Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery
Purpose. To evaluate influencing factors on the residual astigmatism after performing peripheral corneal relaxing incisions (PCRIs) during cataract surgery. Methods. This prospective study included patients who were scheduled for cataract surgery with PCRIs. Optical biometry (IOLMaster 500, Carl Zei...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
|
| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2015/706508 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550052296392704 |
|---|---|
| author | Nino Hirnschall Jörg Wiesinger Petra Draschl Oliver Findl |
| author_facet | Nino Hirnschall Jörg Wiesinger Petra Draschl Oliver Findl |
| author_sort | Nino Hirnschall |
| collection | DOAJ |
| description | Purpose. To evaluate influencing factors on the residual astigmatism after performing peripheral corneal relaxing incisions (PCRIs) during cataract surgery. Methods. This prospective study included patients who were scheduled for cataract surgery with PCRIs. Optical biometry (IOLMaster 500, Carl Zeiss Meditec AG, Germany) was taken preoperatively, 1 week, 4 months, and 1 year postoperatively. Additionally, corneal topography (Atlas model 9000, Carl Zeiss Meditec AG, Germany), ORA (Ocular Response Analyzer, Reichert Ophthalmic Instruments, USA), and autorefraction (Autorefractometer RM 8800 Topcon) were performed postoperatively. Results. Mean age of the study population n=74 was 73.5 years (±9.3; range: 53 to 90) and mean corneal astigmatism preoperatively was −1.82 D (±0.59; 1.00 to 4.50). Mean corneal astigmatism was reduced to 1.14 D (±0.67; 0.11 to 3.89) 4 months postoperatively. A partial least squares regression showed that a high eccentricity of the cornea, a large deviation between keratometry and topography, and a high preoperative astigmatism resulted in a larger postoperative error concerning astigmatism. Conclusions. PCRI causes a reduction of preoperative astigmatism, though the prediction is difficult but several factors were found to be a relevant source of error. |
| format | Article |
| id | doaj-art-2b33f1879f904cf284b5ee985eed6df4 |
| 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-2b33f1879f904cf284b5ee985eed6df42025-02-03T06:07:52ZengWileyJournal of Ophthalmology2090-004X2090-00582015-01-01201510.1155/2015/706508706508Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract SurgeryNino Hirnschall0Jörg Wiesinger1Petra Draschl2Oliver Findl3Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, 1140 Vienna, AustriaVienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, 1140 Vienna, AustriaVienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, 1140 Vienna, AustriaVienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Hanusch Hospital, 1140 Vienna, AustriaPurpose. To evaluate influencing factors on the residual astigmatism after performing peripheral corneal relaxing incisions (PCRIs) during cataract surgery. Methods. This prospective study included patients who were scheduled for cataract surgery with PCRIs. Optical biometry (IOLMaster 500, Carl Zeiss Meditec AG, Germany) was taken preoperatively, 1 week, 4 months, and 1 year postoperatively. Additionally, corneal topography (Atlas model 9000, Carl Zeiss Meditec AG, Germany), ORA (Ocular Response Analyzer, Reichert Ophthalmic Instruments, USA), and autorefraction (Autorefractometer RM 8800 Topcon) were performed postoperatively. Results. Mean age of the study population n=74 was 73.5 years (±9.3; range: 53 to 90) and mean corneal astigmatism preoperatively was −1.82 D (±0.59; 1.00 to 4.50). Mean corneal astigmatism was reduced to 1.14 D (±0.67; 0.11 to 3.89) 4 months postoperatively. A partial least squares regression showed that a high eccentricity of the cornea, a large deviation between keratometry and topography, and a high preoperative astigmatism resulted in a larger postoperative error concerning astigmatism. Conclusions. PCRI causes a reduction of preoperative astigmatism, though the prediction is difficult but several factors were found to be a relevant source of error.http://dx.doi.org/10.1155/2015/706508 |
| spellingShingle | Nino Hirnschall Jörg Wiesinger Petra Draschl Oliver Findl Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery Journal of Ophthalmology |
| title | Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery |
| title_full | Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery |
| title_fullStr | Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery |
| title_full_unstemmed | Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery |
| title_short | Factors Influencing Efficacy of Peripheral Corneal Relaxing Incisions during Cataract Surgery |
| title_sort | factors influencing efficacy of peripheral corneal relaxing incisions during cataract surgery |
| url | http://dx.doi.org/10.1155/2015/706508 |
| work_keys_str_mv | AT ninohirnschall factorsinfluencingefficacyofperipheralcornealrelaxingincisionsduringcataractsurgery AT jorgwiesinger factorsinfluencingefficacyofperipheralcornealrelaxingincisionsduringcataractsurgery AT petradraschl factorsinfluencingefficacyofperipheralcornealrelaxingincisionsduringcataractsurgery AT oliverfindl factorsinfluencingefficacyofperipheralcornealrelaxingincisionsduringcataractsurgery |