Back to Journals » Clinical Optometry » Volume 7

Strategies to help patients stop smoking: the optometrist's perspective

Authors Kennedy R, Douglas O

Received 31 May 2015

Accepted for publication 14 July 2015

Published 25 November 2015 Volume 2015:7 Pages 103—113

DOI https://doi.org/10.2147/OPTO.S63185

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr L. Srinivasa Varadharajan

Peer reviewer comments 2

Editor who approved publication: Mr Simon Berry


Ryan David Kennedy,1,2 Ornell Douglas2

1Department of Health, Behavior and Society, Institute for Global Tobacco Control, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; 2Propel Centre for Population Health Impact, University of Waterloo, Waterloo, ON, Canada

Abstract: The following review article discusses tobacco's toll on individual and public health, and presents what is currently known about cigarette smoking's risk to ocular health. The article also discusses what eye care professionals – specifically optometrists – can do to help address tobacco use with their patients. Smoking is a leading preventable cause of age-related macular degeneration, and is also causally associated with the development of cataract, thyroid-associated ophthalmopathy, and uveitis. Smoking's causal association with vision loss is now used in some countries' health warning labels that appear on tobacco products and national social marketing materials including the US Centers for Disease Control and Prevention. Despite this uptake in health promotion education, very few eye care professionals regularly engage their patients in discussions about tobacco use. Optometrists can be a helpful addition to a smoking cessation health care network that already involves more than a dozen health care professions including medicine, nursing, pharmacy, dentistry, and dental hygiene. Optometrists can further play an important role in educating younger non-smoking patients about the risk of smoking and vision loss to support tobacco-use prevention. Optometrists report that they feel that addressing tobacco use is "not their job" or argue that this is more appropriately done by a family physician/general practitioner. This review article presents the rationale that all primary care providers have a role and a responsibility to discuss tobacco use with their patients. This review article outlines some techniques and strategies that optometrists can use to begin important discussions with their patients about tobacco use, to both support prevention and cessation efforts to support healthy ocular systems and improve public health. Further strategies that health care practitioners use to either connect patients with cessation services, or strategies that practitioners can deliver are also outlined.

Keywords: smoking, tobacco use, prevention, cessation, age-related macular degeneration

Introduction

Tobacco use continues to be the leading cause of death and disease in the world

It is well understood that tobacco use has had a profound impact on public health although the scale and scope of the impact may be less well known. Tobacco use killed 100 million people in the 20th century.1 Today, tobacco use causes globally over five million deaths annually.2,3

In addition to contributing to chronic diseases including cancers and ischaemic heart disease, smoking is an important risk factor for communicable diseases such as tuberculosis and lower respiratory infections.4,5 Tobacco use exacerbates other non-communicable diseases, as well as mental illnesses and other substance abuse problems including alcoholism. Tobacco production, manufacturing, and distribution each damage the environment and have been highlighted as a hindrance to human development.1

There have been important gains in tobacco control in many countries around the world. However, tobacco use continues to be the single most prevalent cause of death, disease, and disability globally.1,6 In the years to come, tobacco’s toll on public health is expected to deepen. By the year 2030, tobacco use will cause eight million deaths or 10% of all global deaths. If current patterns of smoking continue over the 21st century, over one billion people will die from tobacco use.7,8

Tobacco-use initiation and prevalence

In developed countries where the tobacco industry has operated for more than 100 years, there is generally declining prevalence of tobacco use; however, substantial differences in smoking prevalence by education level have persisted over the last decade.9 Globally, people with lower socioeconomic status are more likely to smoke, men smoke more than women, people living with mental illness are nearly twice as likely to smoke as other persons, and although data are not available globally, where studies have been conducted, people from the lesbian, gay, bisexual, and transgender community are also much more likely to smoke.1

Although initiation rates differ slightly between countries, the majority of tobacco users start using tobacco before the age of 18. In Canada in 2012, the mean age at which ever-smokers, age 25 and over, smoked their first full cigarette was 16.4, with 95% of respondents reporting between ages 9 and 25 (Canadian Tobacco, Alcohol and Drugs Survey, Statistics Canada, unpublished data, 2015).9

Tobacco users want to quit

Approximately 80% of adult smokers in developed countries report that they want to quit, and approximately half report that they try to quit in any given year.10 This study of adult smokers in Canada, the US, the UK, and Australia reported that the proportion of smokers who agreed or agreed strongly with the statement ‘‘If you had to do it over again, you would not have started smoking’’ was approximately 90%, and across the four countries.10

