Treatment of uveitis •AST injection if Unilateral inf lammation If no response unilater al •Topical steroids •If no response after 2-3 weeks or f requent topical application needed t o control inf lammation Add oral NSAID if mild recurrence , despite low dose of topical steroid No resons e Multiple injection needed bilateral Oral Corticosteroids Mild cases controlled with Low dose prednisone 15 mg/day or less Sev ere inf lammation Begin high dose and taper No change may continue long term Non emergent Emergent risk of Immediate visual loss Mild cases requiring Moder ate inf lammation more than 15 mg/day f or more than 6-12 months despite corticosteroid therapy •Add MTX or AZA •Taper Pre dnisone to 15 mg/day •Continue f or 6-12 months •CsA may substitute f or MTX or AZA Especially on young patients who may want to hav e children Cy clophosphamide •Add cyclophosphamide Or chlorambucil •Slowly taper Prednisone f or 3months-1y ear •Add CsA •Continue f or 6-12 months •Consider adding MTX or AZA if Prednisone cannot be To 15 mg/day Suggested treatment scheme, one possible stepwise approach to ocular inflammation Non steroidal anti-inflammatory drugs Phospholipids inhibit corticosteroids Phosphlipase A2 Arachidonic acid NSAIDs Inhibit Cyclo-oxygenase Lipoxygenase Endoperoxidase Thromboxane A2 Prostacy clin PGE2 PGF2 PGd2 Action Anti inflammatory Analgesic Anti pyretic Inhibit platelet aggregation Indications CME Prevention of intraoperative miosis Post surgical inflammation Allergy Episcleritis Uveitis o NSAIDs have no role during episode of acute anterior uveitis o May be useful in long term management of recurrent anterior uveitis o Adjuvant therapy with systemic NSAIDs was shown to reduce inflammatory activity and allow reduction in dose of steroid in group of children with JRA associated uveitis o For posterior uveitis with CME, oral NSAIDs showed good results once combined with local steroids injection, once it been used for 6-12 months to prevent recurrence Dose and Route Topical TID-QID Oral o Non-selective o Selective COX2 inhibitor Celebrex 100-200 mg BID Vioxx 12.5-25-50 mg qd Side effect Topical o Irritation o Keratitis o Infiltrate o Thinning o Perforation Systemic o GI o CNS o Hematological o Renal o Hepatic Corticosteroids Mechanism of action The anti-inflammatory actions of corticosteroids involve phospholipase A2 inhibitory proteins called lipocortins, which control the biosynthesis of inflammatory mediators, such as prostaglandins and leukotrienes by inhibiting the release of arachidonic acid. Phenotypic effect of steroid includes: 1. Constrict blood vessels, and decrease vascular permeability. 2. Stabilization of intracellular lysosomal membrane and inhibition of expression of various damaging enzymes. 3. Stabilization of mast cells and basophil membrane is important in inhibiting the process of degranulation and subsequent release of histamine, bradykinin, platelet activating-factor, protease, and eosinophil, chemotactic factor. 4. Suppression of lymphocytes proliferation. 5. Reduction of circulating eosinophils and monocytes. 6. Inhibition of macrophage recruitment and migration. Suggested guidelines for use of prednisone for chronic ocular inflammation Initial dose 1mg /kg/day Maximum adult oral dose 60 to 80 mg/day Maintenance dose (adult) Tapering schedule ≤ 10mg/day over 40mg/day, decrease by 10 mg/day every 1-2 weeks 40-20mg/day decrease by 5 mg/day every 1-2 weeks 20-10 mg/day decrease by 2.5mg/day every 1-2weeks 10-0mg/day decrease by1-2.5 mg/day every Monitor Blood pressure, weight, and glucose every 3 months Lipids (cholesterols and triglycerides) annually Bone density within first 3 months and annually thereafter1-4weeks Supplemental treatment BMD measurement needed to be done in the first 3 months and if it decreased or we are treating post menopausal women supplement treatment needed But as a role any patient who are on ≥7.5 mg for 6 months, should receive supplement treatment