Age, gender, corneal diameter, corneal curvature and central corneal thickness in Nigerians with normal intra ocular pressure

Background: Intra Ocular Pressure (IOP) is an important parameter for the detection and monitoring of glaucoma. Central corneal thickness (CCT) can influence the IOP estimated with Goldmann tonometry. A thick cornea overestimates the IOP and thin underestimates it. So, decreased CCT may lead to underdiagnosis and undertreatment of glaucoma and increased CCT may lead to overdiagnosis and overtreatment of glaucoma. The aim of the study is to identify the factors affecting the CCT in Nepalese population. Methods: A hospital based cross-sectional study which enrolled 152 subjects from period of January 2009 to May 2010. All subjects underwent ophthalmological examinations. CCT was measured with ultrasonic pachymeter and intraocular pressure was measured with Goldmann applanation tonometer. Results: The mean±SD CCT of right and left eye was 538±32 and 540±30μm respectively. CCT decreased with increasing age. Age and intra ocular pressure was significantly correlated with CCT. There was no significant correlation of gender and ethnicity with CCT. Conclusion: CCT decreased with increasing age. CCT was significantly correlated with age and intra ocular pressure but not with gender and ethnicity. Keywords: Nepalese; central corneal thickness; ultrasound pachymeter DOI: http://dx.doi.org/10.3126/njms.v1i1.5788 Nepal Journal of Medical Sciences. 2012; 1(1): 7-10.

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Central corneal thickness, keratometry and intra ocular pressure measurement in a case control comparative study between pseudoexfoliative (PXF) to non pseudoexfoliative cataract patients

MedPulse International Journal of Ophthalmology ◽

10.26611/10091511 ◽

2020 ◽

Vol 15 (1) ◽

pp. 01-04

Author(s):

Manoj Kumar ◽

Keyword(s):

Comparative Study ◽

Pressure Measurement ◽

Central Corneal Thickness ◽

Corneal Thickness ◽

Case Control ◽

Intra Ocular Pressure ◽

Ocular Pressure ◽

Cataract Patients

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INTRA OCULAR PRESSURE

The Professional Medical Journal ◽

10.29309/tpmj/18.4805 ◽

2018 ◽

Vol 25 (12) ◽

pp. 1833-1839

Author(s):

Arsalan Ahmed Rajput ◽

Azfar Ahmed Mirza ◽

Ghazi Khan Maree ◽

Adil Ali Shaikh

Keyword(s):

Intraocular Pressure ◽

Central Corneal Thickness ◽

Corneal Thickness ◽

P Value ◽

Strong Positive Correlation ◽

Positive Correlation ◽

Intra Ocular Pressure ◽

Department Of Ophthalmology ◽

Ocular Pressure ◽

The Mean

Introduction: The ideal optical properties of the eye requires support of state of the eye-ball which is normally regulated by the intraocular pressure (IOP). There is variation in the measurements of IOP with Goldmann applanation tonometry if the thickness of the central cornea is not uniform, the IOP is high when cornea is thicker and vice versa. Therefore, the central corneal thickness (CCT) is thought to affect the IOP readings, however, as shown, the evidence available remains controversial. The aim of the study was to determine correlation between CCT and IOP. Objectives: To determine the correlation between the Central Corneal Thickness (CCT) and Intra Ocular Pressure (IOP). Study Design: A cross-sectional study. Placeand Duration: Department of Ophthalmology, Aga Khan University Hospital, Karachi from July to December, 2014. Methodology: During the study period of six months total 431 participants were purposively sampled according to the set criteria. Variables included were age, gender, CCT, and IOP. Correlation between IOP and CCT was assessed by using Pearson correlation test, P value of < 0.05 was considered significant. Results: Out of 431 participants, 239 (55.5%) males and 192 (44.5%) females. The mean age was 34.9 ranging from 20 to 50 years. The mean central corneal thickness of right eye was 529 μm with SD ± 39.5 and range of 473-591 μm. The mean intraocular pressure of right eye was 14.7 μm, SD ± 3.1 with a range of 9-21 mmHg. The left eye mean central corneal thickness was 533, SD ± 29.6 with range of 481-589 μm. The mean intraocular pressure of left eye was 15.6, SD ± 3.1 with a range of 10-21 mmHg. Strong positive correlation was found (P-value < 0.001) between central corneal thickness andintra ocular pressure for both eyes. Conclusion: There is positive correlation between CCT and IOP. Therefore, along with the routine ophthalmic examination for intraocular pressure measurements pachymetry should also be considered for accurate interpretation of the results.

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