A Clinical Study on the Correlation Between Axial Length, Intraocular Pressure and Central Corneal Thickness in Myopic Eyes

Introduction: Myopia or short sightedness, is that form of refractive error wherein parallel rays of light come to a focus in front of the sentient layer of the retina when the eye is at rest; the eye is thus relatively too large, and the condition is the opposite to that of hypermetropia. Aims and objectives of the research were to find out whether there is a correlation between axial length, intraocular pressure and central corneal thickness in myopic eye and to find out whether the degree of myopia can be correlated with axial length, intraocular pressure and central corneal thickness in myopic eye. Material and Methods: A prospective study was conducted in Silchar Medical College and Hospital, Assam for 1 year. Total of 200 eyes of 100 myopic patients attending the Outpatient department of Ophthalmology were included in the study. Result: Overall mean (SD) myopic refractive error was found to be -4.41±3.23D with range of -1.00 D to -17.00 D. The overall mean axial length was 24.06±1.74 mm. The overall mean intra ocular pressure in the patient was found to be 15.50±2.00 mm of Hg with range of 12-20 mm Hg. The overall mean (SD) central corneal thickness in myopic eyes was found to be 0.509±0.026 mm. Conclusion: The effect of myopia on the axial length, the intraocular pressure and the corneal thickness are interrelated and are important determinants of myopia.