Precisely marking the cornea is a difficult task. Mastel has set the standard with very sharp, highly polished marking edges. In order to leave very fine impressions, the epithelium has to be divided down to Bowman’s membrane. Unless this is accomplished, the surgeon will see very broad ink marks and PRK wells that do not hold the alcohol within the confines of the instrument. Dull edges can tear the epithelium, require excessive pressure, and make marks that require ink or they will disappear.
LASIK 3.0 – 5.0 mm (0.25 Increments with/without crosshairs)
Capsulorhexis 5.5, 5.75, 6.0 mm with crosshairs
PRK Alcohol Wells 6.5, 7.0, 7.5, 8.0 mm without crosshairs
OGAWA DSAEK 8.0 – 9.0 mm (0.25 Increments with/out crosshairs)
Deep Anterior Lamellar Keratoplasty (DALK) Low Profile Erdey Large Diameter DALK Set 9.0-10.25 mm (0.25 Increments with/out crosshairs)
Video Demonstration by Jason J. Jones, MD
This video discusses centration and alignment for capsulorhexis and IOL’s using the visual axis. The marker makes it easy to outline the correct diameter and location of a better, round capsulorhexis. No ink is necessary with Mastel corneal markers.
Testimonials
“I use the Mastel 5.75 mm corneal marker every time I use a ReZoom or ReSTOR lens (I offset a fraction of a millimeter inferior and nasal within the related pupil). The corneal mark is a perfect guide for the capsulorhexis, which is perfect every time. The IOL is centered, the PCO rate is very low (20% in multifocal) and the patient and surgeon are ‘20/happy’.”
Sharon Richens, MD
St. George, Utah
Optical Zone Markers
“I have found the application of a circular reference mark on the cornea to be indispensable in allowing me to create a more centered, properly sized and circular capsulorhexis. Modern IOL implantation with a sized and centered anterior capsular opening allows for lower PCO rates, improved long term centration, more accurate IOL power prediction as well as easier IOL exchange or optic capture should these maneuvers be necessary. The corneal reference markers that you have produced create a very fine indentation in the corneal epithelium that is easy to visualize during capsulorhexis creation, does not visually interfere with the remainder of the surgery, and does not leave any epithelial disruption even at 3 to 4 hours post-op. Because I can achieve a better capsular opening by using this device, I have found that I prefer to always use this corneal reference mark during my cataract surgery.”
Jason J. Jones, MD
Jones Eye Clinic
Sioux City, IA
Optical Zone Markers
“The capsulorhexis marker is a wonderful little helper with the ever persisting challenge of having a rhexis opening that is as big as possible, and as small as necessary to have the lens covered 360°. Yes, we are all experienced – and, yes, we have all had the disappointing experience, where we would have bet our head that we got it right – yet were fooled by a large eye, an asymmetric pupil and/or so many other distracters. A simple mark – you don’t guess, but know, where you are…”
Thomas F. Neuhann, MD
Munich, Germany
“Accurate visual outcomes in intraocular surgery require consistent surgical techniques….I always mark the cornea with a 6 mm Mastel optical zone marker to create a round 5.5 mm capsulorhexis.
Refractive outcomes are more reproducible… decreasing the likelihood of posterior capsule opacification. No need for messy dyes that obscure visualization of the anterior chamber. Pushing the marker lightly against the epithelium is all that is needed to make a clear impression.”
Stephen Wilmarth, MD
Roseville, CA
“The capsulorhexis marker is a wonderful little helper with the ever persisting challenge of having a rhexis opening that is as bis as possible, and as small as necessary to have the lens covered 360°.
Yes, we are all experienced – and, yes, we all have the dissappointing experience, where we would have betted our head, that we got it right – and were fooled by a big eye, an asymmetric pupil and so many other little distractors. A simple mark – and you don’t guess, but know, where you are…”
Thomas Neuhann, MD
München, Germany
Additional information
Weight
N/A
OZM Size
3.00 mm w/crosshairs, 3.00 mm wo/crosshairs, 3.25 mm w/crosshairs, 3.25 mm wo/crosshairs, 3.50 mm w/crosshairs, 3.50 mm wo/crosshairs, 3.75 mm w/crosshairs, 3.75 mm wo/crosshairs, 4.0 mm w/crosshairs, 4.0 mm wo/crosshairs, 4.25 mm w/crosshairs, 4.25 mm wo/crosshairs, 4.50 mm w/crosshairs, 4.50 mm wo/crosshairs, 4.75 mm w/crosshairs, 4.75 mm wo/crosshairs, 5.0 mm w/crosshairs, 5.0 mm wo/crosshairs, 5.5 mm w/crosshairs, 5.5 mm wo/crosshairs, 5.75 mm w/crosshairs, 5.75 mm wo/crosshairs, 6.0 mm w/crosshairs, 6.0 mm wo/crosshairs, 6.5 mm wo/crosshairs, 7.0 mm wo/crosshairs, 7.5 mm wo/crosshairs, 8.0 mm wo/crosshairs, 8.25 mm wo/crosshairs, 8.50 mm wo/crosshairs, 8.75 mm wo/crosshairs, 9.0 mm wo/crosshairs, 9.25 mm wo/crosshairs, 9.50 mm wo/crosshairs, 9.75 mm wo/crosshairs, 10.0 mm w/crosshairs, 10.0 mm wo/crosshairs, 10.25 mm wo/crosshairs
Optical Zone Markers
$391.00$293.00Precisely marking the cornea is a difficult task. Mastel has set the standard with very sharp, highly polished marking edges. In order to leave very fine impressions, the epithelium has to be divided down to Bowman’s membrane. Unless this is accomplished, the surgeon will see very broad ink marks and PRK wells that do not hold the alcohol within the confines of the instrument. Dull edges can tear the epithelium, require excessive pressure, and make marks that require ink or they will disappear.
