Treatment of irregular astigmatism

@article{Alpins1998TreatmentOI,
  title={Treatment of irregular astigmatism},
  author={Noel Alpins},
  journal={Journal of Cataract and Refractive Surgery},
  year={1998},
  volume={24},
  pages={634–646}
}
  • N. Alpins
  • Published 1 May 1998
  • Physics, Medicine
  • Journal of Cataract and Refractive Surgery
View on Wolters Kluwer
ncbi.nlm.nih.gov
33 Citations
Highly Influential Citations
1
Background Citations
6
Methods Citations
4
Results Citations
1

Figures from this paper

33 Citations

Hemidivisional vector planning to reduce and regularize irregular astigmatism by laser treatment
To demonstrate how hemidivisional vector planning of refractive laser treatments of astigmatism can be used to directly address idiopathic corneal irregular astigmatism that has an asymmetrical,…
Management of irregular astigmatism.
TLDR
The way to further refinement of the commonly performed refractive techniques will ultimately lie in the integrated inclusion of a trio of technologies: topographic analysis of the corneal surface, wavefront analysis of ocular refractive aberrations, and vector planning to enable the appropriate balance in emphasis between these two diagnostic modalities.
Role of Hemidivisional Corneal Topographic Astigmatisms (CorTs) in the Regularization and Reduction of Irregular Astigmatism
TLDR
HemiCorTs allow for the design of hemidivisional corneal treatments of asymmetric nonorthogonal astigmatism and should be suitable in the routine treatment of commonly occurring irregularAstigmatism, while also allowing the spherical refractive error to be treated concurrently.
New method of quantifying corneal topographic astigmatism that corresponds with manifest refractive cylinder
Astigmatism analysis by the Alpins method
  • N. Alpins
  • Medicine, Physics
    Journal of cataract and refractive surgery
  • 2001
Vector Analysis Applications to Photorefractive Surgery
TLDR
The methodology in this chapter addresses planning of photoastigmatic refractive surgery as well as the analysis requirements of corneal and refractive astigmatism, andperiodic and frequent analysis of results for ongoing nomogram refinement enables incremental improvement of future treatments and outcomes to be refined.
Vector analysis of astigmatism changes by flattening, steepening, and torque
  • N. Alpins
  • Medicine, Physics
    Journal of cataract and refractive surgery
  • 1997
Efficacy of laser in situ keratomileusis in correcting anterior and non‐anterior corneal astigmatism: Comparative study
LASIK for Spherical Refractive Myopia: Effect of Topographic Astigmatism (Ocular Residual Astigmatism, ORA) on Refractive Outcome
TLDR
A preoperative cornealAstigmatism of ≥0.9 D could (partially) be taken into account in the LASIK design, even if the subjective refractive astigmatism is neutral.
Astigmatism – Definition, Etiology, Classification, Diagnosis and Non-Surgical Treatment
TLDR
It should be pointed out to the reader that with modern topographers and aberrometerss it is possible to measure corneal and internal astigmatism and such estimations like Javal’s rule are clinically less relevant.
...
...

References

SHOWING 1-7 OF 7 REFERENCES
New method of targeting vectors to treat astigmatism
  • N. Alpins
  • Medicine, Physics
    Journal of cataract and refractive surgery
  • 1997
Vector analysis of astigmatism changes by flattening, steepening, and torque
  • N. Alpins
  • Medicine, Physics
    Journal of cataract and refractive surgery
  • 1997
A new method of analyzing vectors for changes in astigmatism
  • N. Alpins
  • Medicine
    Journal of cataract and refractive surgery
  • 1993
ACCEPTANCE OF WEAK CYLINDERS AT PARADOXIC AXES
TLDR
In cases of astigmatism, I refer to instances in which cyclopegia is well effected by homatropine or atropine and in which the question of accommodation does not enter and the sign of the cylinder remains unchanged.
Computer-assisted corneal topography in family members of patients with keratoconus.
TLDR
A computer-assisted digital videophotokeratoscope was used to map the corneas of 28 family members of 5 patients with keratoconus and abnormalities observed in family members included central steepening, greater steepening of the cornea inferior to the apex, and substantial asymmetry in the central dioptric power between the two eyes of the same individual.
[Corneal topography of keratoconus].
TLDR
Topographic findings show that in keratoconus the central corneal refractive power is greater, the difference between the refractive powers of the bilateralcentral corneas of a case is larger and the inferior cornea is steeper than the superior cornea.
ESTIMATION OF UNCORRECTED VISUAL ACUITY IN MALINGERERS
TLDR
By following the routine about to be described, one may in most cases estimate with reasonable accuracy the uncorrected visual acuity of ametropic persons.