The relationship between central corneal thickness and corneal curvature in adult Nigerians

Iyamu, Eghosasere; Eze, N. M.

doi:10.4102/aveh.v70i1.89

Cited by 6 publications

(13 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 The average corneal curvature and power of young undergraduates students with high myopia in our study was significantly different (P=0.0001) from the normal average value recorded for emmetropes from previous studies, which was about 7.85mm that is in myopes the corneal curvature was found to be relatively decreased. 1,12,13 We found in our study that female students with high myopia had shorter mean average corneal curvature, similar to Li et al, but females without refractive errors had slightly higher mean average corneal curvature than males in another study. 13,14 A result similar to a study done by Iyamu and Osuobeni were they found that age and gender did not affect corneal curvature in emmetropes, however we only found a significant effect with gender on the corneal curvature of the young undergraduates with high myopia.…”

Section: Discussionsupporting

confidence: 90%

Corneal curvature in young high myopic undergraduates in southern Nigeria

Okukpon¹,

Ojo²

2018

Int J Res Med Sci

View full text Add to dashboard Cite

Background: Corneal curvature is important for contact lens fitting and management, ocular aberration analysis, corneal refractive surgery as well as diagnoses and management of corneal pathological conditions such as keratoconus and it is also an important biometric factor affecting refractive errors, myopia inclusive.Methods: This was an observational cross-sectional study conducted at the Optometry Teaching Clinic, Department of Optometry, University of Benin, Benin City, Edo State, Nigeria. Two hundred and twenty myopic eyes of 113 (54 males, 59 females) undergraduates students, between 16 and 25 years with myopia of -5.00 to -20.50 participated in this study. Non-cycloplegic refraction was done by retinoscopic measurement and spherical equivalent refraction (SER) of the eyes was calculated. The corneal curvature was determined with a Bausch and Lomb one position Keratometer (Bausch and Lomb Corp., USA).Results: The mean age, spherical equivalent, corneal curvature and corneal power were 20.44±2.24 years, ̶7.12±3.14DS, 7.72±0.26mm and 43.77±1.48D respectively. Most of the students had a myopia of -5.75 to -10.50DS (46.8%) and a corneal curvature of 7.61-7.90mm (46.82%). There was a difference between the corneal curvature of males and females (P=0.0001). A relationship was also found with gender and corneal curvature (P=0.001).Conclusions: This study found that high myopic females had shorter corneal curvature, with greater corneal powers than their males counterparts (P<0.01). We also found that gender had a significant relationship with the corneal curvature unlike age and the spherical equivalent which showed no relationship (P>0.01).

show abstract

Section: Discussionsupporting

confidence: 90%

Corneal curvature in young high myopic undergraduates in southern Nigeria

Okukpon¹,

Ojo²

2018

Int J Res Med Sci

View full text Add to dashboard Cite

show abstract

“…Significant alterations in CCT may interfere with accurate measurement of intraocular pressure (IOP), and underestimation of IOP due to corneal thinning has the potential to delay diagnosis and treatment of glaucoma. Corneal thickness provides valuable information about possible changes in the cornea due to disease, trauma, or hypoxia [ 27 ]. Therefore, evaluation of corneal thickness is essential in a wide range of ocular disorders such as glaucoma, keratoconus, corneal refractive surgery, dry eye, and atopic keratoconjunctivitis [ 15 , 16 ].…”

Section: Discussionmentioning

confidence: 99%

Central Corneal Thickness in Patients with Atopic Keratoconjunctivitis

Ondas¹,

Keleş

2014

Med Sci Monit

View full text Add to dashboard Cite

Background The aim of this study was to evaluate central corneal thickness in patients with atopic keratoconjunctivitis. Material/Methods The study was conducted in the Atatürk University School of Medicine between April 2011 and June 2013. The study group included 60 eyes of 30 patients with atopic keratoconjunctivitis. Sixty eyes of 30 healthy individuals without any ophthalmic or systemic pathology were used as a control group. The central corneal thickness was measured with ultrasonic pachymetry. Results In each group, all subjects included in the study had a best corrected visual acuity (BCVA) of 20/25 or better. In the study group past medical histories revealed eczema in 19 patients, asthma in 16, and atopic dermatitis in 15. During clinical examination cicatricial conjunctivitis was noted in 5 patients, giant papillae in 4, symblepharon in 2, and entropion in 2. The mean central corneal thickness was 523.45±18.03 μm in the study group (mean age: 37.05±5.7 years) and 540.30±38.91 μm in the control group (mean age: 36.55±7.1 years), and the difference was statistically significant (p<0.001). Conclusions Evaluation of corneal thickness is important in situations such as corneal refractive surgery and contact lens use, and is an essential parameter in a wide range of ocular disorders, including glaucoma and keratoconus. Therefore, ophthalmologists should be aware of the low central corneal thickness in patients with atopic keratoconjunctivitis.

show abstract

“…Table 1 shows the various studies that have investigated and reported on CCT measurements in normal African subpopulations. 31,32,35,54,55,56,57,58,59,60,61,62 Half of the studies (n = 6) have been undertaken in West-Africa (Nigeria). The instrument used to measure CCT is an important consideration when mean CCT measurements are compared across different studies.…”

Section: African Studies On Central Corneal Thicknessmentioning

confidence: 99%

A review of African studies on central corneal thickness

Rampersad

Hansraj

2016

African Vision and Eye Health

View full text Add to dashboard Cite

Recently, there has been increasing interest in understanding central corneal thickness (CCT) measurements in various populations. This may be related to the influence of CCT in the diagnosis, classification and management of glaucoma. In addition, CCT measurements are also important for monitoring corneal diseases and contact lens wear, indicating the overall health of the cornea and assessing eligibility for refractive surgery. This article reviews studies that have reported CCT measurements in non-glaucomatous African sub-populations. The CCT measurements, gender associations and limitations of these studies are highlighted. The findings of these studies and their implications are discussed in relation to global studies reporting on CCT measurements.

show abstract

The relationship between central corneal thickness and corneal curvature in adult Nigerians

Cited by 6 publications

References 12 publications

Corneal curvature in young high myopic undergraduates in southern Nigeria

Corneal curvature in young high myopic undergraduates in southern Nigeria

Central Corneal Thickness in Patients with Atopic Keratoconjunctivitis

A review of African studies on central corneal thickness

Contact Info

Product

Resources

About