Keratoprosthesis Surgery as an Alternative to Keratoplasty

Corneal transplant surgery after chemical or thermal burns has a very low success rate. Vision in these patients can be restored by using an artificial cornea (keratoprosthesis). In this report, we present 5 clinical cases of implanting a fresh corneal graft with Boston type 1 keratoprosthesis in patients with corneas inappropriate for standard corneal transplantation. The mean follow-up was 26.4 months (range, 12 to 36 months; SD, 13.1). The main measures of outcomes were visual acuity and keratoprosthesis stability. At least 1 year after the operation (5 eyes), vision acuity was >0.1 in 100% of the eyes and >0.4 in 50% of the eyes. Retention of the initial keratoprosthesis was 100%. The results of this study seem to be similar to those reported internationally. The anatomical and visual functions of the eyes were stable after keratoprosthesis implantation, though for a longer follow-up period, additional surgical procedures may be required.

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Time to achieve best postoperative visual acuity following Boston keratoprosthesis surgery

British Journal of Ophthalmology ◽

10.1136/bjophthalmol-2020-317483 ◽

2021 ◽

pp. bjophthalmol-2020-317483

Author(s):

Jonathan El-Khoury ◽

Majd Mustafa ◽

Roy Daoud ◽

Mona Harissi-Dagher

Keyword(s):

Visual Acuity ◽

Contributing Factors ◽

Time Duration ◽

Patient Demographics ◽

Snellen Visual Acuity ◽

Boston Type 1 Keratoprosthesis ◽

The Mean ◽

Retroprosthetic Membrane

Background/aimsTo evaluate the time needed for patients with Boston type 1 keratoprosthesis (KPro) to reach their best-corrected visual acuity (BCVA) and all contributing factors.MethodsWe retrospectively reviewed 137 consecutive eyes from 118 patients, measured how long they needed to reach their BCVA and looked at factors that might affect this time duration including patient demographics, ocular comorbidities and postoperative complications.ResultsThe mean follow-up was 5.49 years. The median time to BCVA postoperatively was 6 months, with 47% of patients achieving their BCVA by 3 months. The mean best achieved logMAR visual acuity was 0.71, representing a gain of 6 lines on the Snellen visual acuity chart. Postoperative glaucoma, retroprosthetic membrane (RPM) and endophthalmitis prolonged this duration. We found no correlation between the following factors and time to BCVA: gender, age, indication for KPro surgery, primary versus secondary KPro, number of previous penetrating keratoplasties, previous retinal surgery, intraoperative anterior vitrectomy and preoperative glaucoma.ConclusionIn our retrospective cohort, the majority of subjects reached their BCVA between 3 and 6 months after KPro implantation. This duration was significantly prolonged by the development of postoperative glaucoma, RPM and endophthalmitis.

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The Therapeutic Effect of Corneal Transplantation for Refractory Pseudomonas Aeruginosa Corneal Ulcer

10.21203/rs.2.17414/v1 ◽

2019 ◽

Author(s):

Yan Li ◽

Ting Wang ◽

Qiang Wang ◽

Shanhao Jiang ◽

Xin Wang

Keyword(s):

