Open Access Research Article

Analysis of Ocular Axial Length and Anterior Chamber Depth in Port Harcourt, Nigeria

IN Aprioku1 and CS Ejimadu2*

1Department of ophthalmology, Rivers State University, Nigeria

2Department of Ophthalmology, University of Port Harcourt, Nigeria

Corresponding Author

Received Date: July 16, 2019;  Published Date: August 06, 2019


Aim: To determine the relationship between Ocular axial length (AL) and anterior chamber depth (ACD) in a normal population in Port Harcourt City Local Government Area (LGA).

Method: This was a multistage random sampling community based descriptive study carried out in Port Harcourt City LGA. The inclusion criteria were Visual Acuity > 6/18, age greater than 18 years with no history of past ocular surgeries or trauma. Data obtained through an interviewer administered structured proforma included age, sex, tribe, occupation and level of education. Ocular examinations done included visual acuity, applanation tonometry, and ophthalmoscopy. Axial length (AL) and Anterior Chamber Depth (ACD) were measured using Amplitude (A) scan ultrasonography (SONOMED PACSCAN 300AP). Data were analyzed using SPSS (Version 17), and p value was set at ≤ 0.05.

Results: Four hundred and sixty-six (466) subjects participated in the study made up of two hundred and twelve (212) males (45.5%) and two hundred and fifty-four (254) females (54.5%) with M: F ratio of 1:1.2. The age range was 18-92 years and mean age of the subjects studied 43.0±14.2 years. Findings revealed mean AL and ACD to be 23.2±1.0mm and 3.1±0.5mm respectively. The mean AL and ACD were greater in males than females. There was no statistically significant relationship between age and axial length but there was a statistically significant relationship between age and ACD. Males had longer AL than females which was statistically significant. It was also noted that for every millimeter increase in AL, there was a 0.07mm rise in ACD in the general population. (r=0.253, p=0.000).

Conclusion: This study noted that for every millimeter increase in AL, there was a 0.07mm rise in ACD in the general population. (r=0.253, p=0.000) and the values are higher in males. This relationship may be used to derive simple mathematical formulae for use in keratometer and also add to the data bank for AL and ACD.

Keywords:Ocular; Axial; Length; Anterior; Chamber; Depth; Port; Harcourt

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