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   2000| October-December  | Volume 48 | Issue 4  
 
 
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OPHTHALMOLOGY PRACTICE
Management of diabetic retinopathy
S Saxena, S Jalali, TA Meredith, NM Holekamp, D Kumar
October-December 2000, 48(4):321-30
PMID:11340894
Diabetic retinopathy remains a major cause of blindness despite increased understanding of this disease and identification of successful treatments. The Diabetic Retinopathy Study identified risk factors associated with a high risk of blindness and confirmed the benefits of panretinal photocoagulation. The Early Treatment Diabetic Retinopathy Study defined the retinal characteristics, indications of treatment and results of laser treatment of clinically significant macular oedema. The Diabetic Retinopathy Vitrectomy study established the benefits and timing of vitrectomy for non-clearing vitreous haemorrhage and severe proliferative diabetic retinopathy. The Diabetes Control and Complications Trial and the United Kingdom Prospective Diabetes Study have also demonstrated the value of tight control of blood sugar and blood pressure in diabetic retinopathy. These studies developed specific recommendations for the management of diabetic retinopathy. Optimum use of this information can minimize visual loss due to diabetic retinopathy.
  10,829 0 3
ORIGINAL ARTICLE
Visual field assessment in glaucoma: Comparative evaluation of manual Kinetic Goldmann Perimetry and Automated Static Perimetry
HC Agarwal, V Gulati, R Sihota
October-December 2000, 48(4):301-6
PMID:11340889
Purpose: To compare the detection and assessment of progression of visual field defects in primary open-angle glaucoma with manual suprathreshold perimetry on Goldmann perimeter and automated static threshold perimetry on Humphery visual field (HVF) analyzer. Methods: 105 eyes of 54 patients of primary open-angle glaucoma were followed up with 3-monthly perimetry on Goldmann perimeter and HVF analyzer, for a period of 9 months. Results: HVF analyzer picked up visual field defects in 48 (46%) eyes whereas Goldmann perimeter picked up visual field defects in 26 (25%) eyes. HVF analyzer demonstrated progression in 14 eyes whereas Goldmann perimeter detected progression in 7 eyes during follow up of 9 months. Conclusions: HVF analyzer is superior to Goldmann perimeter to document and to demonstrate progression of visual field defects in primary open-angle glaucoma.
  10,665 1 2
CURRENT OPHTHALMOLOGY
New approaches in the management of choroidal neovascular membrane in age-related macular degeneration.
L Verma, T Das, S Binder, WJ Heriot, B Kirchhof, P Venkatesh, I Krebs, U Stolba, C Jahn, H Feichtinger, L Kellner, H Krugluger, I Pawelka, U Frohner, A Kruger, W Li, HK Tewari
October-December 2000, 48(4):263-78
PMID:11340884
Age-related macular degeneration (AMD) is a leading cause of blindness in the elderly population. The prevalence is reported to be 1.2-1.4% in several population-based epidemiological studies. Currently 25-30 million people worldwide are blind due to AMD. With the aging world population it is bound to increase significantly, and could become a significant public health problem in next two decades, with serious socio-economic implications. Several strategies are today available to treat the wet form of AMD, which is responsible for significant visual loss. These were until recently confined to laser photocoagulation, and subretinal surgery, but today two other modalities, namely, radiation and photodynamic therapy, are available. These treatment modalities however, are aimed at preservation of vision only, and not at reversing the process of the disease. Further research on antiangiogenic drugs and gene therapy could significantly help AMD patients.
  8,764 5 10
ORIGINAL ARTICLE
Sodium bicarbonate - An alternative to hyaluronidase in ocular anaesthesia for cataract surgery
M Srinivasan, M Vamshidhar, R Gopal, Banushree
October-December 2000, 48(4):285-9
PMID:11340886
  8,247 12 1
Contact trans-scleral laser cyclophotocoagulation treatment for refractory glaucomas in the Indian population
V Gupta, HC Agarwal
October-December 2000, 48(4):295-300
PMID:11340888
Purpose: This study aimed to evaluate the clinical efficacy of contact diode trans-scleral cyclophotocoagulation (TSCPC) for treatment of refractory glaucomas. Method: Fifty two eyes of 52 patients, (post-penetrating keratoplasty glaucoma: 16 eyes; adherent leucoma with secondary glaucoma: 8 eyes; aphakic glaucoma: 6 eyes; neovascular glaucoma: 6 eyes; narrow angle glaucoma: 6 eyes; and other secondary glaucomas: 10 eyes) were followed up from 3.5 -18 months (average 12 months) after TSCPC. The treatment parameters using the contact G probe were - energy: 3-4J; area: 40 spots spread over 360; site: 1.2-1.5 mm posterior to limbus. Retreatments (22 eyes; 42%) were given whenever intraocular pressure (IOP) exceeded 22 mmHg despite maximum tolerable topical therapy. Results: IOP decreased from a baseline of 44.7 ( 7.3) mmHg to 15 ( 3.7) mmHg at first week and was 15.2 (8.2) mmHg at the last follow up. Successful control of IOP (<22mmHg) occurred in 30 (58%) eyes after a single treatment and in 48 (92%) eyes following retreatment. Complications included reduction in visual acuity from light perception (LP) only to no light perception (NLP) in two eyes and phthisis bulbi in one eye. Conclusion: Contact trans-scleral diode laser cyclophotocoagulation is effective in lowering IOP in eyes with intractable glaucoma with few side effects in Indian subjects.