Calcium 1500 mg daily and vitamin D 800 IU daily (all patients on >7.5 mg steroid longer than 6 months) Estrogens (postmenopausal women) Antiresorpative (residronate 2.5 to 5mg/day. Etidronate, Calcitonin) as needed In selected situations, where immediate effect is needed, some would begin with IV methylprednisolone at a dosage of 1 gm/day (over 30 to 60 mins to avoid arrhythmia, cardiovascular shock, myocardial infarction, and severe infection) for 3 days and then start oral prednisone. Typically high-dose oral steroid are continued for no longer than 1 month. If the patient disease worsens on high-dose prednisone, no response after 2-4 weeks, disease no completely quiet after 4 weeks with high-dose oral steroid, or if chronic suppression of disease requires more than 10mg/day of prednisone an immunosuppressive agents should started. Ocular inflammation varies in their responses to steroid, some do response to short duration oral steroid 3-12 weeks, other need longer duration 6-12 months. Children’s should not be on steroid longer than 3 months. Systemic side effect Musculoskeletal Myopathy Osteoporosis Aseptic necrosis ( pts on 60 mg/day for 1 months or 20mg/day for 6 months have are associated with 15% 20% risk of aseptic necrosis) Gastrointestinal ?Peptic ulcer ( 2 published studies showed that inc0idence of ulcer doesn’t increase by steroid and the use of H2 blocker is not necessary Pancreatitis Psychiatric disorders Pseudotumor cerebri Glaucoma Cataract Secondary infection Delay wound healing Mydriasis CNS Ocular Ptosis Tissue atrophy CVS/Renal HTN Na and water retention Hypokalemic alkalosis Metabolic Ketoacidosis DM Hyperosmolar coma Hyperlipidemia Obesity Endocrine Growth failure Amenorrhoea Suppression of hypothalamic-pituitary-adrenal system Suppression of immune system Agents commonly used to treat autoimmune inflammatory conditions Class Antimetabolites Type of Agen Folic acid analogue Purine analogue Names Methotrexate Azathioprine Mycophenolate mofetil 5 Fluorouracil Leflunomide (Arava) Pyrimidine analogue Alkylating agents Nitrogen mustards Natural products Antibiotics Cyclophosphamide Chlorambucil Cyclosporine Dapsone Tacrolimus Mitomycin Antibodies •AZA •Mycophenolate mofetil Antilymphocytes serum Anti-T-cells antibodies Gamma globulin MTX Alkylating agents Purine Ribo nucl eo tid e Deox yri bo nucl eoti de DNA RNA Pyramidine 5 Fluorouracil Leflunomide (Arava) IL 2 Activated CD4 cell CD4 cell CsA B-cell Corticosteroi Site of action of immunosuppressive agents Prot ein Indication of immunosuppressive medication Absolute Behcet disease with retinal involvement Sympathetic ophthalmia VKH RA with necrotizing Scleritis or PUK Wegener’s granulomatosis Relapsing polychondritis with scleritis JRA OCP Bilateral Mooren’s Serpiginous choroidopathy Relative Intermediate uveitis Retinal vasculitis Severs chronic iridocyclitis Questionable Intermediate uveitis in children Sarcoid uveitis High risk graft Antimetabolites I. Methotrexate ( Rheumatrex) Mechanism of action 1. Antimetabolite 2. Folic acid analogue 3. Reversibly inhibit the enzyme Dihydrofolate reducatse (which convert folic acid to tetrahydrofolic acid which is necessary for DNA replication 4. Tissue with a high cellular turnover such as hair follicles, fetal cells, gastrointestinal lining, bone marrow, and neoplasm are most sensitive 5. MTX is excreted unchanged by the kidney 6. Dosage doesn’t have to be adjusted in liver disease Indication 1. 2. 3. 