Pseudomonas Aeruginosa ◽

Visual Acuity ◽

Corneal Ulcer ◽

Corneal Transplantation ◽

Corneal Graft ◽

Successful Outcome ◽

Lamellar Keratoplasty ◽

Corneal Transplant ◽

Surgical Method

Abstract Purpose To observe the treatment outcome of corneal transplantation for advanced medically uncontrolled culture-proven pseudomonas aeruginosa corneal ulcer.Design Retrospective analysisSubjects and methods 26 patients (eyes) with refractory culture-positive pseudomonas aeruginosa corneal ulcer who failed to respond to drug therapy and underwent consecutive corneal transplant procedures in a hospital (2008.1-2018.8). Etiology, medical history, clinical features, surgical type, vision, recurrence, complications and treatment were recorded, and the relationship between postoperative recovery and selection of surgical method was analyzed.Results Of the 26 patients with pseudomonas aeruginosa corneal ulcer, 9 (34.6%) received penetrating keratoplasty (PKP) and 17 (65.4%) received lamellar keratoplasty (LKP). 22 patients (84.6%) obtained a successful outcome through one corneal transplantation. Of the 9 patients who received PKP, 1 patient having graft rejection 6 months after surgery (endothelial type) obtained successful outcome through adequate drug treatment., while 1 case received success by graft repair combined with amniotic membrane transplantation on the 5 months postoperatively for fungal corneal graft ulcer. In the 17 patients underwent LKP, 2 received a second successful lamellar corneal transplantation for corneal graft melting 2 months after the first surgery. In all the 26 patients, the corneal infection was effectively brought under control by corneal transplantation, and none of them had recurrent ulcers during at least 6months' follow-up. The visual acuity was significantly improved at the last follow-up compared with that before surgery. The postoperative visual acuity of patients underwent LKP was better than that of those who underwent PKP ( p =0.018).Conclusions Corneal transplantation can effectively treat refractory pseudomonas aeruginosa corneal ulcer worsening despite adequate medical treatment and improve eyesight. Compared with PKP, LKP can be the main surgical method to treat refractory pseudomonas aeruginosa corneal ulcer.

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Outcome of Primary Nonpenetrating Deep Sclerectomy in Patients with Steroid-Induced Glaucoma

Journal of Ophthalmology ◽

10.1155/2018/9215650 ◽

2018 ◽

Vol 2018 ◽

pp. 1-7

Author(s):

Abdelhamid Elhofi ◽

Hany Ahmed Helaly

Keyword(s):

Visual Acuity ◽

Intraocular Pressure ◽

Clinical Study ◽

Success Rate ◽

Deep Sclerectomy ◽

Significant Difference ◽

Corrected Distance Visual Acuity ◽

The Mean ◽

Ab Interno

Purpose. To evaluate the outcome of primary nonpenetrating deep sclerectomy (NPDS) in patients with steroid-induced glaucoma. Methods. This was a retrospective interventional clinical study that included 60 eyes of 60 steroid-induced glaucoma patients that had undergone NPDS. Patients were followed up for 4 years. Data from the records was retrieved as regards corrected distance visual acuity (CDVA), intraocular pressure (IOP), visual field mean defect (dB), and number of antiglaucoma medications needed if any. Complete success of the surgical outcome was considered an IOP ≤ 21 mmHg with no antiglaucoma medications. Qualified success was considered an IOP ≤ 21 mmHg using antiglaucoma medications. Results. The mean age was 21.2 ± 8.5 years (ranged from 12 to 35 years). At 48 months, mean IOP was 13.6 ± 2.8 mmHg (range 11–23 mmHg). This represented 60% reduction of mean IOP from preoperative levels. One case had YAG laser goniopuncture. Three cases required needling followed by ab interno revision. Using ANOVA test, there was a statistically significant difference between preoperative and postoperative mean IOP values (P=0.032). Twelve, 16, and 20 patients required topical antiglaucoma medications at 24, 26, and 48 months postoperative, respectively. Conclusion. Primary nonpenetrating deep sclerectomy is a safe and an effective method of treating eyes with steroid-induced glaucoma. No major complications were encountered. After 4 years of follow-up, complete success rate was 56.7% and qualified success rate was 70%.

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Anatomical and Visual Outcome following Macular Hole Surgery at a Tertiary Eye Care Centre in Nepal

Journal of Nepal Medical Association ◽

10.31729/jnma.24 ◽

2011 ◽

Vol 51 (183) ◽

Author(s):

R Thapa ◽

G Paudyal

Keyword(s):

