Long-term astigmatic changes after clear corneal cataract surgery

Müller-Jensen, K; Barlinn, B.

doi:10.1016/s0886-3350(97)80179-4

Cited by 14 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This reduction of the tunnel size by 1 mm led to an overall reduction of the surgically induced astigmatism by half; while the 4.1-mm incision resulted in 0.8 dpt and confirmed previous results [6, 12], the astigmatism after a 3.2-mm incision was only 0.4 dpt. These comparative studies are easier to analyze with patients having an initial spherical cornea, because the absolute postoperative astigmatism is identical to the surgically induced astigmatism (fig.…”

Section: Discussionsupporting

confidence: 90%

“…This may be because our patients had a relatively low preoperative astigmatism (0.85). The steeper the axis on the incision site, the more relaxing is the effect of a corneal incision [6, 12]. In case of astigmatism against the rule, only the postoperative polar value according to Naeser (AKP2) was significantly different for the two types of incisions.…”

Section: Discussionmentioning

confidence: 99%

“…The technical details of the stretch incision have been described in detail previously [5, 6]. In principle, the traces of both incisions are similar, except that the 5-mm PMMA lenses (Morcher 29 B or Rayner 511A) required the larger incision than the 5.5-mm foldable Acrysof lenses (Alcon MA30BA), which required a 1 mm smaller incision (fig.…”

Section: Methodsmentioning

confidence: 99%

“…We tested this question in a prospective randomized study using the corneal stretch incision which facilitates the implantation procedure [5, 6]. …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Corneal Refractive Changes after Acrysof Lens versus PMMA Lens Implantation

Müller-Jensen

Barlinn²

2000

Ophthalmologica

View full text Add to dashboard Cite

Purpose: Do foldable acrylic lenses yield not only reduced posterior capsular opacification but also significant refractive advantages? Patients and Methods: 147 cataract patients including 47 with spherical corneas and 100 with preoperative astigmatism of 0.8 ± 0.7 dpt were treated in one of two ways: 70 patients received 5.5-mm Acrysof lens implants through 3.2-mm outer and 4-mm inner temporal clear corneal openings (stretch incision); 77 patients received 5-mm PMMA lenses through temporal clear corneal incisions of 4.1-mm outer and 6.5-mm inner diameter incisions. Corneal topography was examined in all patients before the operations as well as 3 days and 6 months after the operations. Results: 6 months after the operations, we observed a surgically induced astigmatism of 0.4 ± 0.2 dpt for the 3.2-mm incisions compared to 0.8 ± 0.7 dpt for the 4.1-mm incisions; evaluation according to Holladay of the preoperative spherical corneas yielded a with-the-wound change of 0.0 ± 0.3 dpt after 3.2-mm incisions versus 0.6 ± 0.7 dpt after 4.1-mm incisions. The difference in astigmatism for the two types of incisions was statistically significant (p = 0.001). Conclusion: Acrysof lens implantation is especially useful for patients with spherical corneas because of avoidance of postoperative astigmatism. The 4.1-mm corneal incision using PMMA lens implants can be used on the steep meridian to reduce preoperative astigmatism.

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…We tested this question in a prospective randomized study using the corneal stretch incision which facilitates the implantation procedure [5, 6]. …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Corneal Refractive Changes after Acrysof Lens versus PMMA Lens Implantation

Müller-Jensen

Barlinn²

2000

Ophthalmologica

View full text Add to dashboard Cite

show abstract

“…The ophthalmic literature estimates that the magnitude of surgically induced astigmatism (SIA) studied by vector analysis is around 0.44 D and 0.88 D, rising as the size of the incision increases. [7][8][9][10][11][12][13] When the axis of the SIA was studied, it was observed that temporal incisions induced 'with the rule' astigmatism. 8,10,11 In this study, we aim to show whether or not MICS generates less astigmatism than CP with temporal incision.…”

Section: Introductionmentioning

confidence: 99%

Surgically induced astigmatism after biaxial phacoemulsification compared to coaxial phacoemulsification

Morcillo-Laiz

Zato

Muñoz‐Negrete

et al. 2008

Eye

View full text Add to dashboard Cite

Purpose A comparison of the topographic astigmatism generated after coaxial phacoemulsification (CP) through temporal 2.8 mm incision and biaxial phacoemulsification (MICS) through superioroblique trapezoidal 1.5-2 mm incisions. Setting Centre for Visual Sciences (Instituto de Ciencias Visuales, INCIVI), Madrid, Spain Methods This prospective randomized clinical study included 94 eyes of 64 patients; 43 eyes were operated on through CP and 51 through MICS. Corneal topography was measured before operation, and subsequently after 1, 3, and 6 months. Additionally, a control group (C) of 55 eyes was created (performing two topographies on them); the change in astigmatism was calculated without having performed any surgical procedure. The astigmatic change in the three groups was measured through arithmetic, polar and vector analysis (Alpins method). Results In the vector analysis, results after the first month following surgery were: mean module of the surgically induced astigmatism (SIA) 0.49 ± 0.38 D in CP and 0.48 ± 0.37 D in MICS, while 0.31 ± 0.27 D in group C. Although no statistically significant differences were detected between the two surgical techniques, differences were noted when comparing group C with each of these techniques (Po0.05). The distribution of the SIA axes showed a slight tendency to be located more frequently at around 901 in CP, and at around 501 in MICS. Conclusions The mean module of SIA was similar in CP and in MICS, although the distribution of the direction of such a vector revealed minor differences.

show abstract