Details
Category: Volume 06 Issue 10 October 2018
Hits: 1883

Title: A Study of Refractive Errors in Pseudophakia

Authors: A. Sumathi, P .Mishra, S. Manavalan, V. Sridevi, M. Ramya

 DOI: https://dx.doi.org/10.18535/jmscr/v6i10.206

Abstract

Background: Cataract is the most prevalent, treatable cause of visual impairment and blindness in the world. Cataract surgery with an intraocular lens (IOL) implant is one of the most common and thought to be the most effective surgical procedure in any field of medicine. Very few studies had documented the refractive error in a pseudophaki patients.

Objectives: To find out the pattern of refractive error among the pseudophakic patients.

Material and Methods: Its descriptive hospital based study done among 100 psudophakic patients attending the department of ophthalmology 6 weeks after the cataract surgery between Oct 2017 and Oct 2018.

Results: 80% of the study participants were between 60 to 80 years. 51% of the study participants were males. 81% had undergone Manual SICS and 24% had uncorrected visual acuity of 6/18, 22% had 6/12 and 21% had 6/9.Residual spherical refractive error in pseudophakics ranges from -3 to 1 DSP. Most of the study particpants’ spherical refractive error falls between -0.5 to + 0.5 (84%). Post-Operative near Vision Accommodation needs to be corrected with +2.5 for monofocal IOLS. The residual post-operative astigamatism was more frequently an against-the-rule Astigmatism, ie, -0.5 to -1.00 at 90 DCP.

Conclusion: The psududophakic patients using monofocal IOLs and undergoing manual small incision cataract surgery are having less refractive correction and against the rule astigmatism is produced due to corneo scleral scarring. The near vision correction is to be done for all the patients who are using monofocal IOLs.

Keywords: Pseudophakia, refractive error, astigmatism.

References

  1. Lam D, Rao SK, Ratra V, Liu Y, Mitchell P, King J, et al. Cataract. Nat Rev Dis Prim. 2015;1(June).
  2. Thompson J, Lakhani N. Cataracts. Prim Care - Clin Off Pract. 2015;42(3):409–23.
  3. Riley AF, Malik TY, Grupcheva CN, Fisk MJ, Craig JP, McGhee CN. The Auckland cataract study: Co-morbidity, surgical techniques, and clinical outcomes a public hospital service. Br J Ophthalmol. 2002;86(2):185–90.
  4. Bourne R, Dineen B, Jadoon Z, Lee PS, Khan A, Johnson GJ, et al. Outcomes of cataract surgery in Pakistan: Results from the Pakistan National Blindness and Visual Impairment Survey. Br J Ophthalmol. 2007;91(4):420–6.
  5. Lau J. Visual acuity and quality of life outcomes in cataract surgery patients in Hong Kong. Br J Ophthalmol [Internet]. 2002;86(1):12–7. Available from: http://bjo.bmj.com/cgi/doi/10.1136/bjo.86.1.12
  6. Farmer L, Innes-Wong C, Bergman-Hart C, Casson RJ, Crompton J. Visual Acuity, Quality of Life and Visual Function Outcomes after Cataract Surgery in Bali. Ophthalmic Epidemiol. 2015;22(4):274–82.
  7. Alió J, Rodríguez-Prats JL, Galal A, Ramzy M. Outcomes of microincision cataract surgery versus coaxial phacoemulsification. Ophthalmology. 2005;112(11):1997–2003.
  8. Zhao J, Ellwein LB, Cui H, Ge J, Guan H, Lv J, et al. Prevalence and outcomes of cataract surgery in rural China: The China nine-province survey. Ophthalmology [Internet]. 2010;117(11):2120–8. Available from: http://dx.doi.org/10.1016/j.ophtha.2010.03.005
  9. He M, Xu J, Li S, Wu K, Munoz SR, Ellwein LB. Visual acuity and quality of life in patients with cataract in Doumen County, China. Ophthalmology. 1999;106(8):1609–15.
  10. Shah S, Peris-Martinez C, Reinhard T, Vinciguerra P. Visual Outcomes After Cataract Surgery: Multifocal Versus Monofocal Intraocular Lenses. J Refract Surg [Internet]. 2015;31(10):658–66. Available from: http://www.healio.com/doiresolver?doi=10.3928/1081597X-20150611-01

Corresponding Author

Dr P. Mishra M.S. (Ophth), PhD (Ophth)

Head of the Department, Department of Ophthalmology, Rajah Muthiah Medical College,

Annamalai University