1.Reflections on the eye bank thirty years hence
Philippine Journal of Ophthalmology 2024;49(1):4-7
Professor Salvador Salceda described the
history of Philippine eye banking as “a fascinating if
not frustrating one”. This is evident in his
Geminiano de Ocampo Medical Research
Foundation Centennial Lecture where he traced the
ebb and flow of Philippine eye banking from 1948
until the birth of the Eye Bank Foundation of the
Philippines in 1994 and the start of operations of its
Medical Eye Bank in 1995.1
The story of Philippine eye banking remains a
fascinating one, but it has fortunately also been
blessed with many moments of success and
satisfaction even while still laden with frustration.
In an editorial about the Eye Bank in 2005, I
wrote that “while the achievements after ten years of
operations can be considered a success story, we have
really only started to plant the seeds”.2 And now,
thirty years hence, after the COVID-19 pandemic
that saw the number of cornea retrieval procedures
plunge throughout the world, I believe we are starting
to reap the harvest from the seeds planted
throughout the last three decades.
Eye Banks
2.Analysis of Donors Through the Central Eye Bank.
Seung Lyung UHM ; Sung Kun CHUNG ; Yoon Won MYONG ; Sang Wooik RHEE
Journal of the Korean Ophthalmological Society 1991;32(7):594-603
The authors analyzed 1867 donor eyes which were obtained from Central Eye Bank at St Mary's Hospital from Jan. 1977 to Aug. 1990. 1. 658 donors(68.7%) were female and 539(56.4%) were above 60 years of age. 2. The most common cause of death was circulatory disease(29.4%), followed by respiratory disease(20.4%) and tumor(13.7%) 3. In death to enucleation time, sixty-eight percent were below 6 hours and twelve percent were between 6 and 12 hours. 4. The most common source of donation was KOT DONG NAE(57.8%), followed by a charity institute(35.4%) and register(4.7%). 5. 982 eyes were used for research; of those, 520 eyes (52.9%) were used for research because of the cause of death.
Cause of Death
;
Charities
;
Eye Banks*
;
Female
;
Humans
;
Tissue Donors*
3.Lyophilized Dura Mater Patch Graft in Glaucoma Valve Implantation.
Journal of the Korean Ophthalmological Society 1998;39(8):1843-1848
This study was performed to know effectiveness and safety of cadaveric lyophilized dura mater grafts(Lyodura, B.Braun Melsungen, Germany) to cover glaucoma implant tube. Tewnty-seven eyes of 25 patients who underwent glaucoma implant surgery between April 1996 and September 1997 received a lyophilized dura mater patch graft to cover the subconjunctival portion of the tube and then followed up for clinical signs. The mean follow up visit was 10.3 months (range: 5-18 months). All eyes tolerated the lyophilized dura mater grafts well without clinical signs of graft related conjunctival, scleral, of intraocular inflammation. And no conjunctival erosion or melting of the graft was observed. The result of this study suggests that preserved dura mater is maybe a reasonable alternative to eye bank sclera for use in glaucoma implant surgery.
Cadaver
;
Dura Mater*
;
Eye Banks
;
Follow-Up Studies
;
Freezing
;
Glaucoma*
;
Humans
;
Inflammation
;
Sclera
;
Transplants*
4.Difference of Corneal Thickness in Enucleated Eye.
Seong Hwan KIM ; Sung Kun CHUNG ; Yoon Won MYONG
Journal of the Korean Ophthalmological Society 1998;39(7):1334-1339
The maintenance of corneal endothelial cells is essential for success of corneal transplantation. Endothelial cell count by specular microscope and measurement of donor corneal thickness is useful in measuring the function of cornea. We studied difference of corneal thickness in central and peripheral corneal region in enucleated eye. We measured corneal thickness of 48 eyes(48 persons) with ultrasound pachymetry that were presented to The Eye Bank of Catholic University Medical College. Average age was 61.42+/-16.12 years and average time was 163.02+/-102.52 minutes until measurement of corneal thickness after death. Increased amount of corneal thickness was 136.73+/-101.44micrometer in center and 61.37+/135.46micrometer in periphery compared with normal average corneal thickness. According to these results, corneal edema due to functional loss of endothelial cells after death lead to increased corneal thickness, especially in central region being more statistically significant than peripheral region (p=0.002).
Cornea
;
Corneal Edema
;
Corneal Transplantation
;
Endothelial Cells
;
Eye Banks
;
Humans
;
Tissue Donors
;
Ultrasonography
5.Analysis of The Test Results about The Disease Possibly Transmitted by Donor Eye.
