Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty
Purpose: The purpose of the study was to implement a new eye tracking mask which could be used to guide the laser beam in automated non-mechanical excimer laser assisted penetrating keratoplasty. Materials and methods: A new trephination mask design with an elevated surface geometry has been propose...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2013-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/13/3/3753 |
| _version_ | 1811300062453563392 |
|---|---|
| author | Achim Langenbucher Berthold Seitz Nora Szentmáry Frank Schirra Edgar Janunts |
| author_facet | Achim Langenbucher Berthold Seitz Nora Szentmáry Frank Schirra Edgar Janunts |
| author_sort | Achim Langenbucher |
| collection | DOAJ |
| description | Purpose: The purpose of the study was to implement a new eye tracking mask which could be used to guide the laser beam in automated non-mechanical excimer laser assisted penetrating keratoplasty. Materials and methods: A new trephination mask design with an elevated surface geometry has been proposed with a step formation between conical and flat interfaces. Two recipient masks of 7.5/8.0 mm have been manufactured and tested. The masks have outer diameter of 12.5 mm, step formation at 10.5 mm, and slope of conical surfaces 15°. Its functionality has been tested in different lateral positions and tilts on a planar surface, and pig eye experiments. After successful validation on porcine eyes, new masks have been produced and tested on two patients. Results: The build-in eye tracking software of the MEL 70 was always able to capture the masks. It has been shown that the unwanted pigmentation/pattern induced by the laser pulses on the mask surface does not influence the eye-tracking efficiency. The masks could be tracked within the 18 × 14 mm lateral displacement and up to 12° tilt. Two patient cases are demonstrated. No complications were observed during the surgery, although it needs some attention for aligning the mask horizontally before trephination. Stability of eye tracking masks is emphasized by inducing on purpose movements of the patient head. Conclusion: Eye-tracking-guided penetrating keratoplasty was successfully applied in clinical practice, which enables robust tracking criteria within an extended range. It facilitates the automated trephination procedure of excimer laser-assisted penetrating keratoplasty. |
| first_indexed | 2024-04-13T06:45:43Z |
| format | Article |
| id | doaj.art-6d500c98e2484c32bc0de211ac670574 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T06:45:43Z |
| publishDate | 2013-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6d500c98e2484c32bc0de211ac6705742022-12-22T02:57:36ZengMDPI AGSensors1424-82202013-03-011333753376410.3390/s130303753Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating KeratoplastyAchim LangenbucherBerthold SeitzNora SzentmáryFrank SchirraEdgar JanuntsPurpose: The purpose of the study was to implement a new eye tracking mask which could be used to guide the laser beam in automated non-mechanical excimer laser assisted penetrating keratoplasty. Materials and methods: A new trephination mask design with an elevated surface geometry has been proposed with a step formation between conical and flat interfaces. Two recipient masks of 7.5/8.0 mm have been manufactured and tested. The masks have outer diameter of 12.5 mm, step formation at 10.5 mm, and slope of conical surfaces 15°. Its functionality has been tested in different lateral positions and tilts on a planar surface, and pig eye experiments. After successful validation on porcine eyes, new masks have been produced and tested on two patients. Results: The build-in eye tracking software of the MEL 70 was always able to capture the masks. It has been shown that the unwanted pigmentation/pattern induced by the laser pulses on the mask surface does not influence the eye-tracking efficiency. The masks could be tracked within the 18 × 14 mm lateral displacement and up to 12° tilt. Two patient cases are demonstrated. No complications were observed during the surgery, although it needs some attention for aligning the mask horizontally before trephination. Stability of eye tracking masks is emphasized by inducing on purpose movements of the patient head. Conclusion: Eye-tracking-guided penetrating keratoplasty was successfully applied in clinical practice, which enables robust tracking criteria within an extended range. It facilitates the automated trephination procedure of excimer laser-assisted penetrating keratoplasty.http://www.mdpi.com/1424-8220/13/3/3753eye-trackertrephination maskcomputerized penetrating keratoplastynon mechanical corneal trephinationexcimer laser |
| spellingShingle | Achim Langenbucher Berthold Seitz Nora Szentmáry Frank Schirra Edgar Janunts Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty Sensors eye-tracker trephination mask computerized penetrating keratoplasty non mechanical corneal trephination excimer laser |
| title | Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty |
| title_full | Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty |
| title_fullStr | Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty |
| title_full_unstemmed | Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty |
| title_short | Eye-Tracker-Guided Non-Mechanical Excimer Laser Assisted Penetrating Keratoplasty |
| title_sort | eye tracker guided non mechanical excimer laser assisted penetrating keratoplasty |
| topic | eye-tracker trephination mask computerized penetrating keratoplasty non mechanical corneal trephination excimer laser |
| url | http://www.mdpi.com/1424-8220/13/3/3753 |
| work_keys_str_mv | AT achimlangenbucher eyetrackerguidednonmechanicalexcimerlaserassistedpenetratingkeratoplasty AT bertholdseitz eyetrackerguidednonmechanicalexcimerlaserassistedpenetratingkeratoplasty AT noraszentmary eyetrackerguidednonmechanicalexcimerlaserassistedpenetratingkeratoplasty AT frankschirra eyetrackerguidednonmechanicalexcimerlaserassistedpenetratingkeratoplasty AT edgarjanunts eyetrackerguidednonmechanicalexcimerlaserassistedpenetratingkeratoplasty |