Visual Acuity ◽

Success Rate ◽

Macular Hole ◽

Vision Loss ◽

Case Series ◽

Eye Care ◽

Case Series Study ◽

The Mean ◽

Anatomical Success

Introduction: Macular hole (MH) leading to central vision loss is common in the elderly. This study aimed to explore the anatomical and functional outcome of MH surgery at a tertiary eye care setting in Nepal. Methods: This retrospective, interventional case series study included patients who had undergone MH treatment with pars plana vitrectomy, membrane peeling and perfluoropropane gas (C3F8) from 2007 January to 2010 August and had completed three months of follow up. The best corrected visual acuity (BCVA) and anatomical status of MH assessed with bio-microscopy and optical coherence tomography (OCT) at six weeks, three months and at the last follow-up following surgery were recorded. Results: A total of 36 cases with the age range of 11 - 73 years and the mean age of 53.2 years (19.3 S.D) were included in the study. The mean duration of decreased vision was 11.1 months (12.1 S.D). Idiopathic macular hole comprised of 31 cases (86.1 %) and traumatic of five cases (13.9 %). The mean follow-up period was 9.4 months. The MH closed in 27 cases (75 %) at six weeks and in 28 cases (77.8%) at three months and at the last follow-up. The vision had improved in 36 % of cases, with more than 2 lines in 27.8 %, and was stable in 27.7 % of cases during the the last follow-up. The anatomical success rate was higher in the idiopathic MH (80.65 %) than in the traumatic (60 %) and visual acuity improved in 45 % of cases in the idiopathic and 20 % in the traumatic cases. Conclusions: The overall anatomic success rate was 78 % and improvement in visual acuity was seen in one -third of cases. The success rate was higher among idiopathic MH than in traumatic. Keywords: Anatomical success, macular hole, perfluoropropane gas, visual acuity, vitrectomy

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Extended Myectomy for Hypertrophic Obstructive Cardiomyopathy

The Heart Surgery Forum ◽

10.1532/hsf98.20111185 ◽

2012 ◽

Vol 15 (5) ◽

pp. 251

Author(s):

Changqing Gao ◽

Chonglei Ren ◽

Cangsong Xiao ◽

Yang Wu ◽

Gang Wang ◽

...

Keyword(s):

Mitral Valve ◽

Left Ventricle ◽

Mitral Regurgitation ◽

Surgical Procedures ◽

Hypertrophic Obstructive Cardiomyopathy ◽

Systolic Anterior Motion ◽

Anterior Leaflet ◽

Septal Myectomy ◽

The Mean

Background: The purpose of this study was to summarize our experience of extended ventricular septal myectomy in patients with hypertrophic obstructive cardiomyopathy (HOCM).Methods: Thirty-eight patients (26 men, 12 women) with HOCM underwent extended ventricular septal myectomy. The mean age was 36.3 years (range, 18-64 years). Diagnosis was made by echocardiography. The mean (mean � SE) systolic gradient between the left ventricle (LV) and the aorta was 89.3 � 31.1 mm Hg (range, 50-184 mm Hg) according to echocardiographic assessments before the operations. Moderate or severe systolic anterior motion (SAM) of the anterior leaflet of the mitral valve was found in 38 cases, and mitral regurgitation was present in 29 cases. Extended ventricular septal myectomy was performed in all 38 cases. The results of the surgical procedures were evaluated intraoperatively with transesophageal echocardiography (TEE) and with transthoracic echocardiography (TTE) at 1 to 2 weeks after the operation. All patients were followed up with TTE after their operation.Results: All patients were discharged without complications. The TEE evaluations showed that the mean systolic gradient between the LV and the aorta decreased from 94.8 � 35.6 mm Hg preoperatively to 13.6 � 10.8 mm Hg postoperatively (P = .0000) and that the mean thickness of the ventricular septum decreased from 28.3 � 7.9 mm to 11.8 � 3.2 mm (P = .0000). Mitral regurgitation and SAM were significantly reduced or eliminated. During the follow-up, all patients promptly became completely asymptomatic or complained of mild effort dyspnea only, and syncope was abolished. TTE examinations showed that the postoperative pressure gradient either remained the same or diminished.Conclusions: Extended ventricular septal myectomy is mostly an effective method for patients with HOCM, and good surgical exposure and thorough excision of the hypertrophic septum are of paramount importance for a successful surgery.

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RESULTS OF INTRALESIONAL TRIAMCINOLONE ACETONIDE FOR CHALAZION TREATMENT

Journal of Medicine and Pharmacy ◽

10.34071/jmp.2011.5.13 ◽

2011 ◽

pp. 100-104

Author(s):

Thi Thu Nguyen ◽

Viet Hien Vo ◽

Thi Em Do

Keyword(s):