Hae Kyong HAN ; Yoon Won MYONG
Journal of the Korean Ophthalmological Society 1995;36(8):1302-1306
We analyzed the result of the tests about HBs Ag, HCv Ag, HIV Ag and VDRL in the blood of the donor and evaluated sex and age distribution, cause of death of the donor, which were obtained from Central Eye Bank at St. Mary's Hospital from January 1, 1993 to December 31, 1994. 1. Hepatitis B surface Ag in the blood was positive in 13 donors(4.80%) and Hepatitis C Ag was in 4 donors(1.48%). 2. VDRL test in the blood was positive in 11 donors(4.06%) and HIV Ag was in 1 donor(0.37%). 3. In sex and age distribution, 128 donors(47.23%) were male and 3 donors(52.77%) were from 71 to 80 years was the major group of donors(67 donors: 24.72%). 4. The most common cause of death was respiratory disease(94 donors: 34.69%) and then tumor(76 donors: 28.04%), circulatory disease(66 donors: 24.35%), metabolic disease (19 donors: 7.01%), infection(9 donors: 3.32%) and trauma(7 donors: 2.58%).
Age Distribution
;
Cause of Death
;
Eye Banks
;
Hepatitis B
;
Hepatitis C
;
HIV
;
Humans
;
Male
;
Metabolic Diseases
;
Tissue Donors*
6.Clinical Observation of Corneal Graft: An Interim Report of 25 Keratoplasties.
In Sun SHIN ; Jae Ho KIM ; Sang Min KIM
Journal of the Korean Ophthalmological Society 1969;10(3):9-17
Authors performed 25 corneal grafts in 24 patients since the inauguration of The Central Eye Bank, attached to the Department of Ophthalmology, St. Mary's Hospital, Catholic Medical College, in April 19, 1967. Method and results of these cases are as follows; METHOD: In technique of surgery, the grafts in most of the cases were 7 mm in diameter(Table 3), in two types of penetrating and lamellar corneal grafts(Table 4). The donor material came from patient age group of 51-60 years old in most and was used within 24 hours after death (Table 5). In most cases we placed 12 interrupted sutures except of two cases for continuous suture by 8-0 virgin silks. Preoperative and postoperative cares were routine with systemic dexamethasone, 7.0mg a day was given routinely on the 5 th postoperative day for 30-50 days because of prevention of graft rejection. RESULTS AND SUMMARY: Table 7 summbrizes the results of our observation. Nineteen of the 25 grafts remained clear. And there was improved vision above 20/200 in ten eyes out of nineteen clear grafts. Table 10 lists the reasons why nine clear grafts did not improve vision. Postoperative complications occurred in fourteen grafts (Table 11). Penetrating corneal grafts for adherent leucoma courneae, staphyloma corneae and corneal scars from alkaline burn were failed to maintaining the clear graft. The donor material, the recipient cornea, graft rejection as a complication and its prevantion were discussed. ACKNOWLEDGEMENTS: We wish to express our sincere gratitude to an those who have guided in carrying out the present investigation. In particular, We are jndebted to Dr. Bon Sool Koo, Former Chief and Professor, Department of Ophthalmology, Catholic Medical College. Dr. Sang Wook Rhee. Chief and Associate Professor, Department of Ophthalmology, Catholic Medical College.
Burns
;
Cicatrix
;
Cornea
;
Corneal Transplantation*
;
Dexamethasone
;
Eye Banks
;
Graft Rejection
;
Humans
;
Ophthalmology
;
Postoperative Complications
;
Silk
;
Sutures
;
Tissue Donors
;
Transplants*
7.Protective Effects of Viscoelastic Substances on air Bubble Damage During Phacoemulsification.
Moon Jung KIM ; Jung Won PARK ; Shin Jung KANG ; Hyung Lae KIM ; Jae Bum LEE ; Eung Kweon KIM
Journal of the Korean Ophthalmological Society 2002;43(11):2273-2279
PURPOSE: To determine whether viscoelastic materials are effective to protect the corneal endothelium from air bubble damage. METHODS: Human eye bank (n=12) and rabbit (n=22) eyes underwent a standardized phacoemulsification procedure with or without viscoelastic material [1% sodium hyaluronate (Healon(R)), 1.4% sodium hyaluronate (Healon GV(R)), 3% sodium hyaluronate with 4% chondroitin sulfate (Viscoat(R))]. The integrity of the endothelium was examined after the procedure with F-actin staining and scanning electron microscopy (SEM). RESULTS: In the phacoemulsification experiment without viscoelastic material, with Healon, and with Healon GV, the endothelium of both human and rabbit corneas had many areas of cell loss in a pattern consistent with air bubble damage. But with Viscoat, endothelial cells remained intact. CONCLUSIONS: We found that Viscoat was effective to protect the endothelium from air bubble damage. Viscoat seems to protect the endothelium by acting as a physical barrier.
Actins
;
Chondroitin Sulfates
;
Cornea
;
Endothelial Cells
;
Endothelium
;
Endothelium, Corneal
;
Eye Banks
;
Humans
;
Hyaluronic Acid
;
Microscopy, Electron, Scanning
;
Phacoemulsification*
;
Viscoelastic Substances*
8.Penetration of Acanthamoeba Lugdunensis into the Corneal Epithelium in Organ Cultured Human Cornea: A Scanning and Transmission Electron Microscopy Study.