4. JRA Scleritis secondary to connective disease Sympathetic ophthalmia systemic SLE, RA, and Psoriatic arthritis Suggested guidelines for use of MTX Initial dose Oral formulation 2.5 mg tablet most clinicians would start with 7.5mg/week in single Undivided dose, then increase the dose gradually to achieve an effect. It can be given orally, IM, or IV.usual therapeutic dose is15 mg/week It has slow in onset, it might takes 3 to 4 weeks to see anti-inflammatory effect. Maximum adult oral dose 25mg/week Maintenance dose (adult) ≤ 25mg/week Tapering schedule usually between 2.5-5 mg/week Monitor CBC and platelet count should be taken every 3-4 weeks WBC <3500 per mm3, and platelet level below 125000 per mm3 may necessitate MTX to be discontinued or stopped LFT must be monitored Q 3-4 weeks (serum transaminase, alkaline phophatase, and bilirubin level), if LFT increased in 2 separate tests, then MTX dose should be reduced or discontinued. If LFT conti to be high after MTX been stopped then liver biopsy is indicated. Some suggest screening for Hep B/C before starting MTX Avoid alcohol Folic acid 1 mg/day. Supplemental treatment Contraindication Neutropenia, thrombocytopenia, pregnancy, and breast feeding women Side effect 1. Hepatotoxicity, LFT increase in 15%, but hepatic cirrhosis occurs in only 0.1% 2. Neutropenia 3. Thrombocytopenia 4. Ulcerative stomatitis, occur in 20% and can be minimized by 5 mg folic acid weekly 5. Pruritis, urticaria, alopecia, and erythema multiform 6. Pneumonitis and pulmonary fibrosis 7. Teratgenic II. Azathioprine(Imuran) Mechanism of action 1. Purine analogue 2. Metabolized by the liver into 6-mercaptopurine, 3. Immunologically, it decrease the peripheral T and B lymphocytes, and reduce mixed lymphocytes reactivity, IL2 synthesis, and Ig M production Indication 1. Rarely in ophthalmology but have been tried in Behcet disease for ocular inflammation in combination with steroid. 2. OCP, also in combination with other medication 3. SLE, Psoriatic arthritis, Reiter syndrome, and Transplant. Suggested guidelines for use of Azathioprine Initial dose 1.5-2.5 mg/kg/day as single dose or BID Oral formulation 50 mg tablet some would start with 2.5-3 md/kg/day slow onset, up to 3-4 weeks rarely will be effective alone, usually will be used with steroid Dose should be decreased if used with allopurinol( because azathioprine metabolism is dependent on xanthine oxidase, which can be inhibited by allopurinol) Maximum adult oral dose 4mg/kg/day Maintenance dose (adult) Tapering schedule Monitor Therapeutic dose usually 2mg/kg/day Decrease by 25-50mg CBC, and platelet Q 3-4 weeks LFT Q 12 weeks ( if LFT increase by 1.5x normal then decrease the dose, if more than that then stop azathioprine) Supplemental treatment Contraindication Preexisting hepatic disease Active infection pregnancy Side effect 1. Neutropenia 2. Thrombocytopenia 3. Hepatic toxicity <2% 4. Malignancy risk esp non hodgkin lymphoma 5. GI upset (most common), nausea, vomiting, stomatitis. 6. Alopecia III. Mycophenolate mofetil (Cellcept) Mechanism of action 1. Purine analogue 2. Their major effects are on T and B lymphocytes. It prevent lymphocyte proliferation, suppress antibody synthesis, interferes with cellular adhesions to vascular endothelium, and decrease recruitment of leukocytes to sites of inflammation Indication 1. Limited experience in ocular inflammation hasn’t been used as sole drug, published studies showed it can be useful if used in combination with either steroid or cyclosporine to control graft rejection or ocular inflammation, the success was measured by being able to reduce the dose of steroid or cyclosporine but not stopping then, while we still control inflammation. 2. Most clinician use it as alternative to Azathioprine or Methotrexate when they are not tolerated 3. Systemic use for renal, cardiac transplant, and RA. Suggested guidelines for use of Cellcept Initial dose Oral formulation 250 mg capsule 500 mg capsule 200 mg/ml suspension Maximum adult oral dose Maintenance dose (adult) 500 mg BID expected onset 2 weeks to 3 months 1.5 gm BID Tapering schedule Monitor Supplemental treatment Caution CBC weekly for 4 weeks, then every 2 weeks for 2 months then monthly LFT every 3 months in patient with renal disorders and GI problems Side effect 1. Nausea, vomiting, and diarrhea in 31% 2. Leukopenia 19% 3. Lymphoma 1% 4. Non melanoma skin cancer 9% 5. Opportunistic infection Alkylating agents