skiadaresi1 

Colm McAlinden2 

1Department of Ophthalmology, Singleton Hospital, ABM University Health Board, Swansea, United Kingdom.

2Department of Surgery, Morriston Hospital, ABM University Health Board, Swansea, United Kingdom.

We read with interest the letter to the editor by Fazzi and colleagues who report a negative correlation between anxiety (measured with the IDATE) and quality of life (measured with the WHO-QOL-BREF) in 52 patients with cataracts.1 They state: " This finding corroborates previous studies that have demonstrated low quality-of-life scores among patients with cataracts2..."

We would like to clarify that the cited paper did not assess quality of life in patients with cataracts and hence did not demonstrate low quality-of-life scores among patients with cataracts.2 The study assessed a different latent trait - quality of vision, using the Rasch-scaled Quality of Vision (QoV) questionnaire.3 4 The QoV was completed before and three months after cataract surgery in 212 patients across four groups: first or second eye surgery, with or without ocular comorbidity. The study found that cataracts in one or both eyes causes a similar loss in subjective quality of vision, which is also irrespective of the presence of ocular comorbidity. Cataract surgery resulted in a large and comparable improvement in subjective quality of vision, regardless of ocular comorbidity and first or second eye surgery. 2 These improvements in quality of vision are in line with improvements using visual function and quality of life questionnaires following cataract surgery, which may indicate a relationship between these latent traits.5 6

REFERENCES

Fazzi L, Dobrianskyj FM, Reggi JR, et al. The influence of anxiety on quality of life among patients with an indication for cataract surgery. Sao Paulo Med J. 2015;133(2):160-1. [ Links ]

Skiadaresi E, McAlinden C, Pesudovs K, et al. Subjective quality of vision before and after cataract surgery. Arch Ophthalmol. 2012;130(11):1377-82. [ Links ]

McAlinden C, Pesudovs K, Moore JE. The development of an instrument to measure quality of vision: the Quality of Vision (QoV) questionnaire. Invest Ophthalmol Vis Sci. 2010;51(11):5537-45. [ Links ]

McAlinden C, Skiadaresi E, Gatinel D, et al. The Quality of Vision questionnaire: subscale interchangeability. Optom Vis Sci. 2013;90(8):760-4. [ Links ]

Gothwal VK, Wright TA, Lamoureux EL, et al. Improvements in visual ability with first-eye, second-eye, and bilateral cataract surgery measured with the visual symptoms and quality of life questionnaire. J Cataract Refract Surg. 2011;37(7):1208-16. [ Links ]

McAlinden C, Gothwal VK, Khadka J, et al. A head-to-head comparison of 16 cataract surgery outcome questionnaires. Ophthalmology. 2011;118(12):2374-81. [ Links ]

1ABM University Health Board, Swansea, United Kingdom

IMD, MSc, FEBO. Ophthalmologist, Department of Ophthalmology, Singleton Hospital, ABM University Health Board, Swansea, United Kingdom.

IIMB BCh, BSc (Hons), MSc, PhD. Doctor, Department of Surgery, Morriston Hospital, ABM University Health Board, Swansea, United Kingdom.

6Editor's note: The authors of the article "The influence of anxiety on quality of life among patients with an indication for cataract surgery" chose not to send a reply to this letter.

Sources of funding: None

Received: July 23, 2015; Accepted: August 01, 2015

Address for correspondence: Colm McAlinden Department of Surgery Morriston Hospital, ABM University Health Board Heol Maes Eglwys, Morriston, Swansea, SA6 6NL United Kingdom E-mail: colm.mcalinden@gmail.com

Conflict of interest:

None

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