Tobacco control policies and health care providers

To help address the global epidemic of tobacco use, the global health community, through the World Health Assembly, negotiated a global treaty on tobacco control. The World Health Organization Framework Convention on Tobacco Control (WHO FCTC) was the world’s first global health treaty, and is one of the world’s most successful treaties with 180 parties as of 2015.11 The FCTC requires member parties to adopt policies that protect citizens from exposure to tobacco smoke, and other public health strategies including awareness campaigns, other health communication strategies, and appropriate training for health professionals to better communicate the health effects of tobacco use with their patients. These strategies are important because smokers with greater knowledge of the broad range of health effects of smoking are more likely to quit and remain abstinent.12

The American Medical Association recommends that all primary health care providers ask patients as young as 10 years about their tobacco use to encourage both prevention and cessation. The US Prevention Services Task Force recommends that all primary care clinicians provide interventions to prevent initiation of tobacco use among school-aged children and adolescents.13 There is evidence that these types of primary care relevant interventions can prevent smoking initiation with children and adolescents.14

Despite direct calls for health care providers to engage their patients on the issue of tobacco use, there are many countries in the world where primary care physicians are not talking to their patients about tobacco. One study that examined advice from health care providers in 15 different countries revealed that among smokers who did visit a health care provider, provision of advice to quit varied greatly, the proportion of respondents who visited a doctor and got advice to quit using tobacco ranged from greater than 50% in the US to less than 30% in the UK, and less than 10% in the Netherlands.15 The health care providers were not specified, the respondents were asked “Have you visited a doctor or other health professional since last survey date?” so it is unclear if respondents would include eye health specialists.

There are numerous reasons for optometrists to be engaged with their patients around tobacco use, both to support prevention and cessation. Table 1 summarizes the findings from the introduction.

Table 1 Things to consider when optometrists discuss tobacco use with their patients
Abbreviation: CDC, Centers for Disease Control and Prevention.

Smoking’s impact on ocular health

Tobacco use is associated with numerous ocular diseases that result in vision loss. Smoking has been identified as the most important known preventable risk factor for developing age-related macular degeneration (AMD)1619 and the strongest environmental risk factor for all forms of AMD.20 The more someone smokes, in terms of the number of cigarettes per day and years of smoking, the greater the likelihood of developing early AMD.21 The New York State Department of Health reports that non-smokers living with smokers have approximately double the risk of developing AMD.22 Cohort studies suggest that current smoking triples AMD incidence.23

Few countries have published data quantifying the number of people who have lost their vision as a result of smoking. A 2005 study in the UK estimated that 28,000 cases of AMD in older people is attributable to smoking.24 In Australia, it is estimated that 20% of all new cases of blindness in people over the age of 50 are caused by smoking.25 Further, exposure to second-hand smoke can also increase the risk of developing eye disease.

In 2014, the US Surgeon General report added AMD to the list of smoking-attributable diseases.19 The report’s executive summary describes the association between smoking and vision loss in a way that can be explained to patients. This is presented in Table 2.

Table 2 US Surgeon General’s report concludes a causal relationship exists between cigarette smoking and age-related macular degeneration (AMD)
Notes: Reproduced from The Health Consequences of Smoking: 50 Years of Progress. A Report of the Surgeon General. Atlanta, GA: US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health, 2014. Printed with corrections, Jan 2014. Available from: http://www.surgeongeneral.gov/library/reports/50-years-of-progress/full-report.pdf. Accessed August 13, 2015.19

Epidemiological studies also indicate an association between smoking and an increased risk for age-related cataracts, particularly nuclear cataract,26,27 inflammatory and infectious uveitis,28 thyroid-associated ophthalmopathy,29,30 optic neuropathy,31,32 and ocular surface disorders.33,34

More recent studies have concluded that there is not sufficient evidence to attribute a causal association between smoking and incident primary open-angle glaucoma.31,3536

It is in the best interest of patients to be advised by optometrists of the potentially harmful effects of smoking on their vision. The US Surgeon General further outlines how it is important for optometrists, ophthalmologists, and other health care providers to assess and address the smoking status of patients.19

Social marketing – communicating the causal association of smoking and ocular health

Globally, the public is largely unaware of the impact of smoking on eye health.37,38 In a 2011 study, few adult smokers from Canada (13.0%), the US (9.5%), and the UK (9.7%) were aware that smoking can cause blindness.37 However, in Australia, the federal government had for many years sponsored national awareness campaigns including a television commercial that linked smoking and blindness. In Australia, 47.2% of adult smokers were aware of this association – significantly higher than Canada, the US, and the UK, but the majority of smokers were still unaware of these links.