Success Rate ◽

Key Words ◽

Triamcinolone Acetonide ◽

Lower Eyelid ◽

Upper Eyelid ◽

Interventional Trial ◽

The Mean ◽

First Time

The study use intralesional triamcinolone acetonide injection proceduce for chalazion treatment.1. Objectives: To evaluate results of intralesional triamcinolone acetonide injection for chalazion treatment. 2. Method: This noncomparative prospective interventional trial included 72 chalazions of 61 patients. 3. Results: 61 patients (72 chalazions) with 19 males (31.1%) và 42 females (68.9%), the mean age was 24 ± 9,78 years. 31.1% patients was the first time chalazion and 68.9% patients was more than one times chalazion including 78.6% patients was recurrent at the first position and 21.4% patients occur at new position. 72 chalazions with 16 (22.2%) chalazions was treated before and 56 (77.8%) chalazions wasn’t done that. 72 chalazions with 49 chalazions (68.1%) are local in upper eyelid and 23 chalazions (31.9%) are local in lower eyelid. The mean of chalazion diameter is 6.99 ± 3.03mm. Intralesional triamcinolone acetonide is injected to treat 72 chalazions with 16 (22.2%) chalazions are injected through the route of skin and 56 (77.8%) chalazions are injected through the route of conjunctiva. After 2 weeks follow-up, the success rate was 93.1% and 6.9% failed. 4. Conclusion: intralesional triamcinolone acetonide injection for chalazion treatment is really effective. Key words: chalazion, intralesional triamcinolone acetonide.

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Surgical correction of severe congenital ptosis using a modified frontalis muscle advancement technique: A single-arm trial

European Journal of Ophthalmology ◽

10.1177/1120672121995754 ◽

2021 ◽

pp. 112067212199575

Author(s):

Lei Zhang ◽

Mingyu Ren ◽

Yuqing Yan ◽

Wenjuan Zhai ◽

Lihong Yang ◽

...

Keyword(s):

Success Rate ◽

Advancement Flap ◽

Orbicularis Muscle ◽

Congenital Ptosis ◽

Inferior Margin ◽

Field Of Vision ◽

Vertical Incision ◽

Registration Number ◽

The Mean

Purpose: To describe our experience with a modified frontal muscle advancement flap to treat patients with severe congenital ptosis. Methods: Analysis of the clinical charts of 154 patients who underwent a modified frontal muscle advancement flap. The FM was exposed by a crease incision. The FM flap was created by deep dissection between the orbicularis muscle and orbital septum from the skin crease incision to the supraorbital margin and subcutaneous dissection from the inferior margin of the eyebrow to 0.5 cm above the eyebrow. No vertical incision was made on the FM flap to ensure an intact flap wide enough to cover the entire upper tarsal plate. Contour, symmetry of height, marginal reflex distance (MRD1), and complications were assessed. Mean follow-up was 10 months. Results: The mean patient age was 7.6 ± 5.6 (range, 2–18) years. The mean MRD1 was 3.2 ± 1.3 mm after the operation. All bilateral cases achieved symmetry and optimal lid contour; 17 unilateral cases were under corrected, with a success rate of 89.0%. Complications such as entropion, exposure keratitis, FM paralysis, frontal hypoesthesia, severe haematoma, and entropion were not observed in our series. Conclusion: A modified frontal muscle advancement flap produced a high success rate with a clear field of vision, mild trauma, and few complications. This technique is relatively simple and should be considered for correcting severe congenital ptosis. Date of registration: 29-03-2020 Trial registration number: ChiCTR2000031364 Registration site: http://www.chictr.org/

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Unilateral lateral rectus recession is an effective surgery for intermittent exotropia in young children

BMC Ophthalmology ◽

10.1186/s12886-020-01778-2 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Oriel Spierer ◽

Abraham Spierer

Keyword(s):

Young Children ◽

Success Rate ◽

Lateral Rectus ◽

Intermittent Exotropia ◽

Age At Surgery ◽

Surgical Methods ◽

Before And After ◽

The Mean ◽

Consecutive Esotropia

Abstract Background Different surgical methods have been suggested for the correction of intermittent exotropia. Unilateral lateral rectus recession has been described as a surgical alternative for small and moderate-angle exotropia. In general, previous studies did not focus on the outcomes of unilateral lateral rectus recession in young children with intermittent exotropia. The purpose of this study is to evaluate the surgical outcomes of unilateral lateral rectus recession in the treatment of moderate-angle exotropia (≤ 25 PD (prism diopters)) in children. Methods The charts of all patients younger than 12 years of age with moderate-angle exotropia (up to 25 PD) who were operated during the years 2006–2018 were retrospectively reviewed. Fifty-eight patients underwent unilateral lateral rectus recession and had a minimum follow up of 6 months. The angle of exotropia (PD) before and after surgery and the success rate were documented. Results Mean age at surgery was 6.4 ± 1.9 (range 3.5–11.0) years. Exotropia improved from a preoperative angle of 21.4 ± 4.0 PD to 3.5 ± 5.9 PD postoperatively (p < 0.001). Success rate, defined as deviation of ≤ 10 PD, was achieved in 86.2%. There were 2 (3.4%) cases of overcorrection (consecutive esotropia). There were no intra- or postoperative complications. The mean follow-up duration after surgery was 2.3 ± 1.7 years. Conclusions In children with moderate angle exotropia, good postoperative success rate was achieved by performing unilateral lateral rectus recession.