I. Cyclophosphamide (Cytoxan) Mechanism of action Nitrogen mustard derivative, alkylating agent Metabolize in the liver to an active metabolite that is capable of alkylating purines in DNA and RNA, resulting in cross linking. This cross linking result in the inability of DNA to properly separate during cell division, and subsequently the cell dies Cyclophosphamide inhibits both humoral and cellular immunity Indication OCP Behcet Necrotizing and non necrotizing Scleritis ( Wegener’s, RA, Relapsing polychondritis) Sympathetic ophthalmia Serpiginous choroiditis Refractory intermediate uveitis Mooren’s ulcer Systemic diseases…wegener’s granulomatosis (most common use in combination with steroid), SLE, RA, and cancer. Cyclophosphamide has rapid onset of action within days, and should be consider in sight threatening conditions, also can be used as IV for immediate effect Suggested guidelines of use of Cyclophosphamide Initial dose 1-5 mg/kg/day as single dose Oral formulation 25 mg tablet 40-50 mg/kg IV once or twice a week or 50 mg tablet monthly But in uveitis oral therapy was more effective than IV therapy Expected onset is 2-8weeks Maximum adult oral dose 3mg/kg/day Maintenance dose (adult) Tapering schedule Monitor Supplemental treatment Contraindication Therapeutic dose usually 2mg/kg/day Usually not longer than 6-12 months Decrease by 25-50mg CBC / Platelet q 1week , then after CBC stabilize, it can be done q 4 weeks (minimum WBC 3000 per mm3, Neutrophils ( minimum 1500-2000 per mm3 ) Once CBC decrease dose should decreased, but if WBC < 2500 hold the drug Urine analysis weekly then q 4 weeks for hematuria, which once discovered ,drug will discontinued, if after 4 weeks no resolution then consult urology Pregnancy, lactating women Side effect Leukopenia Thrombocytopenia Lymphopenia Hemorrhagic cystitis can lead to bladder Ca Alopecia in 50%, reversible Malignancy Pulmonary fibrosis GI problems Ovarian suppression ( age <25 yrs risk is 30%, >30 yrs risk is 50%) Testicular atrophy and azospermia o Cryopreservation of eggs and sperms may considered before starting Tx II. Chlorambucil (Leukeran) Mechanism of action Alkylating agent Slower in action than cyclophosphamide Metabolized in liver Clinical response in 3 weeks Indication Mainly used as steroid sparing agent, esp in patient who cant tolerate cyclophosphamide Behcet ( most common use in ophthalmology) Sympathetic ophthalmia Leukemia, non hodgkin lymphoma, and ovarian carcinoma. Suggested guidelines for use of chlorambucil Initial dose 0.1 mg/kg/day as single dose Oral formulation 2 mg tablet usually dose will increased by 2mg/day to maximum 18 mg/day expected onset 4-12 weeks Maximum adult oral dose 0.2 mg/kg/day or 18mg/day Maintenance dose (adult) Tapering schedule Monitor Therapeutic dose usually 2mg/day Usually not longer than 6-24 months Decrease by 25-50mg CBC / Platelet q 1week , then after CBC stabilize, it can be done q 4 weeks (minimum WBC 24003000 per mm3, Platelet ( minimum 100.000 per mm3 ) Supplemental treatment Contraindication Pregnancy, lactating women Side effect Leukopenia Thrombocytopenia Malignancy Ovarian failure and azospermia I. Cyclosporine (Sandimmune, Neoral) Mechanism of action An oil soluble fungal metabolite Main function to suppress T-cell activation as well as the synthesis of variety of cytokines, including IL2. The inhibitions of cytokines prevent clonal expansion of helper and cytotoxic T-cells. CsA also inhibits chemotaxis of inflammatory cells, especially eosinophils. Hematopoiesis and phagocytic cell functions are not affected Metabolized in the liver by cytochrome P450 Indication CsA has been used as sole therapy for uveitis cases with effective results Found to be superior to Colchicine for Behcet disease in Japan ( dose 10 mg /day) Found to be similar to steroid in term of efficacy for endogenous uveitis ( dose 10 mg/day) Was used in combination with oral steroid Behcet disease Bird shot retinochoroidopathy