Correction of hyperopia by intrastromal cutting and biocompatible filler injection (Conference Presentation)

Sebastian Freidank; Alfred Vogel; Richard R. Anderson; Reginald Birngruber; Norbert Linz

doi:10.1117/12.2252776

16 May 2017 Correction of hyperopia by intrastromal cutting and biocompatible filler injection (Conference Presentation)

Sebastian Freidank, Alfred Vogel, Richard R. Anderson, Reginald Birngruber, Norbert Linz

Author Affiliations +

Proceedings Volume 10045, Ophthalmic Technologies XXVII; 100451J (2017) https://doi.org/10.1117/12.2252776
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

For ametropic eyes, LASIK is a common surgical procedure to correct the refractive error. However, the correction of hyperopia is more difficult than that of myopia because the increase of the central corneal curvature by excimer ablation is only possible by intrastromal tissue removal within a ring-like zone in the corneal periphery. For high hyperopia, the ring-shaped indentation leads to problems with the stability and reproducibility of the correction due to epithelial regrowth. Recently, it was shown that the correction of hyperopia can be achieved by implanting intracorneal inlays into a laser-dissected intrastromal pocket. In this paper we demonstrate the feasibility of a new approach in which a transparent, and biocompatible liquid filler material is injected into a laser-dissected corneal pocket, and the refractive change is monitored via OCT. This technique allows for a precise and adjustable change of the corneal curvature. Precise cutting of the intrastromal pocket was achieved by focusing UV laser picosecond pulses from a microchip laser system into the cornea. After laser dissection, the transparent filler material was injected into the pocket. The increase of the refractive power by filler injection was evaluated by taking OCT images from the cornea. With this novel technique, it is possible to precisely correct hyperopia of up to 10 diopters. An astigmatism correction is also possible by using ellipsoidal intrastromal pockets.

Conference Presentation

Citation Download Citation

Sebastian Freidank, Alfred Vogel, Richard R. Anderson, Reginald Birngruber, and Norbert Linz "Correction of hyperopia by intrastromal cutting and biocompatible filler injection (Conference Presentation)", Proc. SPIE 10045, Ophthalmic Technologies XXVII, 100451J (16 May 2017); https://doi.org/10.1117/12.2252776

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Laser vision correction

Laser cutting

Cornea

Optical coherence tomography

Excimers

LASIK

Liquids

Show All Keywords

Keywords/Phrases

Search In:

Publication Years