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Corneal densitometry in patients with keratoconus undergoing intrastromal Ferrara ring implantation

European Journal of Ophthalmology ◽

10.1177/11206721211020631 ◽

2021 ◽

pp. 112067212110206

Author(s):

Pablo Felipe Rodrigues ◽

Bernardo Kaplan Moscovici ◽

Guilherme Ferrara ◽

Luciano Lamazales ◽

Marcela Mara Silva Freitas ◽

...

Keyword(s):

Visual Acuity ◽

Medical Records ◽

Spherical Equivalent ◽

Interventional Study ◽

Data Comparison ◽

Corneal Densitometry ◽

Corrected Visual Acuity ◽

Ring Segment ◽

The Mean

Objective: Evaluation of central corneal densitometry changes following Ferrara corneal ring segment implantation in patients with keratoconus, especially the correlation between corneal densitometry and keratometry. Methods: Retrospective, non-comparative, interventional study based on the review of medical records of patients diagnosed with keratoconus who underwent Ferrara corneal ring segment implantation. Pre and post-operative corneal densitometry measurements obtained with Pentacam HR (Oculus, Wetzlar, Germany) were analyzed. The follow-up time was 3 months, and data comparison was made, using specific statistical analysis, with the data of 3 months postoperatively. Results: The study sample consisted of 43 eyes of 36 patients. The mean corrected visual acuity improved from 0.82 LogMAR preoperatively (SD ± 0.33) to 0.19 LogMAR (SD ± 0.13) postoperatively. The mean spherical equivalent varied from −4.63 (SD ± 3.94) preoperatively to −2.16 (SD ± 2.63) postoperatively. Asphericity varied from −0.69 (SD ± 0.32) preoperatively to −0.27 (SD ± 0.31) postoperatively. The mean maximum K was 54.01D (SD ± 3.38) preoperatively and 51.50D (SD ± 2.90) postoperatively. The mean anterior densitometric value was 18.26 (SD ± 2.03) preoperatively and 17.66 (SD ± 1.84) postoperatively. Conclusion: Corneal densitometry is an interesting technology that should be studied in keratoconus patients. Our results suggest that the corneal densitometry in the cornea’s anterior layer reduces after ICRS implantation and correlates with corneal keratometry. Further studies should be performed to increase the knowledge in this field.

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A long term view of myringoplasty in children

The Journal of Laryngology & Otology ◽

10.1017/s0022215100113854 ◽

1990 ◽

Vol 104 (10) ◽

pp. 758-762 ◽

Cited By ~ 32

Author(s):

J. D. Blanshard ◽

A. K. Robson ◽

I. Smith ◽

A. R. Maw

Keyword(s):

Success Rate ◽

Significant Influence ◽

Hearing Gain ◽

Graft Take ◽

Late Failure ◽

Special Clinic ◽

Long Term Follow Up

AbstractFifty-nine type 1 tympanoplasties in children under 14 years of age were assessed by recall to a special follow-up clinic up to 15 years post-operatively. Overall 78 per cent of tympanic membranes were found to be intact with a late failure of grafts noted in 6 per cent of cases. An improvement in the audiological threshold was found in 51 per cent, 24 per cent were unchanged, the remaining 25 per cent suffered a deterioration which was seen both immediately post-operatively and thereafter until reviewed in the special clinic. The age at operation, size of the perforation, grade of surgeon carrying out the operation and prior adenoidectomy had no statistically significant influence on the success rate or the audiologicaloutcome. Revision procedures achieved similar graft take rates to the initial procedures but fared worse audiologically. We conclude that in the majority the operation was successful but hearing gain was not as good as expected and subject to late deterioration. A long term follow-up is important to detect this and other complications.

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