Sarcoidosis VKH Prophylaxis for high risk PKP Stem cells allograft Keratoconjunctivitis sicca Severe allergic eye diseases Necrotizing Scleritis Peripheral ulcerative keratitis Thygeson’s punctate keratitis Renal transplant, RA, and Psoriasis Suggested guidelines for use of CsA Initial dose Oral formulation Sandimmune 25 , 50, 100 mg capsule 100mg/ml oral suspension Neoral l25, 100 mg capsule (better 100 mg/ml oral suspension absorption) 2.5-5 mg/kg/day divided doses expected onset 2-6 weeks Maximum adult oral dose Maintenance dose (adult) 10 mg/kg/day Therapeutic dose usually 10mg/kg/day But this dose is nephrotoxic Most patient would need 2.5-5mg/kg/day + steroid for several years Tapering schedule Monitor Decrease by 0.5-1 mg/kg Blood pressure, urea, and creatinine should be checked q 2 weeks for first 3 months, then monthly thereafter, and then need to be checked after doses change Serum creatinine should not be allowed to increase more than 30% Some clinician monitor CsA blood level Supplemental treatment Contraindication Pregnancy, lactating women, malignancy, and compromised renal function Side effect Nephrotoxicity o Most serious o Occur mainly with 10mg/kg/day o Can be irreversible HTN Hyperuricemia Hepatotoxicity o Dose dependent and reversible Parasthesia, temperature hypersensitivity, nausea, vomiting, and tremor Hypertrichosis, gingival hyperplasia, oral ulcer and hirsutism Topical side effect: redness, irritation, tearing, and burning II. FK506 (Tacrolimus) (Prograf) Mechanism of action Tacrolimus is a macrolide antibiotic produced by streptomyces tsukubaensis. Inhibit activation of T lymphocytes by mechanism similar to that of cyclosporine Indication Cyclosporine sparing agent Behcet disease VKH SO Idiopathic retinal vasculitis Organ transplant Suggested guidelines for use of Tacrolimus Initial dose Oral formulation 0.5,1,5 mg capsule 5 mg/ml oral suspension Maximum adult oral dose Maintenance dose (adult) Tapering schedule Monitor Supplemental treatment Contraindication 0.05 mg/kg/day as single dose for uveitis 0.15-0.3 mg/kg/day for organ transplant 0.3 mg/kg/day 0.1-0.15% mg/kg/day BP monthly CBC , LFT, Renal function, electrolytes, glucose at least initially Pregnancy, lactating women Should never use with cyclosporine Side effect Renal impairment 28% Neurological symptoms 21% , headache, tremor, dizziness, forgetfulness, and seizure GI symptoms 19% Hyperglycemia 13% HTN Dapsone Mechanism of action Diaminodiphenylsulfone Antibacterial sulfonamide Influence on immune system is unclear Some evidence that it stabilize lysosomal membranes, decreasing the release of lysosomal enzymes Indication OCP Leprosy Relapsing polychondritis Malaria Dermatitis herpetiform Cutaneous leishmaniasis Dose and Route 25 mg BID for 1 week increase by 50 mg per day depending on therapeutic response and drug tolerance Response usually within 4 weeks of initiation of Tx Contraindication sulfa allergy G6PD deficiency Side effect Hemolytic anemia o Dose dependent o Most common adverse effect o Always present in dose >200-300 mg/day o Occurs after 4 weeks in normal individual o Occurs earlier and more severely with G6PD deficiency o G6PD level must be determined before initiation of the therapy Nausea Daclizumab (Zenapex) Mechanism of action IL2 receptor monoclonal antibody Suppress activated lymphocytes Dose and Route IV at usual dose of 1mg/kg every 2-4 weeks Indication Renal transplant rejection Sight threatening intermediate and posterior uveitis in combination with other immunosuppressive medication. One study only Treatment of noninfectious intermediate and posterior uveitis with the humanized anti-Tac mAb: a phase I/II clinical trial. Nussenblatt RB, Fortin E, Schiffman R, Rizzo L, Smith J, Van Veldhuisen P, Sran P, Yaffe A, Goldman CK, Waldmann TA, Whitcup SM. Laboratory of Immunology, National Institutes of Health, Bethesda, MD 20892-1858, USA. DrBob@intra.nei.nih.gov To evaluate the safety and potential