Study finds knowledge gaps in public understanding of glaucoma and cataracts

(Image Credit: AdoneStock/jannoon02)8

A cross-sectional study was conducted in the Qassim region of Saudi Arabia to assess the public’s knowledge of glaucoma and cataracts and found knowledge gaps and misconceptions among the public.

The survey collected demographic data, ocular and medical history, and responses assessing knowledge of glaucoma and cataracts via an online electronic questionnaire distributed by social media platforms.

A total of 401 participants completed the survey, of whom 167 (41.6%) were male and 234 (58.4%) were female, and 94% of the total respondents were Saudi nationals. Furthermore, 307 (76.6%) of respondents held a bachelor’s degree, and 101 (25.2%) worked in the health care field. Among the participants, 235 (58.6%) had previously visited an eye clinic, while the rest had never.

A family history of glaucoma or cataracts was reported by 132 (26.9%) of the participants, and 235 (58.6%) personally knew someone with either condition. When asked about glaucoma, only 95 (23.7%) correctly identified it as damage to the optic nerve due to increased eye pressure, whereas 110 (27.4%) incorrectly believed it to be clouding of the lens, and 109 (27.2%) stated they did not know the correct answer. In regard to cataracts, 177 (44.1%) correctly identified it as clouding of the lens, but 64 (16%) confused it with optic nerve damage, and 83 (20.7%) were unsure.

Participants attributed diabetes, family history, and age over 60 years old as the greatest risk factors for glaucoma and cataracts. However, modifiable risk factors such as smoking, corticosteroid use, and excessive sun exposure were poorly recognized, with less than 20% of participants correctly identifying them.

When asked about the symptoms of glaucoma and cataracts, 92 (22.9%) correctly associated them with glaucoma, while 94 (23.4%) incorrectly attributed them to cataracts, and 91 (22.7%) were uncertain. Blurry vision was correctly identified as a symptom of cataracts by 132 (32.9%) of participants, yet 98 (24.4%) associated it with glaucoma, and 82 (20.4%) reported not knowing. Lastly, when asked about tunnel vision, 132 (32.9%) of respondents were unsure it was a symptom of glaucoma, while 93 (23.2%) correctly linked it to glaucoma.

Of those surveyed, 193 (48.1%) and 161 (40.1%) of participants correctly stated that glaucoma and cataracts can lead to blindness, respectively, whereas 163 (40.6%) and 120 (29.9%) correctly stated that glaucoma and cataracts can be treated with medication. Additionally, 129 (32.2%) incorrectly noted that vision loss due to glaucoma is reversible.

According to the results, a significant association between educational level and correct identification of cataract was seen, with participants holding higher education degrees demonstrating better understanding. However, no significant correlation was seen between educational level and correct identification of glaucoma. Health care workers were significantly more likely to correctly identify glaucoma and cataracts compared with non–health care workers.

The authors did note several limitations to the data, such as the online self-reported questionnaire may have introduced selection bias; self-reported knowledge may not accurately reflect actual understanding, as some participants may have guessed responses or had difficulty recalling information; and the study was conducted in the Qassim region of Saudi Arabia, and findings may not be generalizable to other regions with different health care access and awareness levels.

However, the authors emphasized the need for structured public health initiatives to improve eye health literacy, and that targeted awareness campaigns, mass media outreach, and integrating eye health education into primary care services might help.

Reference:

Alswaina N, Alayed FM. Public awareness and knowledge of glaucoma and cataract: a cross-sectional study. Cureus. 17(4):e81928. doi:10.7759/cureus.81928