In recent years, the health effect from tobacco use on ocular health has been included by some countries’ health authorities on their tobacco product health warning labels (HWLs). Pictorial health warnings communicating smoking’s causal association with blindness has been used on cigarette packages in Australia, Canada, Singapore, Suriname, Iran, Jamaica, and New Zealand.39 Some examples of these warning labels are shown in Figures 1 and 2, which portray diseased eyes or eyes undergoing medical treatment.

Figure 1 Australian health warning label, 2011.
Notes: Copyright 2011 © Commonwealth of Australia. Courtesy of the Australian Government Department of Health.

Figure 2 Canadian health warning label, 2012.
Notes: Copyright © 2012, Insidermedicine. Figure reproduced with permission. Figure from: Tobacco Labelling Resource Centre. Available from: http://www.tobaccolabels.ca/. Accessed August 13, 2015.74

After the introduction of the blindness warning label on tobacco products (Figure 1), more than half of Australian smokers (62%) reported that they knew that smoking causes vision loss.40 The findings from this study suggest that even with comprehensive public education campaigns and the use of tobacco product HWLs, a substantial proportion of the population may still not know that their ocular health is at risk from smoking cigarettes. Further, when the Australian “Eye” HWL (Figure 1) was evaluated using focus groups, some participants, both smokers and non-smokers, suggested that the link between smoking and blindness was hard to believe. Some participants reported not understanding how smoking affects the eye and how visual loss can result; some believing that it must be caused from smoke getting in their eyes.41 There is therefore a need for eye care professionals to further educate their patients about how smoking impacts vascular health to ensure patients understand and believe that smoking can cause vision loss.

The Centers for Disease Control and Prevention (CDC) in the US has included the impact of smoking on vision loss in their “Tips from Former Smokers” campaign.42 One of the former smokers is a woman named Marlene who developed AMD from smoking. Her story is available from the CDC and available on the CDC channel on YouTube.43

Role for optometrists

There is compelling evidence that advice from health care practitioners is effective in encouraging smoking cessation and that a significant difference is made even with a minimal intervention with a patient – even an intervention that lasts less than 3 minutes in duration.4446

Optometrists, as primary health care practitioners, could play a valuable role in educating patients about the health risks associated with smoking and promote smoking cessation. Every optometric appointment provides opportunity for optometrists to address the hazards of tobacco use, its impact on eye health, and the benefits of quitting.47

Optometrists are well positioned to address tobacco use with their patients. In Canada, for example, optometrists provide more than two-thirds of the primary eye care services.48 Studies to understand optometrists’ role in addressing tobacco use suggest that the vast majority of practitioners are not actively involved in tobacco-use prevention or cessation. One study found that many Canadian optometrists are uncomfortable addressing tobacco with patients because the optometrists surveyed believe that society already ‘‘hassles’’ people who smoke, and further rationalized that they are not the ‘‘best’’ suited primary care professional to support cessation.49

Optometrists are uniquely positioned to address tobacco use because smoking is a leading cause of vision loss. Many people fear losing their vision. In the US, a recent public opinion poll determined that many Americans describe losing eyesight as potentially having the greatest impact on their day-to-day life, more so than other conditions including loss of a limb, memory, hearing, and speech.50 In a British study, fear of blindness among youth was higher than the fear of heart disease, lung cancer, and stroke due to cigarette smoking.38,51 People recognize that vision loss would immediately compromise quality of life and independence since it leads to the inability to drive, read, travel in unfamiliar areas, and simply cope in everyday life.

Some optometrists have asked for pamphlets, posters, and other materials to help them initiate discussions with their patients about tobacco use. A variety of tools that help explain smoking and vision loss were developed in consultation with Canadian optometrists (Figures 36).

All materials are available for download and reproduction by visiting https://uwaterloo.ca/propel/resources-and-products/smoking-eye-health.

Figure 3 Poster for optometry clinic – preparing patients to be asked about tobacco use.
Notes: Reproduced from University of Waterloo. Propel Centre for Population Health Impact. Your optometrist will ask you poster – English; 2012. Available at: https://uwaterloo.ca/propel/sites/ca.propel/files/uploads/files/YourOptometristWillAskYouPoster_en.pdf. Accessed October 6, 2015.75 Public License and Disclaimer of Warranties and Limitation of Liability are available at: http://creativecommons.org/licenses/by-nd/4.0/legalcode.

