Abstract
Purpose. To evaluate retrospectively the effectiveness of astigmatism correction in eyes treated with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK). Methods. Patients with low to moderate myopia with astigmatism ranging from +0.25 to +4.50 diopters were included in the study. PRK was performed on 62 eyes and LASIK on 70 eyes. Six-month data were analyzed with regard to astigmatism power, astigmatism axis, spherical equivalent, uncorrected visual acuity, vector astigmatism change, and topographic corneal regularity. Results. Mean astigmatism magnitude change was 0.54 ± 0.76 in PRK-treated eyes and 0.60 ± 0.67 in LASIK-treated eyes (61% versus 64% change, respectively, p = 0.61) at 6 months after surgery. Mean spherical correction change was -2.79 ± 1.51 for PRK and -2.90 ± 1.03 for LASIK (p = 0.63). Mean spherical equivalent change was -2.5 ± 1.57 for PRK and -2.6 ± 1.23 for LASIK (p = 0.73). Mean change in astigmatism axis was 20.8 ± 73.1 for PRK and 33.8 ± 81.7 for LASIK (p = 0.34). Mean change in uncorrected visual acuity (LogMar) was 0.84 ± 0.26 for PRK and 0.89 ± 0.23 for LASIK (p = 0.21). Mean vector-corrected astigmatism change was 0.88 ± 0.66 for PRK and 0.95 ± 0.59 for LASIK (p = 0.51). Mean vector-corrected astigmatism axis for PRK was 86.9 ± 59° and for LASIK 83.8 ± -47.6° (p = 0.75). Conclusion. There was no significant difference in astigmatism correction between PRK and LASIK at 6 months after surgery.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 385-387 |
| Number of pages | 3 |
| Journal | Cornea |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2001 |
| Externally published | Yes |
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Keywords
- Astigmatism
- Laser in situ keratomileusis (LASIK)
- Myopia
- Photorefractive keratectomy (PRK)
ASJC Scopus subject areas
- Ophthalmology
Cite this
Laser in situ keratomileusis versus photorefractive keratectomy in the correction of myopic astigmatism. / Fraunfelder, Frederick W.; Wilson, Steven E.
In: Cornea, Vol. 20, No. 4, 2001, p. 385-387.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Laser in situ keratomileusis versus photorefractive keratectomy in the correction of myopic astigmatism
AU - Fraunfelder, Frederick W.
AU - Wilson, Steven E.
PY - 2001
Y1 - 2001
N2 - Purpose. To evaluate retrospectively the effectiveness of astigmatism correction in eyes treated with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK). Methods. Patients with low to moderate myopia with astigmatism ranging from +0.25 to +4.50 diopters were included in the study. PRK was performed on 62 eyes and LASIK on 70 eyes. Six-month data were analyzed with regard to astigmatism power, astigmatism axis, spherical equivalent, uncorrected visual acuity, vector astigmatism change, and topographic corneal regularity. Results. Mean astigmatism magnitude change was 0.54 ± 0.76 in PRK-treated eyes and 0.60 ± 0.67 in LASIK-treated eyes (61% versus 64% change, respectively, p = 0.61) at 6 months after surgery. Mean spherical correction change was -2.79 ± 1.51 for PRK and -2.90 ± 1.03 for LASIK (p = 0.63). Mean spherical equivalent change was -2.5 ± 1.57 for PRK and -2.6 ± 1.23 for LASIK (p = 0.73). Mean change in astigmatism axis was 20.8 ± 73.1 for PRK and 33.8 ± 81.7 for LASIK (p = 0.34). Mean change in uncorrected visual acuity (LogMar) was 0.84 ± 0.26 for PRK and 0.89 ± 0.23 for LASIK (p = 0.21). Mean vector-corrected astigmatism change was 0.88 ± 0.66 for PRK and 0.95 ± 0.59 for LASIK (p = 0.51). Mean vector-corrected astigmatism axis for PRK was 86.9 ± 59° and for LASIK 83.8 ± -47.6° (p = 0.75). Conclusion. There was no significant difference in astigmatism correction between PRK and LASIK at 6 months after surgery.
AB - Purpose. To evaluate retrospectively the effectiveness of astigmatism correction in eyes treated with laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK). Methods. Patients with low to moderate myopia with astigmatism ranging from +0.25 to +4.50 diopters were included in the study. PRK was performed on 62 eyes and LASIK on 70 eyes. Six-month data were analyzed with regard to astigmatism power, astigmatism axis, spherical equivalent, uncorrected visual acuity, vector astigmatism change, and topographic corneal regularity. Results. Mean astigmatism magnitude change was 0.54 ± 0.76 in PRK-treated eyes and 0.60 ± 0.67 in LASIK-treated eyes (61% versus 64% change, respectively, p = 0.61) at 6 months after surgery. Mean spherical correction change was -2.79 ± 1.51 for PRK and -2.90 ± 1.03 for LASIK (p = 0.63). Mean spherical equivalent change was -2.5 ± 1.57 for PRK and -2.6 ± 1.23 for LASIK (p = 0.73). Mean change in astigmatism axis was 20.8 ± 73.1 for PRK and 33.8 ± 81.7 for LASIK (p = 0.34). Mean change in uncorrected visual acuity (LogMar) was 0.84 ± 0.26 for PRK and 0.89 ± 0.23 for LASIK (p = 0.21). Mean vector-corrected astigmatism change was 0.88 ± 0.66 for PRK and 0.95 ± 0.59 for LASIK (p = 0.51). Mean vector-corrected astigmatism axis for PRK was 86.9 ± 59° and for LASIK 83.8 ± -47.6° (p = 0.75). Conclusion. There was no significant difference in astigmatism correction between PRK and LASIK at 6 months after surgery.
KW - Astigmatism
KW - Laser in situ keratomileusis (LASIK)
KW - Myopia
KW - Photorefractive keratectomy (PRK)
UR - http://www.scopus.com/inward/record.url?scp=0035040171&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035040171&partnerID=8YFLogxK
U2 - 10.1097/00003226-200105000-00009
DO - 10.1097/00003226-200105000-00009
M3 - Article
C2 - 11333325
AN - SCOPUS:0035040171
VL - 20
SP - 385
EP - 387
JO - Cornea
JF - Cornea
SN - 0277-3740
IS - 4
ER -