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Hesam Hashemian, MD, Mahmoud Jabbarvand, MD, Mehdi Khodaparast, MD
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Mahmoud Jabbarvand, MD; Hesam Hashemian, MD; and Mehdi Khodaparast, MD; discuss the use of a MyoRing (Dioptex) implant for cornea ectasia. According to the factory nomogram, CXL is an optional pretreatment when the patient's mean keratometry is greater than 50.00 D and is recommended when the number is higher than 55.00 D. We used an adapted nomogram to calculate MyoRing size and performed CXL only if the disease progressed after ICCR implantation.
The stromal pocket is created with a femtosecond laser (Victus; Bausch + Lomb Technolas) using 1.05 μJ of energy, a spot size of 5 μm, and spot and line spacing of 3 and 5 μm, respectively. The pupil center is marked with a Sinskey hook before applanation, and this mark is used as a reference point to position the incision and to center the MyoRing after implantation.
The laser makes a temporal corneal incision (70°ree; arc length), followed by a 9-mm intrastromal pocket at a depth of 300 μm. The MyoRing is then inserted into the pocket and centered. A bandage contact lens is applied postoperatively, and topical chloramphenicol is administered every 6 hours for one week and topical lubricant and betamethasone for one month.
Posted: 12/22/2014
Hesam Hashemian, MD, Mahmoud Jabbarvand, MD, Mehdi Khodaparast, MD
Mahmoud Jabbarvand, MD; Hesam Hashemian, MD; and Mehdi Khodaparast, MD; discuss the use of a MyoRing (Dioptex) implant for cornea ectasia. According to the factory nomogram, CXL is an optional pretreatment when the patient's mean keratometry is greater than 50.00 D and is recommended when the number is higher than 55.00 D. We used an adapted nomogram to calculate MyoRing size and performed CXL only if the disease progressed after ICCR implantation.
The stromal pocket is created with a femtosecond laser (Victus; Bausch + Lomb Technolas) using 1.05 μJ of energy, a spot size of 5 μm, and spot and line spacing of 3 and 5 μm, respectively. The pupil center is marked with a Sinskey hook before applanation, and this mark is used as a reference point to position the incision and to center the MyoRing after implantation.
The laser makes a temporal corneal incision (70°ree; arc length), followed by a 9-mm intrastromal pocket at a depth of 300 μm. The MyoRing is then inserted into the pocket and centered. A bandage contact lens is applied postoperatively, and topical chloramphenicol is administered every 6 hours for one week and topical lubricant and betamethasone for one month.
Posted: 12/22/2014
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