  5,056 4 7
BRIEF REPORTS
Retinal pigment epithelial tears associated with idiopathic central serous chorioretinopathy
MP Shanmugam, M Bhende
October-December 2000, 48(4):315-7
PMID:11340893
  4,571 4 2
ORIGINAL ARTICLE
Comparison of optical and ultrasound pachometry
S Korah, R Thomas, J Muliyil
October-December 2000, 48(4):279-83
PMID:11340885
  4,443 1 7
BRIEF REPORTS
Acute panuveitis with haemorrhagic hypopyon as a presenting feature of Acquired Immunodeficiency Syndrome (AIDS)
J Biswas, TK Samanta, HN Madhavan, N Kumarasamy, S Solomon
October-December 2000, 48(4):311-2
PMID:11340891
  4,129 0 2
Immune recovery vitritis presenting as panuveitis following therapy with protease inhibitors
J Biswas, S Choudhry, Kumarasamy, S Solomon
October-December 2000, 48(4):313-5
PMID:11340892
  4,036 0 7
ORIGINAL ARTICLE
Raised platelet thiobarbituric acid-reacting substances in proliferative Eales' disease.
P Srivastava, S Saxena, VK Khanna, D Kumar, R Nath, PK Seth
October-December 2000, 48(4):307-9
PMID:11340890
BACKGROUND: Platelets are an elective site for oxidative stress owing to their high content of polyunsaturated fatty acid. Increased lipid peroxidation and elevated platelet thiobarbituric acid-reacting substances (TBARS) signal oxidative stress. This possibly leads to retinal neovascularization in Eales' disease. METHODS: TBARS levels were estimated in consecutive cases of Eales' disease with neovascularisation (n = 26), Eales' disease without neovascularisation (n = 17) and healthy controls (n = 17). RESULTS: Platelet TBARS levels in the cases of Eales' disease with neovascularisation, Eales' disease without neovascularisation, and healthy controls were 0.66 +/- 0.1, 0.57 +/- 0.11 and 0.42 +/- 0.14 n moles TBARS formed/hour/10(8) platelets respectively. Student's t-test showed a significant increase in platelet TBARS levels in cases with neovascularisation as compared to cases without neovascularization (p < 0.05) and healthy controls (p < 0.01). CONCLUSION: The increase in platelet TBARS levels in proliferative Eales' disease is consistent with an emerging view that lipid peroxides may be associated with retinal neovascularisation.
  3,820 0 7
Keratocyte loss in Acanihamoeba Keratitis: Phagocytosis, necrosis or apoptosis?
GK Vemuganti, S Sharma, S Athmanathan, P Garg
October-December 2000, 48(4):291-4
PMID:11340887
Purpose: Pathogenesis of Acanthamoeba keratitis involves breakdown of epithelial barrier, stromal invasion by Acanthamoeba, loss of keratocytes, inflammatory response and finally stromal necrosis. The loss of keratocytes, believed to be due to the phagocytic activity of the parasite, occurs disproportionate to and independent of the parasite load, thereby suggesting additional modes of cell loss. To test our hypothesis that the loss of keratocytes in Acanthamoeba keratitis is due to apoptosis, we did both histology and histochemistry on the corneal tissues. Methods: Routine Haematoxylin and Eosin, Gomori's Methenamine Silver and Periodic acid Schiff stained sections of five corneal tissues from penetrating keratoplasty and eviscerated eyes were reviewed. TUNEL staining was done for morphological detection of apoptosis in three cases, using formalin-fixed, paraffin-processed tissues. Results: Histological changes were epithelial ulceration, loss of keratocytes in all layers, inflammation in anterior two-thirds of the stroma with necrosis, and deeper quiet stroma. Acanthamoeba trophozoites were found in the anterior stroma while the cysts were more in the deeper stroma, with minimal or no inflammatory response. TUNEL staining was positive in keratocytic nuclei in all layers. Conclusions: This study demonstrates that one of the modes of keratocyte loss in Acanthamoeba keratitis is by apoptosis, possibly in addition to the necrotic process and phagocytic activity of the parasite. The death of inflammatory cells also appears to be mediated by apoptosis.
  3,740 0 4
LETTER TO EDITOR
An unusual presentation of orbital cysticercosis
S Vashisht, S Ahuja
October-December 2000, 48(4):331-2
PMID:11340896
  2,832 4 1
EDITORIAL
Medical ethics - Some thoughts
PN Nagpal
October-December 2000, 48(4):260-1
PMID:11340883
  2,712 0 -
LETTER TO EDITOR
Ascaris lumbricoides in the lacrimal passage.
D Garg, M Khurana
October-December 2000, 48(4):331-331
PMID:11340895
  2,499 0 -