Type of Article:  Original Research

Volume 6; Issue 2.3 (June 2018)

Page No.: 5346-5350

DOI: https://dx.doi.org/10.16965/ijar.2018.204


Jagriti Agrawal *1,  Pawan Kumar N 2, Pradep Jain 3.

*1 Department Of Anatomy, Pt.J.N.M Medical College, Raipur Chhattisgarh, India.

2 Department Of Anatomy, Pt.J.N.M Medical College, Raipur Chhattisgarh, India.

3 Department Of Anatomy, Pt.J.N.M Medical College, Raipur Chhattisgarh, India.

Address for Correspondence: Dr. Jagriti Agrawal,  Associate Professor, Department Of Anatomy, Pt.J.N.M Medical College, Raipur Chhattisgarh, India. E-Mail: jagritiagrawal28@gmail.com


Background: Global advances in ophthalmology have created a greater need for ocular parameters in different clinical and diagnostic fields. One important ophthalmic parameter is the curvature of cornea which is commonly needed for intraocular lens power calculation before cataract and refractive surgery and helps ophthalmologists in contact lens fitting, diagnosis of several eye conditions such as keratoconus, keratoglobus and Marfan’s syndrome.

Subjects and Methods: The data for the study were retrospectively collected from the case files of patients who had undergone cataract surgery from January 2017 to July 2017 in a private eye hospital Raipur, Chhattisgarh. The data collected were horizontal & Vertical curvature of cornea which was done by manual keratometer for calculating intraocular lens power (after applying various formulas) to be implanted during cataract surgery. Then by using various statistical methods the results were interpreted.

Results: The total number of patients taken for the study were 600 and the total number of eyes were 600, out of which 300 (50%) were males and 300 (50%) females, with the age ranging from 45 to 80 years. The mean corneal refractive power for the total sample were K1 (vertically) 44.18±1.89D, K2 (horizontally) 44.74± 1.88D, ranges from 39 D to 51 D. Although corneal refractive power was slightly higher in female as compared to male but the difference was not significant. The values were almost similar in right and left eyes.

Conclusion: The analysis might provide normative data for curvature of cornea required for IOL calculation in cataract patients of Chhattisgarh region. Data of the range will be useful as reference values in case the surgery is to be done at high volumes in surgical camps in rural areas where biometry equipment may not be available. There were no significant differences noted between male and female, right and left eyes in central Indian population.

Key words: Keratometry, Intraocular Lens Power, Cataract, Keratoconus, Keratoglobus, Marfan’s Syndrome.


  1. Ruskell Gl, Bergmanson Jpg. Anatomy and physiology of the cornea and related structures. In: phillip aj, speedwell l, eds. Contact lenses. 5th ed. Oxford: butterworth-heinemann, 2006.
  2. Duke-Elder, S.,1970, system of ophthal., alway, 5, 240 henry kimmpton, london,
  3. Mashige. a review of corneal diameter, curvature and thickness values and influencing factors. african vision and eye health; south african optometrist: 2013;72(4):185-194. Doi: 10.4102/aveh.v72i4.58
  4. Wojciechowski R, Congdon N, Anninger W, Teo Broman A. Age, Gender, Biometry, refractive error, and the anterior chamber angle among alaskan eskimos. Ophthalmology 2003;110:365-75.
  5. Kanski jj. Clinical ophthalmology, a systemic approach, 5th Edinburgh: butterworth- heinemann, 2003.
  6. Seitz B, Langenbucher A, Zagrada D, Budde W, Kus Mm. Corneal dimensions in patients with various types of corneal dystrophies and their impact on penetrating keratoplasty. Klin monatsbl angenheilkd 2000;217:152-158.
  7. Denniston Ako, Murray Pi. Oxford handbook of ophthalmology (oup), 2nd ed. Oxford: oxford university press, 2009.
  8. Fam Hb,Lim Kl. Meridional analysis for calculating the expected spherocylindrical refraction in eyes with toric intraocular lenses, j cataract refract surg. 2007 dec;33(12):2072-6.
  9. Heur M, Costin B, Crowe S, Grimm RA, Moran R, Svensson LG, Traboulsi EI. The value of keratometry and central corneal thickness measurements in the clinical diagnosis of Marfan syndrome. American journal of ophthalmology. 2008 Jun 1;145(6):997-1001.
  10. Nizamani Nb, Surhio Sa, Memon S, Talpur Ki. Axial length variability in cataract surgery. Journal of the college of physicians and surgeons pakistan. 2014;24(12):918-921.
  11. Nangia V, Jonas Jb, Sinha A, Matin A, Kalkarni M, Panda-Jonas S. Ocular axial length and its associations in an adult population of central rural india: the central india eye and medical study. Ophthalmology 2010;117(7):1360-66.
  12. Mustafa Abdul Hameed Ismail, Sabeen Chaudhry. keratometry, axial length and intra-ocular lens power variations observed during biometryisra medical journal 2015;7(3).
  13. Rashid H, Naseem A, Rahman F. Two years review of intraocular lens power calculation in ophthalmology department of saidu teaching hospital, swat. Pak j Ophthalmol 2007;23(3):122-25.
  14. Shristi Shrestha, Khem Raj Kaini, Binamra Basnet. Gender differences in ocular biometry among cataract patients of western Nepal. american journal of public health research, 2015;3(4a):31-34.
  15. Lam, C.S.Y. & Loran, D.F.C. Designing contact lenses for oriental eyes. J br contact lenses assoc. 1991;14(3):109-114.
  16. Saleem M, Khan Sb, Khattak Ma, Muhammad L. Analysis of intra ocular lens power estimation in patients admitted for cataract surgery. Gjms 2009;7(9): 22-26.
  17. Naz Ma. Review of 1100 cataract cases reported at the ophthalmic clinics in military hospital rawalpindi and combined military hospital lahore. Pak j ophthalmol 2004;20:143-7.
  18. Siahmed K, Muraine M, Brasseur G. Optic biometry in intraocular lense calculation for cataract Surgery, comparison with usual methods. J fr ophthalmol 2001;24:922-6.
  19. Asif Iqbal, Muhammad Idrees, Bilal Bashir, Mubashir Rehman, Omer Khan Orakzai. Biometric assessment and intraocular lenspower calculation in adults. J med. Sci. (peshawar, print) july 2014;22(3):126-128.

Cite this article: Jagriti Agrawal, Pawan Kumar N, Pradep Jain. ANTHROPOMETRIC MEASUREMENT OF CORNEAL CURVATURE BY KERATOMETRY IN ADULT CENTRAL INDIAN POPULATION. Int J Anat Res 2018;6(2.3):5346-5350. DOI: 10.16965/ijar.2018.204