Description
Sizing Guide:
Video Demonstration by Jason J. Jones, MD
This video discusses centration and alignment for capsulorhexis and IOL’s using the visual axis. The marker makes it easy to outline the correct diameter and location of a better, round capsulorhexis. No ink is necessary with Mastel corneal markers.
Testimonials
“I use the Mastel 5.75 mm corneal marker every time I use a ReZoom or ReSTOR lens (I offset a fraction of a millimeter inferior and nasal within the related pupil). The corneal mark is a perfect guide for the capsulorhexis, which is perfect every time. The IOL is centered, the PCO rate is very low (20% in multifocal) and the patient and surgeon are ‘20/happy’.”
Optical Zone Markers
“I have found the application of a circular reference mark on the cornea to be indispensable in allowing me to create a more centered, properly sized and circular capsulorhexis. Modern IOL implantation with a sized and centered anterior capsular opening allows for lower PCO rates, improved long term centration, more accurate IOL power prediction as well as easier IOL exchange or optic capture should these maneuvers be necessary. The corneal reference markers that you have produced create a very fine indentation in the corneal epithelium that is easy to visualize during capsulorhexis creation, does not visually interfere with the remainder of the surgery, and does not leave any epithelial disruption even at 3 to 4 hours post-op. Because I can achieve a better capsular opening by using this device, I have found that I prefer to always use this corneal reference mark during my cataract surgery.”
Optical Zone Markers
“The capsulorhexis marker is a wonderful little helper with the ever persisting challenge of having a rhexis opening that is as big as possible, and as small as necessary to have the lens covered 360°. Yes, we are all experienced – and, yes, we have all had the disappointing experience, where we would have bet our head that we got it right – yet were fooled by a large eye, an asymmetric pupil and/or so many other distracters. A simple mark – you don’t guess, but know, where you are…”
“Accurate visual outcomes in intraocular surgery require consistent surgical techniques….I always mark the cornea with a 6 mm Mastel optical zone marker to create a round 5.5 mm capsulorhexis.
Refractive outcomes are more reproducible… decreasing the likelihood of posterior capsule opacification. No need for messy dyes that obscure visualization of the anterior chamber. Pushing the marker lightly against the epithelium is all that is needed to make a clear impression.”
“The capsulorhexis marker is a wonderful little helper with the ever persisting challenge of having a rhexis opening that is as bis as possible, and as small as necessary to have the lens covered 360°.
Yes, we are all experienced – and, yes, we all have the dissappointing experience, where we would have betted our head, that we got it right – and were fooled by a big eye, an asymmetric pupil and so many other little distractors. A simple mark – and you don’t guess, but know, where you are…”
Additional information
3.00 mm w/crosshairs, 3.00 mm wo/crosshairs, 3.25 mm w/crosshairs, 3.25 mm wo/crosshairs, 3.50 mm w/crosshairs, 3.50 mm wo/crosshairs, 3.75 mm w/crosshairs, 3.75 mm wo/crosshairs, 4.0 mm w/crosshairs, 4.0 mm wo/crosshairs, 4.25 mm w/crosshairs, 4.25 mm wo/crosshairs, 4.50 mm w/crosshairs, 4.50 mm wo/crosshairs, 4.75 mm w/crosshairs, 4.75 mm wo/crosshairs, 5.0 mm w/crosshairs, 5.0 mm wo/crosshairs, 5.5 mm w/crosshairs, 5.5 mm wo/crosshairs, 5.75 mm w/crosshairs, 5.75 mm wo/crosshairs, 6.0 mm w/crosshairs, 6.0 mm wo/crosshairs, 6.5 mm wo/crosshairs, 7.0 mm wo/crosshairs, 7.5 mm wo/crosshairs, 8.0 mm wo/crosshairs, 8.25 mm wo/crosshairs, 8.50 mm wo/crosshairs, 8.75 mm wo/crosshairs, 9.0 mm wo/crosshairs, 9.25 mm wo/crosshairs, 9.50 mm wo/crosshairs, 9.75 mm wo/crosshairs, 10.0 mm w/crosshairs, 10.0 mm wo/crosshairs, 10.25 mm wo/crosshairs
Bores, Thornton