therapeutic activity of humanized anti-IL-2 receptor mAb (Daclizumab) therapy in the treatment of patients with severe, sight-threatening, intermediate and posterior noninfectious uveitis, a nonrandomized, open-label, pilot study was performed. Patients with uveitis were treated with a minimum of 20 mg of prednisone, cyclosporine, antimetabolites, or any combination of these agents were eligible. Patients were weaned off their systemic immunosuppressive agents according to a standardized schedule, while ultimately receiving Daclizumab infusions every 4 weeks. Anti-IL-2 receptor antibody therapy, given intravenously with intervals of up to 4 weeks in lieu of standard immunosuppressive therapy, appeared to prevent the expression of severe sight-threatening intraocular inflammatory disease in 8 of 10 patients treated over a 12-month period, with noted improvements in visual acuity. One patient met a primary endpoint with a loss of vision of 10 letters or more from baseline in one eye and another patient discontinued therapy because of evidence of increased ocular inflammation. All patients were able to tolerate the study medications without the need for dose reduction. We report effective long-term use of anti-IL-2 therapy for an autoimmune indication. These initial findings would suggest that anti-IL-2 receptor therapy may be an effective therapeutic approach for uveitis and, by implication, other disorders with a predominant Th1 profile. Clinical trials with daclizumab Therapy for severe chronic uveitis is frequently long-term immunosuppression using systemic corticosteroids and cytotoxic agents, but side effects make long-term therapy difficult. A study recently published in the Journal of Autoimmunology by Nussenblatt et al suggests that intravenous anti-interleukin-2 (IL-2) receptor alpha (daclizumab) therapy remains effective for several years. The study also suggests that the medication can be administered subcutaneously with apparently therapeutic drug levels being attained. Nussenblatt and colleagues have been studying the efficacy of daclizumab for a number of years. Their first paper on this subject, published in 1999 in the Proceedings of the National Academy of Sciences USA, described how 10 patients were weaned off other immunomodulators and prednisone and switched to daclizumab infusions every 4 weeks. Patients were treated over a 12-month period, and in 8 of the 10, the therapy appeared to prevent further intraocular inflammatory disease and to result in improved visual acuity. The current study by Nussenblatt follows these patients in an open-label extension of the initial study. In this study, 7 of the 10 patients completed 4 years of IV therapy, and none discontinued medication because of side effects. The patients did not appear to be susceptible to opportunistic infections. The use of 6-week infusion intervals led to recurrence of uveitis, while 2- to 4-week intervals did not. In another portion of the study, the researchers treated a different group of five patients with subcutaneously administered daclizumab, and found that 4 of 5 could be weaned off their other immunomodulators by 12 weeks, and all patients were weaned off by 26 weeks. Papaliodis, Chu, and Foster also published a study of treatment with daclizumab in the April 2003 issue of Ophthalmology. In their study, 44% of patients had improvement in visual acuity, and 59% improved based on degree of inflammation. These data certainly suggest that a randomized clinical trial for daclizumab in uveitis is warranted. Only with further study on a larger patient group (and under masked conditions) can the relative merits and deficits of daclizumab be compared to existing immunomodulators and other biologics, such as infliximab. REFERENCES: Nussenblatt RB, Fortin E, Schiffman R, et al. Treatment of noninfectious intermediate and posterior uveitis with the humanized anti-Tac mAb: a phase I/II clinical trial. Proc Natl Acad Sci U S A. 1999;96:7462-7466. Nussenblatt RB, Thompson DJ, Li Z, et al. Humanized anti-interleukin-2 (IL-2) receptor alpha therapy: long-term results in uveitis patients and preliminary safety and activity data for establishing parameters for subcutaneous administration. J Autoimmun. 