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Topography-guided custom ablation treatment for treatment of keratoconus.

Shetty R, D'Souza S, Srivastava S, Ashwini R - Indian J Ophthalmol (2013)

Bottom Line: The aim of the procedure is not to give a complete refractive correction.It has been tried with a lot of success by various groups of refractive surgeons around the world but a meticulous and methodical planning of the procedure is essential to ensure optimum results.In this paper, we attempt to elucidate the planning for a T-CAT procedure for various types of cones and asphericities.

View Article: PubMed Central - PubMed

Affiliation: Department of Cornea and Refractive Surgery, Narayana Nethralaya Superspeciality Eye Hospital and Postgraduate Institute, Bangalore, Karnataka, India.

ABSTRACT
Keratoconus is a progressive ectatic disorder of the cornea which often presents with fluctuating refraction and high irregular astigmatism. Correcting the vision of these patients is often a challenge because glasses are unable to correct the irregular astigmatism and regular contact lenses may not fit them very well. Topography-guided custom ablation treatment (T-CAT) is a procedure of limited ablation of the cornea using excimer laser with the aim of regularizing the cornea, improving the quality of vision and possibly contact lens fit. The aim of the procedure is not to give a complete refractive correction. It has been tried with a lot of success by various groups of refractive surgeons around the world but a meticulous and methodical planning of the procedure is essential to ensure optimum results. In this paper, we attempt to elucidate the planning for a T-CAT procedure for various types of cones and asphericities.

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Case 1 pre-operative pentacam 4 map showing a slightly decentred cone in keratoconus
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Figure 3: Case 1 pre-operative pentacam 4 map showing a slightly decentred cone in keratoconus

Mentions: A 22-year-old male patient presented to us with keratoconus both eyes, intolerant to contact lens. His right eye UCVA was 6/18 and BCVA was 6/9 with a spectacle correction of −1.0 DS/−3.5DC@70°. His pre-operative pentacam map is shown in Fig. 3 which shows an early keratoconus with a partially inferiorly decentred cone. The pre-operative Q measured by Topolyser was −0.67 which also suggests a mild decentration of the cone and it was retained unchanged.


Topography-guided custom ablation treatment for treatment of keratoconus.

Shetty R, D'Souza S, Srivastava S, Ashwini R - Indian J Ophthalmol (2013)

Case 1 pre-operative pentacam 4 map showing a slightly decentred cone in keratoconus
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3775085&req=5

Figure 3: Case 1 pre-operative pentacam 4 map showing a slightly decentred cone in keratoconus
Mentions: A 22-year-old male patient presented to us with keratoconus both eyes, intolerant to contact lens. His right eye UCVA was 6/18 and BCVA was 6/9 with a spectacle correction of −1.0 DS/−3.5DC@70°. His pre-operative pentacam map is shown in Fig. 3 which shows an early keratoconus with a partially inferiorly decentred cone. The pre-operative Q measured by Topolyser was −0.67 which also suggests a mild decentration of the cone and it was retained unchanged.

Bottom Line: The aim of the procedure is not to give a complete refractive correction.It has been tried with a lot of success by various groups of refractive surgeons around the world but a meticulous and methodical planning of the procedure is essential to ensure optimum results.In this paper, we attempt to elucidate the planning for a T-CAT procedure for various types of cones and asphericities.

View Article: PubMed Central - PubMed

Affiliation: Department of Cornea and Refractive Surgery, Narayana Nethralaya Superspeciality Eye Hospital and Postgraduate Institute, Bangalore, Karnataka, India.

ABSTRACT
Keratoconus is a progressive ectatic disorder of the cornea which often presents with fluctuating refraction and high irregular astigmatism. Correcting the vision of these patients is often a challenge because glasses are unable to correct the irregular astigmatism and regular contact lenses may not fit them very well. Topography-guided custom ablation treatment (T-CAT) is a procedure of limited ablation of the cornea using excimer laser with the aim of regularizing the cornea, improving the quality of vision and possibly contact lens fit. The aim of the procedure is not to give a complete refractive correction. It has been tried with a lot of success by various groups of refractive surgeons around the world but a meticulous and methodical planning of the procedure is essential to ensure optimum results. In this paper, we attempt to elucidate the planning for a T-CAT procedure for various types of cones and asphericities.

Show MeSH
Related in: MedlinePlus