Figure 4 Poster for optometry clinic – encouraging patients to ask optometrists about the health effects of smoking on ocular disease.
Notes: Reproduced from University of Waterloo. Propel Centre for Population Health Impact. Feel free to ask (your optometrist) poster – English; 2012. Available at: https://uwaterloo.ca/propel/sites/ca.propel/files/uploads/files/FeelFreeToAskPoster_ en.pdf. Accessed October 6, 2015.76 Public License and Disclaimer of Warranties and Limitation of Liability are available at: http://creativecommons.org/licenses/by-nd/4.0/legalcode.

Figure 5 Poster for optometry clinic – explaining the causal association between smoking and vision loss.
Notes: Reproduced from University of Waterloo. Propel Centre for Population Health Impact. How does smoking cause blindness? [poster]; 2012. Available at: https://uwaterloo.ca/propel/sites/ca.propel/files/uploads/files/HowSmokingCausesBlindnessPoster_en.pdf. Accessed October 6, 2015.77 Public License and Disclaimer of Warranties and Limitation of Liability are available at: http://creativecommons.org/licenses/by-nd/4.0/legalcode.

Figure 6 Front and back covers of information pamphlet.
Notes: Reproduced from University of Waterloo. Propel Centre for Population Health Impact. Smoking and your eye health brochure – English; 2012. Available at: http://bit.ly/PropelEyeHealth. Accessed October 6, 2015.78 Public License and Disclaimer of Warranties and Limitation of Liability are available at: http://creativecommons.org/licenses/by-nd/4.0/legalcode.

Practitioners working in jurisdictions that have tobacco product HWLs can begin discussions with patients by asking if they have seen the new label.

Interventions that optometrists offer may increase the likelihood of tobacco users attempting to quit and being more successful when supported.44 There is strong evidence that advice from health care professionals in general can be effective in helping clients quit, and for many, cessation interventions are now considered requisite duties.44,52 A meta-analysis of randomized clinical trials and quasi-experiments concluded that patients who receive advice to quit smoking from “any health care provider” will result in increased quit rates.53 Furthermore, the role optometrists can play in assisting patients to quit smoking can have a major influence in their decision to take action toward quitting.

The WHO FCTC and the 2008 US Public Health Service Clinical Practice Guideline “Treating Tobacco-use and Dependence”, which reviewed 8,700 research articles, recommend that ALL health care professionals and students in health care education programs should be trained in effective tobacco-use cessation and dependence strategies.54,55

Numerous studies have identified that the optometry community does currently address some tobacco use among patients, and has an interest in doing more.49,56

How to talk to patients about tobacco use

Every primary care visit offers the potential to discuss such options, but communication can be difficult for patients and providers. Research has identified that patients expect health care providers to address smoking at every visit, that health care providers are trusted by patients, and the discussions need to be conducted with respect.57 Patients report that they prefer receiving messages that are positively framed, for example “when you quit…”, and “we have plenty of things for you to help [you quit]”.58

Many health care practitioners including dentists, pharmacists, nurses, midwives, occupational therapists, and others are providing patient advice or brief intervention regarding smoking cessation.52,58,59 Studies have shown that there is a positive response from various health care providers when providing some type of tobacco cessation intervention among patients.60,61 Many of these professions have developed and integrated tobacco cessation practices into their clinical practice guidelines, which reflect the importance of this issue in all aspects of health care.15,52,62

General approaches that can be used to support patient cessation

There are no official clinical guidelines for optometrists to follow to support tobacco use cessation; however, other primary care provider groups do have guidelines that could be adapted.

There are several approaches that optometrists and other health care practitioners may employ in order to assist patients in quitting smoking in a minimally intrusive manner. Some focus on connecting a patient with a specific cessation support service, while other approaches rely on the provider to personally support patient cessation.

When considering how to address tobacco use, there are some guiding principles that can support discussions with patients about tobacco use. These are listed below:

  • To facilitate an appropriate response to tobacco use and dependence, it is necessary to recognize the addictive nature of tobacco.
  • Effective management of tobacco use and dependence requires a coordinated interdisciplinary approach, including collaboration with the patient/client in order to provide patient-centered care.
  • Recognize practice setting-specific needs and priorities.
  • Recognize and respect cultural differences with respect to tobacco use.
  • Frame the activities undertaken within a context of excellence in client care, patient safety, and integration.63

Practitioners need to remember that nicotine is a drug and discussions about tobacco use need to begin with understanding that smoking is generally not a “bad habit”, but a physical addiction. It is unlikely that any single health care provider will manage a patient’s addiction, and that patients will likely receive support from a range of providers including general practitioners, dentists, pharmacists, counselors, and hopefully optometrists. In Aboriginal North American communities, tobacco has an important cultural/spiritual role. It is important to recognize that commercial cigarettes are very different from traditional tobacco use but there is an important distinction. Some cultures commonly gift cigarettes and the use of cigarettes may be deeply incorporated into other activities.

