Prevalence and topographical characteristics of keratoconus in patients with refractive errors in the Egyptian delta

Elbedewy, Hazem A; Wasfy, Tamer; Soliman, Shaimaa; Sabry, Moataz; Awara, Amr M; El-Emam, Sharif; Shafik, Heba M.; Alam, Mostafa R.

doi:10.1007/s10792-018-0965-4

Cited by 16 publications

(33 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The association between KC and allergic conjunctivitis is controversial; however, most studies have reported a firm association between allergy with eye rubbing and keratoconus. 17 In our study, we found that the percentage of subclinical KC in males 6.8% was significantly higher than in females 2.8%. Some studies in the literature have reported a higher prevalence of KC in males.…”

Section: Dovepresssupporting

confidence: 42%

“…4 Prevalence of KC is higher in the Middle East than in other areas, as proved by literature. 9,10,[14][15][16][17] This might be due to the high incidence of chronic allergies and spring catarrh. 17 In our study, VKH was reported in 35% of cases with subclinical KC, which is comparable to the value obtained by Omar & I.A.N who reported a 37.5% prevalence of VKC in KC eyes in Egyptian children with myopia.…”

Section: Dovepressmentioning

confidence: 99%

“…Also, we divided cases into two age groups in order to highlight the higher prevalence rate of the disease among older age groups, as we report a higher percentage (8.2%) of subclinical KC among the older age group (12)(13)(14)(15)(16)(17)(18) years as compared to (1.4%) in the younger age group. A result was consistent with Awwad et al study that reported an increased prevalence of KC among increasing age groups of pediatric first-degree relatives of KC patients.…”

Section: Dovepressmentioning

confidence: 99%

See 2 more Smart Citations

<p>Prevalence of Subclinical Keratoconus Among Pediatric Egyptian Population with Astigmatism</p>

Sidky¹,

Hassanein²,

Eissa³

et al. 2020

OPTH

View full text Add to dashboard Cite

Purpose: To report the prevalence of subclinical keratoconus (KC), and KC suspects, in pediatric Egyptian population with astigmatic error ≥2 diopters (D), with the use of CSO Sirius tomographer. Methods: A cross-sectional study that included all the children aged 6-18 years with an astigmatic error of ≥2 D who attended the pediatric ophthalmology clinic for routine checkups during the period between March 2017 and December 2017 was done. All subjects underwent comprehensive ophthalmic examination, and corneal imaging using CSO Sirius instrument, a pentacam with Scheimpflug technology. Results: There were 547 subjects enrolled in our study. Mean age was 11.34 ± 3.03 (range 6-18) years. There were 278 subjects (50.8%) between 6 and 12 years, and 269 subjects (49.2%) between 12 and 18 years. Males represented 48.4% and females represented 51.6% of patients. Among all the subjects, there were 26 (4.8%) KC patients, 24 (4.4%) KC suspects, and 497 (90.9%) were normal. Conclusion: Prevalence of subclinical KC among pediatric age group with astigmatism is relatively high, hence the importance of corneal tomography screening of children with astigmatic error ≥2 D.

show abstract

Section: Dovepresssupporting

confidence: 42%

Section: Dovepressmentioning

confidence: 99%

Section: Dovepressmentioning

confidence: 99%

See 1 more Smart Citation

<p>Prevalence of Subclinical Keratoconus Among Pediatric Egyptian Population with Astigmatism</p>

Sidky¹,

Hassanein²,

Eissa³

et al. 2020

OPTH

View full text Add to dashboard Cite

show abstract

“…All articles were published between 2007 and 2020, with the majority (11) published within the last 5 years, i.e., 2016-2020. Five of the studies were conducted in Egypt, [32][33][34][35][36] two in South Africa, 37,38 two in Kenya, 39,40 one in Sudan, 41 one in Ghana 42 and one in Nigeria. 43 Two studies were conducted in allergic conjunctivitis patients, 33,39 four on exclusively keratoconus patients, 37,[40][41][42] one in patients seeking contact services, 38 one in pre-LASIK patients, 36 one in refractive patients 32 and one in a student population.…”

