Table 2 Summarized study findings

Molla I, et al.,2022

(Glaucoma and associated factors among adults in Jimma town, southwest Ethiopia)

1. The proportion of good knowledge towards glaucoma among adult was 50.9% (95% CI 44.3%, 57.8%).

2. Educational status [(AOR = 6.07, 95% CI: (2.06, 17.87)], and ever had eye examination [(AOR = 3.58, 95% CI: (2.01, 6.40)], were the associated factors with knowledge of glaucoma.

1. Half of them had good knowledge of glaucoma.

2. Educational status and eye examination were associated factors with good knowledge of glaucoma.

Ocansey T,et al.,2021

(Socio-demographic factors modify awareness, knowledge, and perceived risk of glaucoma in rural and urban residents in Ghana: a population based survey)

1. Good knowledge was demonstrated in 99 (30.4%, 95% CI = 25.4–35.4) participants about glaucoma.

2. Educational status [(AOR = 1.35, 95% CI: (1.2, 1.49)], and ever had eye examination [(AOR = 1.96, 95% CI: (1.35, 2.52)], were the associated factors with knowledge of glaucoma.

1. Only few had good knowledge of glaucoma.

2. The main factors of glaucoma knowledge were education and previous eye examination.

Assavedo C,et al.,2021

(Knowledges, Attitudes and Practices Related to Primitive Open Angle Glaucoma in The Adult Population in Northern Benin)

1. Only 1.24% had a good knowledge of glaucoma.

1. The level of knowledge of glaucoma in the adult population in Benin is alarmingly low

2. Education (high school and university levels) and occupation were significantly associated with glaucoma.

Osayem J,et al.,2021

(Awareness and knowledge on glaucoma in Ikpoba-Okha, south-south Nigeria)

1. 38% of the respondents had good knowledge of glaucoma

2. Respondents in the age group of 30–39 years (p < 0.001) and those with tertiary level of education (p < 0.001) had higher awareness of glaucoma.

1. The majority of respondents had no good knowledge of glaucoma

2. Education and age group of 30–39 years were significantly associated with glaucoma.

Yenegeta Z,et al.,2020

(Knowledge of glaucoma and associated factors among adults in Gish Abay town, Northwest Ethiopia)

1. The proportion of good knowledge was demonstrated in 16.8% [95% CI; 14.0, 19.9]

2. Educational status: primary education [AOR; 2.89: 1.41, 5.90], secondary education [AOR; 3.03: 1.47, 6.24] college and above [AOR; 5.18: 2.21, 12.13], history of eye examination [AOR; 6.52: 3.37, 12.63]; family history of glaucoma [AOR; 12.08: 4.13, 35.30] and higher income level [AOR; 3.11: 1.55, 6.25] were positively associated with good knowledge of glaucoma.

1. The proportion of good knowledge of glaucoma was low

2. Higher educational status, positive family history of glaucoma; eye examination and higher income level were significantly associated with knowledge of glaucoma.

Alemu D,et al.,2017

(Awareness and knowledge of glaucoma and associated factors among adults: a cross sectional study in Gondar Town, Northwest Ethiopia)

1. Good knowledge was demonstrated in 49.6% (95% CI: 43.3%, 55%) of participants.

2. Level of Education (primary [AOR:2.83;1.04,7.71], secondary [AOR:3. 45;1.33,9.41], college and above [AOR: 4.86;1.82,12,99] and having eye examination [AOR: 2.61;1.53,4.45] were significantly associated with knowledge.

1. The proportion of good knowledge of glaucoma was low inadequate

2. Education and having eye examination were significantly associated with knowledge.

Ibanga, A,et al.,2017

(Glaucoma awareness and knowledge among people attending ophthalmic outreach services in a rural area of Cross River State, Nigeria)

1. Only 8.7% had good knowledge of glaucoma

2. Average monthly income (χ² = 15.771, P = 0.003) and previous eye checks (χ² = 7.565, P = 0.023).

1. The level of knowledge of the glaucoma was poor in the population.

2. Average monthly income and previous eye checks were significantly associated with knowledge.

Ogbonnaya C,et al.,2016

(Glaucoma Awareness and Knowledge, and Attitude to Screening, in a Rural Community in Ebonyi State, Nigeria)

1. Only 27(6.3%) of the respondents had good knowledge about glaucoma

2. Education (> secondary) (χ² = 7.30; p = 0.007) and being male (29.3% men vs. 14.9% women; χ² = 12.27; p < 0.001) were predictors of knowledge.

1. The proportion of good knowledge of glaucoma was low.

2. Higher educational status and gender (male) were significantly associated with knowledge of glaucoma.