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RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA.

Authors: JAGUN Omodele

Publication Type: Journal article

Journal: International Journal Of Advances In Medicine

ISSN Number:

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Abstract

Background: Aim of the study was to determine the relationship between axial length (AL), keratometry and central
corneal thickness (CCT), and refractive errors in adult patients attending the Guinness eye centre (GEC), Lagos
university teaching hospital (LUTH) Idi-Araba, Lagos.
Methods: A descriptive cross-sectional study conducted among consecutive patients aged 16 years and above with
refractive errors attending the GEC, LUTH. Ocular parameters measured included AL, anterior corneal curvature, CCT
and refractive errors. AL and keratometry were measured with IOL master and CCT with ultrasonic A scan pachymeter.
Refraction was done with auto-refractor-keratometer. Data analysis was done with statistical package for social science
(SPSS) 20.
Results: A total of 394 patients were studied, 157 males and 237 females. The age range was 16-65 years, mean -
37.9±13.3 years and median -36.5 years. There were more myopic patients 215 (54.6%) than hyper-metropes 179
(45.4%). The mean AL was 23.9±1.1 mm and eyes with longer AL were more likely to be myopic (r=-0.676, p<0.001);
to have flatter cornea (r=0.519, p<0.001) and thicker cornea (r=0.149, p=0.003). The mean CCT was 520.3±31.0 μm.
There was a weak negative correlation between CCT and refractive error (r=-0.111, p=0.027).
Conclusions: The mean CCT was lower than the mean CCT of other Nigerian studies. Hypermetropic patients were
more likely to have thinner corneas. This may lead to underestimation of intraocular pressure (IOP) in these patients.
Significant correlation was seen between AL and refractive error, CCT and keratometry. AL correlated with less
spherical equivalent refractive error, flatter and thicker cornea. It is therefore important to measure the CCT of all
patients going for refractive surgery to detect those at risk of developing corneal ectasia following refractive surgery.
Keywords: AL, Keratometry, CCT, Refractive error

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JAGUN,O. . (2021). RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. , 8 (11), 1657-1657.

JAGUN,O. . "RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. " 8, no (11), (2021): 1657-1657.

JAGUN,O. and . (2021). RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. , 8 (11), pp1657-1657.

JAGUNO, . RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. . 2021, 8 (11):1657-1657.

JAGUN,Omodele , . "RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. ", 8 . 11 (2021) : 1657-1657.

J.Omodele , "RELATIONSHIP BETWEEN AXIAL LENGTH , KERATOMETRY AND CENTRAL CORNEAL THICKNESS IN PATIENTS WITH REFRACTIVE ERRORS AT THE TEACHING HOSPITAL IN SOUTHWEST, NIGERIA. " vol.8, no.11, pp. 1657-1657, 2021.

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