Journal of the Korean Ophthalmological Society 1999;40(6):1473-1479
The purpose of this study was to investigate the process of Acanthamoeba penetration into the organ-cultured human cornea by scanning and transmission electron microscopy. Human cornea was obtained through the eye bank of Catholic Medical Center and cultured in Optisol solution at at37degrees C. Acanthamoeba lugdunensis was cultured on non-nutrient agar plate and collected to make suspension in concentration of 1 x 106/ml.100 microliterof amoeba suspension was added to the epithelial surface of cultured cornea and each cornea was incubated for 48 and 120 hours. Each cornea was examined by scanning and transmission electron microscopy at each time point. In scanning electron microscopy, Acanthamoeba penetrated into the deep epithelial layer through the intercellular space with progressive epithelial breakdown. In transmission electron microscopically, Acanthamoebapene-trated through the intercellular space of the superficial corneal epithelium and reached to the basement membrane of basal corneal epithelium. Penetrating trophozoites had numerous electronense, mineral-like deposits in their cytoplasm and secreted enzyme-like materials. In conclusion, Acanthamoebae penetrated through the intercellular space of the corneal epithelium by their locomotion and migrated into the deep epithelial layer with secreation of enzyme-like materials and phagocytosis until they reached to the basement membrane of the basal corneal epithelium.
Acanthamoeba*
;
Agar
;
Amoeba
;
Basement Membrane
;
Cornea*
;
Cytoplasm
;
Epithelium, Corneal*
;
Extracellular Space
;
Eye Banks
;
Humans*
;
Locomotion
;
Microscopy, Electron, Scanning
;
Microscopy, Electron, Transmission*
;
Organ Culture Techniques
;
Phagocytosis
;
Trophozoites
9.Analysis of Donor Eye Contamination.
Dong Soo KIM ; Sung Kun CHUNG ; Sang Wook RHEE
Journal of the Korean Ophthalmological Society 1992;33(3):203-208
We evaluated sex and age distribution, cause of death, death to enucleation time and contamination and viral (HBs Ag) infection of 211 donor eyes which were obtained from Central Eye Bank at St. Mary's Hospital from April 1, 1990 to September 30, 1991. 1. In sex and age distribution, 112 (53.1 %) donors were male, and 121 (57.3%) donors were above 61 years of age. The age group from 71 to 80 years was the most common (47 donors; 22.3%). 2. The most common cause of death was respiratory disease (75 donors; 35.6%), and then circulatory disease (53 donors; 25.1 %), tumor (35 donors; 16.6%) and infectious disease ( 29 donors; 13.7%). 3. 197 (93.4%) donor eyes were required within 6 hours from death to enucleation. 4. The conjunctival and limbal cultures of 211 donor eyes which were irrigated by 0.3% gentamicin eyedrop solution after extraction were positive in 56 eyes (26.5%). 5. The most prevailing cultured organism was Staphylococcus aureus (14 eyes; 25.0%). 6. Hepatitis B surface antigen in aqueous humor of all donor eyes was negative.
Age Distribution
;
Aqueous Humor
;
Cause of Death
;
Communicable Diseases
;
Eye Banks
;
Gentamicins
;
Hepatitis B Surface Antigens
;
Humans
;
Male
;
Staphylococcus aureus
;
Tissue Donors*
10.Analysis of Donor Eye Contamination.
Dong Soo KIM ; Sung Kun CHUNG ; Sang Wook RHEE
Journal of the Korean Ophthalmological Society 1992;33(3):203-208
We evaluated sex and age distribution, cause of death, death to enucleation time and contamination and viral (HBs Ag) infection of 211 donor eyes which were obtained from Central Eye Bank at St. Mary's Hospital from April 1, 1990 to September 30, 1991. 1. In sex and age distribution, 112 (53.1 %) donors were male, and 121 (57.3%) donors were above 61 years of age. The age group from 71 to 80 years was the most common (47 donors; 22.3%). 2. The most common cause of death was respiratory disease (75 donors; 35.6%), and then circulatory disease (53 donors; 25.1 %), tumor (35 donors; 16.6%) and infectious disease ( 29 donors; 13.7%). 3. 197 (93.4%) donor eyes were required within 6 hours from death to enucleation. 4. The conjunctival and limbal cultures of 211 donor eyes which were irrigated by 0.3% gentamicin eyedrop solution after extraction were positive in 56 eyes (26.5%). 5. The most prevailing cultured organism was Staphylococcus aureus (14 eyes; 25.0%). 6. Hepatitis B surface antigen in aqueous humor of all donor eyes was negative.
Age Distribution
;
Aqueous Humor
;
Cause of Death
;
Communicable Diseases
;
Eye Banks
;
Gentamicins
;
Hepatitis B Surface Antigens
;
Humans
;
Male
;
Staphylococcus aureus
;
Tissue Donors*