Fitting Gas Permeable Contact Lens in Keratoconus; Still a Challenge?
DOI:
https://doi.org/10.17140/OOJ-2-e004Keywords:
Keratoconus, topographersAbstract
Gas permeable (GP) contact lenses (CL) are of paramount importance in keratoconus patient management1
to rehabilitate vision and improve patients’ quality of life (QoL).2
Different surgical and non-surgical options are available in keratoconus management. Early
stages could be managed with conventional optical corrections (spectacles and/or soft CL),
however if disease progress, and corneal irregularity affects to visual acuity GP (conventional
or with keratoconus specific design) lenses should be necessaries to patients’ visual rehabilitation. Other alternative CL options (piggy-back, mini-scleral, semi-scleral, scleral designs etc.)
have been, also, proposed. If patients show CL intolerance or disease progresses and/or corneal
integrity could be affected surgical techniques are required.
References
Gomes JA, Tan D, Rapuano CJ, et al. Global consensus on keratoconus and ectatic diseases. Cornea. 2015; 34: 359-369. doi: 10.1097/ICO.0000000000000408
Ortiz-Toquero S, Perez S, De Juan V, Rodriguez G, Agustin Mayo-Iscar A, Martin R. The influence of the refractive correction on the vision-related quality of life in keratoconus patients. Qual Life Res. 2015; 25(4): 1043-1051. doi: 10.1007/s11136-015-1117-1
Sideroudi H, Labiris G, Georgatzoglou K, Ditzel F, Siganos C, Kozobolis V. Fourier analysis of videokeratography data: Clinical usefulness in grade I and subclinical keratoconus. J Cataract Refract Surg. 2016; 42: 731-737. doi: 10.1016/j.jcrs.2016.01.049
Piñero DP, Nieto JC, Lopez-Miguel A. Characterization of corneal structure in keratoconus. J Cataract Refract Surg. 2012; 38: 2167-2183. doi: 10.1016/j.jcrs.2012.10.022
Ortiz-Toquero S, Rodriguez G, de Juan V, Martin R. Repeatability of placido-based corneal topography in keratoconus. Optom Vis Sci. 2014; 91(12): 1467-1473. doi: 10.1097/OPX.0000000000000421
Gordon-Shaag A, Millodot M, Shneor E, Liu Y. The genetic and environmental factors for keratoconus. Biomed Res Int. 2015; 2015: 795738. doi: 10.1155/2015/795738
Amsler M. Kératocõne classique et kératocône fruste; arguments unitaires [In French]. Ophthalmologica. 1946; 111: 96-101.
Krumeich JH, Daniel J, Knülle A. Live-epikeratophakia for keratoconus. J Cataract Refract Surg. 1998; 24: 456-463. doi: 10.1016/S0886-3350(98)80284-8
McMahon TT, Szczotka-Flynn L, Barr JT, et al. A new method for grading the severity of keratoconus: The Keratoconus Seve-rity Score (KSS). Cornea. 2006; 25(7): 794-800. Web site. https://vrcc.wustl.edu/clekarchive/pdf/31%20McMahon%20-%20A%20 New%20Method.pdf. Accessed August 14, 2016
Ortiz-Toquero S, Rodriguez G, de Juan V, Martin R. Repeatability of wavefront aberration measurements with a placido-based topographer in normal and keratoconic eyes. J Refract Surg. 2016; 32: 338-344. doi: 10.3928/1081597X-20160121-04
Alió JL, Shabayek MH. Corneal higher order aberrations: A method to grade keratoconus. J Refract Surg. 2006; 22: 539-545. doi: 10.3928/1081-597X-20060601-05
Mandathara PS, Stapleton FJ, Willcox MD. Outcome of keratoconus management: Review of the past 20 years’ contemporary treatment modalities. Eye Contact Lens. 2016; 11. doi: 10.1097/ICL.0000000000000270
Sykakis E, Karim R, Evans JR, et al. Corneal collagen cross-linking for treating keratoconus. Cochrane Database Syst Rev. 2015; 24: CD010621. doi: 10.1002/14651858.CD010621.pub2
Meiri Z, Keren S, Rosenblatt A, Sarig T, Shenhav L, Varssano D. Efficacy of corneal collagen cross-linking for the treatment of Keratoconus: A systematic review and meta-analysis. Cornea. 2016; 35: 417-428. doi: 10.1097/ICO.0000000000000723
Arnalich-Montiel F, Alió del Barrio JL, Alió JL. Corneal surgery in keratoconus: Which type, which technique, which outcomes? Eye Vis (Lond). 2016; 3: 2. doi: 10.1186/s40662-016-0033-y
Keane M, Coster D, Ziaei M, Williams K. Deep anterior lamellar keratoplasty versus penetrating keratoplasty for treating kera-toconus. Cochrane Database Syst Rev. 2014; 22: CD009700. doi: 10.1002/14651858.CD009700.pub2
Poulsen DM, Kang JJ. Recent advances in the treatment of corneal ectasia with intrastromal corneal ring segments. Curr Opin Ophthalmol. 2015; 26: 273-277. doi: 10.1097/ICU.0000000000000163
Visser ES, Wisse RP, Soeters N, Imhof SM, Van der Lelij A. Objective and subjective evaluation of the performance of me-dical contact lenses fitted using a contact lens selection algorithm. Cont Lens Anterior Eye. 2016; 39(4): 298-306. doi: 10.1016/j. clae.2016.02.006
Zhou AJ, Kitamura K, Weissman BA. Contact lens care in keratoconus. Cont Lens Anterior Eye. 2003; 26: 171-174. doi: 10.1016/S1367-0484(03)00042-0
Mandathara PS, Fatima M, Taureen S, et al. GP contact lens fitting in keratoconus using FITSCAN technology. Cont Lens Ante-rior Eye. 2013; 36: 126-129. doi: 10.1016/j.clae.2012.12.002
Nosch DS, Ong GL, Mavrikakis I, et al. The application of a computerised videokeratography (CVK) based contact lens fitting software programme on irregularly shaped corneal surfaces. Cont Lens Anterior Eye. 2007; 30: 239-248. doi: 10.1016/j. clae.2007.06.003
Ortiz-Toquero S, Rodriguez G, De Juan V, Martin R. Rigid gas permeable contact lens fitting using new software in keratoconic eyes. Optom Vis Sci. 2016; 93: 286-292. doi: 10.1097/OPX.0000000000000804
Ortiz-Toquero S, Martin M, Rodriguez G, De Juan V, Martin R. Success of rigid gas permeable contact lens fitting. Eye Contact Lens. 2016; 13. doi: 10.1097/ICL.0000000000000254
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
All content published in The Ophthalmology (TOOJ) is licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0). This license allows anyone to copy, distribute, transmit, and adapt the work — including for commercial purposes — provided appropriate credit is given to the original author(s) and source.