2003;21:283-293. Papaliodis GN, Chu D, Foster CS. Treatment of ocular inflammatory disorders with daclizumab. Ophthalmology. 2003;110:786-789. Etanercept (enbrel) Mechanism of action Tumor necrosis factor alpha/beta antagonist Competitive inhibitor that bind and inactivate TNF Indication RA JRA associated uveitis Dose and route 0.4 mg/kg , 25 mg SC dose twice weekly Side effect Infection Infliximab (Remicade) Mechanism of action Human-murine antibody to tumor necrosis factor , it neutralize the biological activity of TNF alpha by binding to the soluble and membranous forms of the TNF alpha Indication Crohn’s RA Dose and Route IV during a 2 hours period as single dose to achieve control on severe inflammation o Permanent loss of vision resulting from relapsing ocular inflammation occurs frequently in patients with Behcet's disease, despite intensive, chronic immunosuppressive therapy. Since tumour necrosis factor (TNF) might have an important pathogenetic role in Behcet's disease, we decided to give a single infusion of infliximab-a monoclonal antibody against TNF-to five patients with relapsing panuveitis, at the immediate onset of last relapse. Remission of ocular inflammation was evident within the first 24 h, and complete suppression was seen 7 days after treatment in all patients. No side-effects were noted. We suggest that infliximab is a rapid and effective new therapy for sightthreatening ocular inflammation in Behcet's disease. Dose 5mg/kg , second dose can be given after 2 weeks, third dose 4 weeks later, then asses patient response if patient had remission then relapse, u can repeat same regimen, but if there were no remission from the beginning then switch to another treatment. o PURPOSE: To determine the efficacy and safety of infliximab in the treatment of refractory posterior uveitis. DESIGN: Noncomparative interventional case series. PARTICIPANTS: Five patients with posterior uveitis were treated: 3 had Behcet's syndrome, and 2 had idiopathic posterior uveitis. INTERVENTIONS: Patients with sightthreatening uveitis refractory to other immunosuppressive agents were treated with infliximab. MAIN OUTCOME MEASURES: Intraocular inflammation, by using binocular indirect ophthalmoscopy score, retinal vasculitis, and visual acuity. Adverse effects of infliximab were documented. RESULTS: Within 2 weeks of the first infusion of infliximab, 4 of 5 patients showed marked improvement in vitreous haze and visual acuity. By the 6-month follow-up, the same four patients had achieved remission of posterior uveitis and had successfully withdrawn all other immunosuppressive therapy. Further infusions of infliximab were required in 3 patients. One patient developed ocular and systemic tuberculosis, which responded to antituberculous treatment. CONCLUSIONS: Infliximab is effective in the treatment of sight-threatening refractory posterior uveitis. However, patients should be thoroughly screened for tuberculosis before treatment and followed up closely during and after therapy with infliximab. Colchicine Mechanism of action Alkaloid derived from the autumn crocus Colchicum autumnale It has both antiinflammatory and antimiotic properties, mediated mainly through inhibition of micro tubular formation Depression of neutrophils motility, adhesiveness, chemotaxis, and lysosomal degranulation Indication In ophthalmology, it has been used as prophylaxis for ocular and systemic manifestation of Behcet disease in Japan, either alone or in combination with other immunosuppressive Gout Psoriasis Dose and Route 0.5- 0.6 mg orally 2-3 times daily Side effect GI upset Watery diarrhea Leukopenia Aplastic anaemia Thrombocytopenia Myopathy Alopecia azospermia