Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery
Purpose. To validate clinically a new method for estimating the corneal power (Pc) using a variable keratometric index (nkadj) in eyes with previous laser refractive surgery. Setting. University of Alicante and Medimar International Hospital (Oftalmar), Alicante, (Spain). Design. Retrospective case...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
|
| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2015/824293 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832561509788549120 |
|---|---|
| author | Vicente J. Camps David P. Piñero Veronica Mateo Celia García Alberto Artola Rafael Pérez-Cambrodi Pedro Ruiz-Fortes |
| author_facet | Vicente J. Camps David P. Piñero Veronica Mateo Celia García Alberto Artola Rafael Pérez-Cambrodi Pedro Ruiz-Fortes |
| author_sort | Vicente J. Camps |
| collection | DOAJ |
| description | Purpose. To validate clinically a new method for estimating the corneal power (Pc) using a variable keratometric index (nkadj) in eyes with previous laser refractive surgery. Setting. University of Alicante and Medimar International Hospital (Oftalmar), Alicante, (Spain). Design. Retrospective case series. Methods. This retrospective study comprised 62 eyes of 62 patients that had undergone myopic LASIK surgery. An algorithm for the calculation of nkadj was used for the estimation of the adjusted keratometric corneal power (Pkadj). This value was compared with the classical keratometric corneal power (Pk), the True Net Power (TNP), and the Gaussian corneal power (PcGauss). Likewise, Pkadj was compared with other previously described methods. Results. Differences between PcGauss and Pc values obtained with all methods evaluated were statistically significant (p<0.01). Differences between Pkadj and PcGauss were in the limit of clinical significance (p<0.01, loA [−0.33,0.60] D). Differences between Pkadj and TNP were not statistically and clinically significant (p=0.319, loA [−0.50,0.44] D). Differences between Pkadj and previously described methods were statistically significant (p<0.01), except with PcHaigisL (p=0.09, loA [−0.37,0.29] D). Conclusion. The use of the adjusted keratometric index (nkadj) is a valid method to estimate the central corneal power in corneas with previous myopic laser refractive surgery, providing results comparable to PcHaigisL. |
| format | Article |
| id | doaj-art-89a22ba185ab43f4bcbdcbf8fdc039f7 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-89a22ba185ab43f4bcbdcbf8fdc039f72025-02-03T01:24:55ZengWileyJournal of Ophthalmology2090-004X2090-00582015-01-01201510.1155/2015/824293824293Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik SurgeryVicente J. Camps0David P. Piñero1Veronica Mateo2Celia García3Alberto Artola4Rafael Pérez-Cambrodi5Pedro Ruiz-Fortes6Department of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, SpainDepartment of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, SpainDepartment of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, SpainDepartment of Optics, Pharmacology and Anatomy, University of Alicante, 03690 San Vicente del Raspeig, SpainDepartment of Ophthalmology, Oftalmar, Medimar International Hospital, 03016 Alicante, SpainDepartment of Ophthalmology, Oftalmar, Medimar International Hospital, 03016 Alicante, SpainDepartment of Ophthalmology, Oftalmar, Medimar International Hospital, 03016 Alicante, SpainPurpose. To validate clinically a new method for estimating the corneal power (Pc) using a variable keratometric index (nkadj) in eyes with previous laser refractive surgery. Setting. University of Alicante and Medimar International Hospital (Oftalmar), Alicante, (Spain). Design. Retrospective case series. Methods. This retrospective study comprised 62 eyes of 62 patients that had undergone myopic LASIK surgery. An algorithm for the calculation of nkadj was used for the estimation of the adjusted keratometric corneal power (Pkadj). This value was compared with the classical keratometric corneal power (Pk), the True Net Power (TNP), and the Gaussian corneal power (PcGauss). Likewise, Pkadj was compared with other previously described methods. Results. Differences between PcGauss and Pc values obtained with all methods evaluated were statistically significant (p<0.01). Differences between Pkadj and PcGauss were in the limit of clinical significance (p<0.01, loA [−0.33,0.60] D). Differences between Pkadj and TNP were not statistically and clinically significant (p=0.319, loA [−0.50,0.44] D). Differences between Pkadj and previously described methods were statistically significant (p<0.01), except with PcHaigisL (p=0.09, loA [−0.37,0.29] D). Conclusion. The use of the adjusted keratometric index (nkadj) is a valid method to estimate the central corneal power in corneas with previous myopic laser refractive surgery, providing results comparable to PcHaigisL.http://dx.doi.org/10.1155/2015/824293 |
| spellingShingle | Vicente J. Camps David P. Piñero Veronica Mateo Celia García Alberto Artola Rafael Pérez-Cambrodi Pedro Ruiz-Fortes Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery Journal of Ophthalmology |
| title | Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery |
| title_full | Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery |
| title_fullStr | Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery |
| title_full_unstemmed | Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery |
| title_short | Clinical Validation of Adjusted Corneal Power in Patients with Previous Myopic Lasik Surgery |
| title_sort | clinical validation of adjusted corneal power in patients with previous myopic lasik surgery |
| url | http://dx.doi.org/10.1155/2015/824293 |
| work_keys_str_mv | AT vicentejcamps clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT davidppinero clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT veronicamateo clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT celiagarcia clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT albertoartola clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT rafaelperezcambrodi clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery AT pedroruizfortes clinicalvalidationofadjustedcornealpowerinpatientswithpreviousmyopiclasiksurgery |