A number of tobacco cessation counseling strategies exist and all are similar in terms of how health care providers can support patients. Perhaps two of the most known are the 5A program promoted by the United States Public Health Service64 and the ABC tool promoted by the New Zealand Smoking Cessation Guidelines Group. The ABC tool (Ask – all patients if they smoke; provide Brief advice to quit to all smokers; and offer Cessation support) was outlined in detail in a previous article for optometrists.65 There are online training resources for practitioners interested in being trained in the ABC method.66

This review article includes details of the 5A program, and each step is outlined in detail in Table 3.54,6769 The 5As are Ask, Assess, Advise, Assist, and Arrange. Each of these steps is detailed with suggestions on how to effectively communicate with patients.

Table 3 The 5As model
Abbreviations: GP, general practitioners; NRT, nicotine replacement therapy; AMD, age-related macular degeneration.

As stated above, optometrists should begin asking patients as young as age 9 about their tobacco use. The 5As does not include suggestions around scripting for prevention. Children and adolescents are knowledgeable about the fact that smoking is “bad” – but similar to adults, may be unaware that smoking can cause vision loss. Optometrists should focus prevention methods on the causal association of smoking and “blindness”, and relate impacts on quality of life such as lack of independence.

Recent qualitative research has highlighted that smokers do not need to be told that smoking is bad for their health;57 however, most adults who use tobacco may be unaware of the association between smoking and vision loss so that there is a need for eye health specialists to explain the causal association.

It is also important to remember that most people who smoke try to quit several times before they are successful. Cessation generally takes many attempts. Some people trying to quit will reduce the number of cigarettes smoked per day. In some studies, it is reported that most quit attempts (79%) last less than 1 day,70,71 the take home message being that quitting can be a complex process.

Discussion

Tobacco use is the most important, preventable risk factor for AMD, which is the leading cause of vision loss. The significant impact that vision loss has on the quality of life would undermine the overall health and well-being of all individuals. Based on this association between smoking and vision loss, it is clear that optometrists, as primary eye care providers, have good reason to address tobacco use among patients and are well positioned to advise patients on the issue.

Many optometrists, however, hold the belief that it is not their role to provide referrals to patients who require cessation assistance, and concede this to be the responsibility of primary care practitioners. Evidence suggests that advice from health care professionals can be effective in helping clients quit, and that optometrists can play a significant role in assisting patients to quit smoking and may influence their decision to take action toward quitting. Further, patients report that they expect their health care providers to discuss tobacco use at every visit and want support to quit.

Optometrists should provide educational materials to patients that explain how smoking is linked to vision loss. Educational tools such as posters and pamphlets are also available and can further support discussions. Optometrists should learn what cessation supports are available in their community. There may be community smoking cessation programs run through local public health agencies, cancer societies, or hospitals. Often countries/states/provinces provide telephone or web-based smoking cessation services that are often free of charge for patients.

Optometrists have also expressed a strong interest in pursuing further training through continuing education programs that focus on the impact of smoking on vision and eye health;52 as well as a program that focusses on how to provide smoking prevention and cessation advice to patients. Such programs have been delivered in Canada through the University of Waterloo School of Optometry and Vision Science.72 In the UK, a pilot study has demonstrated the feasibility of delivering brief smoking cessations with good success.73

Specific actions optometrists can take to support tobacco-use prevention and cessation are highlighted in Table 4.

Table 4 Actions optometrists can take to support tobacco-use prevention and cessation

With the proper training and resources, it is certain that optometrists can and will play a greater role in addressing tobacco-use cessation among patients, and have a deep influence in a patient’s potential success in quitting. There is still significant work to have optometry fully integrated into the tobacco-use prevention and cessation systems, but this will develop with deep co-operation between public health and optometry partners. Optometrists’ potential contributions are too great to not be fully engaged.

Acknowledgments

Ryan David Kennedy completed this work through support from the Propel Centre for Population Health Impact at the University of Waterloo. The Propel Centre for Population Health Impact was supported by a Major Program grant from the Canadian Cancer Society Research Initiative (CCSRI grant number 701019).

Disclosure

The authors report no conflicts of interest in this work.


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