Section: Resultsmentioning

confidence: 99%

“…Five of the studies were conducted in Egypt, [32][33][34][35][36] two in South Africa, 37,38 two in Kenya, 39,40 one in Sudan, 41 one in Ghana 42 and one in Nigeria. 43 Two studies were conducted in allergic conjunctivitis patients, 33,39 four on exclusively keratoconus patients, 37,[40][41][42] one in patients seeking contact services, 38 one in pre-LASIK patients, 36 one in refractive patients 32 and one in a student population. 43 Eleven (91.7%) were hospital-based studies 32,33,[36][37][38][39][40][41][42] and one was a school-based study.…”

Section: Resultsmentioning

confidence: 99%

Keratoconus in Africa: A systematic review and meta‐analysis

Akowuah

Kobia‐Acquah

Donkor

et al. 2021

Ophthalmic Physiologic Optic

View full text Add to dashboard Cite

The aim of this review is to evaluate the prevalence of and factors associated with keratoconus in Africa. Method: A systematic online literature search was conducted for articles on keratoconus in Africa. Meta-analysis was performed to estimate the prevalence of keratoconus in Africa. The Freeman-Tukey double arcsine transformation was used to minimize the effects of studies with extremely high or low prevalence estimates on the overall pooled estimates. Leave-one-out sensitivity analysis was used to assess the robustness of the pooled effects and potential outliers. Meta-regression was performed to explore associations between keratoconus, gender and age. Results: Twelve studies were included in the review; 5 from Egypt, 2 from South Africa, 2 from Kenya, 1 from Sudan, 1 from Ghana and 1 from Nigeria. Two studies were conducted in allergic conjunctivitis patients, 4 in keratoconus patients, 1 in contact lens service seekers, 1 in pre-LASIK patients, 1 in refractive patients and 1 in a student population. Eight studies were included in the meta-analysis. The overall prevalence estimate of keratoconus in Africa was 7.9% (95% CI: 2.5%-16.0%). The prevalence of keratoconus among males and females in Africa was estimated to be 9.3% (95% CI: 2.5%-19.5%) and 5.8% (95% CI: 1.5%-12.7%) respectively. The estimated prevalence of unilateral and bilateral keratoconus was 2.6% (95% CI: 0.4%-6.5%) and 5.8% (95% CI: 1.6%-12.3%), respectively. The estimated prevalence of mild keratoconus was 2.2% (95% CI: 0.7%-4.7%), moderate keratoconus was 3.5% (95% CI: 0.0%-11.8%) and severe keratoconus was 4.0% (95% CI: 0.0%-19.6%). There was no significant association between gender and the prevalence of keratoconus in Africa (p = 0.63), and age and the prevalence of keratoconus in Africa (p = 0.78). Conclusion:The estimated prevalence of keratoconus reported here is higher than prevalence values reported in other meta-analyses or different geographical locations. This is mainly because studies included in this meta-analysis were either conducted on a cohort at high risk of keratoconus or a population with high possibility of finding keratoconus patients. There is a dearth of well-designed population-based studies on keratoconus in Africa, resulting in a lack of epidemiological information. This highlights the urgent need for research on keratoconus in Africa.

show abstract

Características clínico-epidemiológicas del queratocono en Asturias

Berdasco

Muñoz²,

Fernández³

et al. 2023

Archivos de la Sociedad Española de Oftalmología

View full text Add to dashboard Cite

Prevalence and topographical characteristics of keratoconus in patients with refractive errors in the Egyptian delta

Abstract: Keratoconus was found in 1.12% of patients seeking refractive surgery, with no gender preference. Most cases had bilateral affection. Astigmatism was the most common refractive error to be associated with keratoconus.

Cited by 16 publications

References 23 publications

<p>Prevalence of Subclinical Keratoconus Among Pediatric Egyptian Population with Astigmatism</p>

<p>Prevalence of Subclinical Keratoconus Among Pediatric Egyptian Population with Astigmatism</p>

Keratoconus in Africa: A systematic review and meta‐analysis

Características clínico-epidemiológicas del queratocono en Asturias

Contact Info

Product

Resources

About