1.A mysterious case of bilateral stromal keratitis
Valenton Mario J ; Lim Bon Siong Ruben ; Lingao Michelle D
Philippine Journal of Ophthalmology 2006;31(1):40-42
OBJECTIVES: To describe a rare case of bilateral stromal keratitis and demonstrate the effectiveness of penetrating keratoplasty in the management of toxocara keratitis.
METHOD: This is a case report.
RESULTS: A 53-year-old male farmer had a 10-month history of bilateral corneal opacity, photophobia, redness, foreign body sensation, and eye pain. The diagnosis was central microbial keratitis with the following etiologies considered: Epstein-Barr virus, herpes simplex, fungal, syphilis, tuberculosis (TB), myobacteria other than TB, and acanthamoeba. Despite treatment with topical steroids and antibiotics, both eyes worsened. Penetrating keratoplasty markedly improved the patient's visual acuity. Histopathology of the left corneal button revealed toxocara keratitis.
CONCLUSION: Good history taking, complete systemic and ocular examinations, and a histopathology of the corneal tissues are vital to the diagnosis of toxocara keratitis. Penetrating keratoplasty was shown to be effective in its management. Emphasis is given on prevention to decrease the incidence of the disease.
Human
;
Male
;
Middle Aged
;
KERATITIS
;
CORNEAL TRANSPLANTATION
;
CASE REPORTS
2.Successful treatment of Acanthamoeba keratitis without anti-amoebic agents.
Archimedes L D AGAHAN ; Ruben B S LIM ; Mario J VALENTON
Annals of the Academy of Medicine, Singapore 2009;38(2):175-176
Acanthamoeba Keratitis
;
diagnosis
;
drug therapy
;
Anti-Inflammatory Agents, Non-Steroidal
;
administration & dosage
;
Atropine
;
administration & dosage
;
Cornea
;
pathology
;
Diagnosis, Differential
;
Diclofenac
;
administration & dosage
;
Drug Administration Schedule
;
Drug Therapy, Combination
;
Follow-Up Studies
;
Humans
;
Mydriatics
;
administration & dosage
;
Ophthalmic Solutions
;
Retrospective Studies
3.Dry heat sterilization of ophthalmic instruments using a commercially available convection broiler
German Gregory ; Valenton Mario J ; Siong Ruben Lim Bon ; Nievera Lilia Flor C.
Philippine Journal of Ophthalmology 2003;28(3):131-139
This study is proposed as an alternative method of sterilization in developing countries Purpose: To determine the efficacy of using a commercially available convection broiler in sterilization of ophthalmic surgical instruments Methods: Surgical ophthalmic instruments were contaminated artificially with Staphylococcus epidermidis, Pseudomonas aeruginosa, and Aspergillus. The instruments were subjected to heat sterilization using the convection broiler at different temperature settings. After which, the instruments were cultured with appropriate media to determine contamination Results: 15 minutes heat sterilization at 260 degrees centigrade was enough to sterilize the contaminated ophthalmic surgical instruments Conclusion: Heat sterilization using a convection broiler provide a cheaper yet effective method of sterilization. (Author)
Human
;
STERILIZATION, INFECTION CONTROL
5.Ocular bacterial flora and antibiotic sensitivity among Filipino patients undergoing routine cataract surgery
Terrence L. Cham ; Mario J. Valenton ; Ruben Lim Bon Siong
Philippine Journal of Ophthalmology 2009;34(1):19-22
Objective:
This study determined the most common normal lid-margin and
conjunctival bacterial flora, antibiotic sensitivity, and resistance patterns in
eyes of Filipinos scheduled for routine cataract surgery at a tertiary government
hospital.
Methods:
Lid-margin and conjunctival swab specimens were collected from patients
scheduled to undergo routine cataract-extraction surgery at the Department
of Ophthalmology and Visual Sciences of the University of the Philippines–
Philippine General Hospital. The specimens were cultured using standard
technique and those with bacterial growth were tested for antibiotic sensitivity
and resistance using the disc-diffusion method.
Results:
Sixty eyes of 30 patients were sampled, 17 females (57%) and 13 males
(43%), with a mean age of 61.4 12.5 years (range, 37 to 84). Of the 30
patients swabbed, 27 (90%) were culture positive. The most common organism
identified was Staphylococcus epidermidis (24/27, 89%). Bacillus sp. was identified
in 12 (44%) patients. Staphylococcus aureus was identified in 3 (12%) patients.
Results of antibiotic sensitivity testing revealed that 85% or more of the
coagulase-negative staphylococcus isolates were sensitive to moxifloxacin,
gatifloxacin, ciprofloxacin, vancomycin, gentamycin, tobramycin, and
chloramphenicol.
Conclusions
Staphylococcus epidermidis was the most frequently isolated organism in the
eyelid margin and conjunctiva of patients for routine cataract surgery. The
isolates showed high sensitivity to commonly prescribed topical antibiotic
preparations.
Eyelids
;
Conjunctiva