Comparison of contrast sensitivity and visual acuity between deep anterior lamellar keratoplasty and penetrating keratoplasty in patients with keratoconus
AIM: To evaluate postoperative visual acuity and contrast sensitivity results following deep anterior lamellar keratoplasty (DALK) and penetrating keratoplasty (PK) in patients with keratoconus (KC). METHODS: All the patients' records with KC who had PK or DALK surgery between May 2010 and May 2011 were retrospectively reviewed. Sixty patients who underwent successful corneal transplantation for KC: 30 eyes underwent DALK and 30 eyes underwent PK were included in this study. Preoperative and postoperative mean logarithm of the minimum angle of resolution (logMAR) uncorrected visual acuity (UCVA), logMAR best spectacle-corrected visual acuity (BSCVA) and intraocular pressure (IOP) were evaluated. Contrast sensitivity tests (CS) were done preoperative and 2 months after all sutures had removed. All surgeries were performed under regional anesthesia (retrobulbar anesthesia) by 1 surgeon (B.K.) who was experienced in penetrating and lamellar keratoplasty techniques. RESULTS: The mean age of the DALK group was 29.67 +/- 4.95 (range 18-40) years and the PK group was 28.7 +/- 3.53 (range 18-39) years. Preoperatively there was no significant difference in the logMAR UCVA, logMAR BSCVA and IOP between the DALK (1.281 +/- 0.56; 0.97 +/- 0.85; 12.07 +/- 2.12mmHg) and PK (1.34 +/- 0.21; 0.98 +/- 0.21; 13 +/- 2.12mmHg) groups. One-year after surgery there was no significant difference in the mean logMAR UCVA and IOP between the DALK (0.46 +/- 0.37; 11.73 +/- 2.1mmHg) and PK (0.38 +/- 0.21; 12 +/- 2.12mmHg) groups. The mean contrast sensitivity was evaluated by CC-100 Topcon LCD at 1.5, 2.52, 4.23, 7.10 and 11.91 cycles per degree (cs/deg) spatial frequencies before and 2 months after the all sutures had removed. CONCLUSION: All patients with keratoconus in both DALK and PK groups performed good visual function postoperatively. The mean contrast sensitivity increased considerably at all spatial frequencies compared with preoperative levels in the DALK and PK groups. The mean post-operative evaluation of contrast sensitivity measurements was not significantly different between the two groups.
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Bahar, Irit
Kaiserman, Igor
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Kaiserman, Igor
Srinivasan, Sathish
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Ayr Hosp, Dept Ophthalmol, Ayr, ScotlandUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Srinivasan, Sathish
Ya-Ping, Jin
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Ya-Ping, Jin
Slomovic, Allan R.
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Slomovic, Allan R.
Rootman, David S.
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Cohen A.W.
Goins K.M.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Goins K.M.
Sutphin J.E.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Department of Ophthalmology, University of Kansas, Medical Center, Kansas City, KSDepartment of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Sutphin J.E.
Wandling G.R.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Wandling G.R.
Wagoner M.D.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Bahar, Irit
Kaiserman, Igor
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Kaiserman, Igor
Srinivasan, Sathish
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Ayr Hosp, Dept Ophthalmol, Ayr, ScotlandUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Srinivasan, Sathish
Ya-Ping, Jin
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Ya-Ping, Jin
Slomovic, Allan R.
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
Slomovic, Allan R.
Rootman, David S.
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Univ Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, CanadaUniv Toronto, Toronto Western Hosp, Dept Ophthalmol, Univ Hlth Network, Toronto, ON M5T 2S8, Canada
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Cohen A.W.
Goins K.M.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Goins K.M.
Sutphin J.E.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Department of Ophthalmology, University of Kansas, Medical Center, Kansas City, KSDepartment of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Sutphin J.E.
Wandling G.R.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091
Wandling G.R.
Wagoner M.D.
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Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091Department of Ophthalmology and Visual Sciences, University of Iowa, Carver College of Medicine, Iowa City, IA 52242-1091