SavedAdd your journal

Journals / Türk Oftalmoloji Dergisi / 2017 / Cilt: 47 - Sayı: 5

Topography and Higher Order Corneal Aberrations of the Fellow Eye in Unilateral Keratoconus

Banu AÇIKALIN
Sevda KURNA
Sezen AKKAYA
Tomris ŞENGÖR
Yelda ÖZKURT
Sibel AKSOY
Pages
249–254
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Comparison of quantitative topographic indices between the groups showed that all indicesexcept the I-S ratio were significantly higher in the normal group than in the control group (p

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Objectives: Comparison of topography and corneal higher order aberrations (HOA) data of fellow normal eyes of unilateral keratoconuspatients with keratoconus eyes and control group.Materials and Methods: The records of 196 patients with keratoconus were reviewed.
📊
Key Findings & Data:For statistical analysis, flat and steep keratometryvalues, average corneal power, cylindrical power, surface regularity index (SRI), surface asymmetry index (SAI), inferior-superior ratio(I-S), keratoconus prediction index, and elevation-depression power (EDP) and diameter (EDD) topography indices were selected.Results: Mean age of the unilateral keratoconus patients was 26.05±4.73 years and that of the control group was 23.6±8.53 years(p>0.05).
💡
Conclusion & Impact:Comparison of quantitative topographic indices between the groups showed that all indicesexcept the I-S ratio were significantly higher in the normal group than in the control group (p
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: Comparison of topography and corneal higher order aberrations (HOA) data of fellow normal eyes of unilateral keratoconuspatients with keratoconus eyes and control group.Materials and Methods: The records of 196 patients with keratoconus were reviewed. Twenty patients were identified as unilateralkeratoconus. The best corrected visual acuity (BCVA), topography and aberration data of the unilateral keratoconus patients’ normal eyeswere compared with their contralateral keratoconus eyes and with control group eyes. For statistical analysis, flat and steep keratometryvalues, average corneal power, cylindrical power, surface regularity index (SRI), surface asymmetry index (SAI), inferior-superior ratio(I-S), keratoconus prediction index, and elevation-depression power (EDP) and diameter (EDD) topography indices were selected.Results: Mean age of the unilateral keratoconus patients was 26.05±4.73 years and that of the control group was 23.6±8.53 years(p>0.05). There was no statistical difference in BCVA between normal and control eyes (p=0.108), whereas BCVA values were significantlylower in eyes with keratoconus (p=0.001). Comparison of quantitative topographic indices between the groups showed that all indicesexcept the I-S ratio were significantly higher in the normal group than in the control group (p

🔖

Cite This Article

AÇIKALIN, B., KURNA, S., AKKAYA, S., ŞENGÖR, T., ÖZKURT, Y., AKSOY, S. (2022). Topography and Higher Order Corneal Aberrations of the Fellow Eye in Unilateral Keratoconus. Türk Oftalmoloji Dergisi, Cilt: 47 - Sayı: 5, 249–254. https://ajindex.com/articles/637824

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. Faik Oruçoğlu. Unilateral keratokonuslarda insidans ve tomografik değerlendirme. Turk J Ophthalmol. 2013;43:83-86.
  2. Bühren J, Kook D, Yoon G, Kohnen T. Detection of subclinical keratoconus by using corneal anterior and posterior surface aberrations and thickness spatial profiles. Invest Ophthalmol Vis Sci. 2010;51:3424-3432.
  3. Schlegel Z, Lteif Y, Bains HS, Gatinel D. Total, corneal, and internal ocular optical aberrations in patients with keratoconus. J Refract Surg. 2009;25(10 Suppl):951-957.
  4. Jafri B, Li X, Yang H, Rabinowitz YS. Higher order wavefront aberrations and topography in early and suspected keratoconus. J Refract Surg. 2007;23:774- 781. Barbero S, Marcos S, Merayo Lloves J, Moreno-Barriuso E. Validation of the estimation of corneal aberrations from videokeratography in keratoconus. J Refract Surg. 2002;18:263-270.
  5. Alio JL, Shabayek MH. Corneal higher order aberrations: a method to grade keratoconus. J Refract Surg. 2006;22:539-545.
  6. Rao SN, Raviv T, Majmudar PA, Epstein RJ. Role of Orbscan II in screening keratoconus suspects before refractive corneal surgery. Ophthalmology. 2002;109:1642-1646.
  7. Auffarth GU, Wang L, Volcker HE. Keratoconus evaluation using the Orbscan Topography System. J Cataract Refract Surg. 2000;26:222-228.
  8. Carvalho MQ, Viteri E, Salgado-Borges J, Oliveira C, Ambrosio R. “Corneal tomographic study of contralateral normal eyes of patients with very asymmetric keratoconus,” paper presented at the ASCRS Symposium on Cataract, IOL and Refractive Surgery. Chicago, IL, USA; April 2008.
  9. Uçakhan ÖÖ, Cetinkor V, Özkan M, Kanpolat A. Evaluation of Scheimpflug imaging parameters in subclinical keratoconus, keratoconus, and normal eyes. J Cataract Refract Surg. 2011;37:1116-1124.
  10. Wilson SE, Klyce SD. Advances in the analysis of corneal topography. Surv Ophthalmol. 1991;35:269-277.
  11. Rabinowitz YS, Li X, Canedo ALC, Ambrosio R Jr, Bykhovskaya Y. Optical coherence tomography combined with videokeratography to differentiate mild keratoconus subtypes. J Refract Surg. 2014;30:80-87.
  12. Tummanapalli SS, Potluri H, Vaddavalli PK, Sangwan VS. Efficacy of axial and tangential corneal topography maps in detecting subclinical keratoconus. J Cataract Refract Surg. 2015;41:2205-2214.
  13. Rabinowitz YS, McDonnell PJ. Computer-assisted corneal topography in keratoconus. Refract Corneal Surg. 1989;6:400-408.
  14. Gordon-Shaag A, Millodot M, Ifrah R, Shneor E. Aberrations and topography in normal, keratoconus-suspect, and keratoconic eyes. Optom Vis Sci. 2012;89:411-418