Steroid induced glaucoma after prk

Toxic glaucoma is open angle glaucoma with an unexplained significant rise of intraocular pressure following unknown pathogenesis. Intraocular pressure can sometimes reach 80 mmHg (11 kPa). It characteristically manifests as ciliary body inflammation and massive trabecular o edema that sometimes extends to Schlemm's canal. This condition is differentiated from malignant glaucoma by the presence of a deep and clear anterior chamber and a lack of aqueous misdirection. Also, the corneal appearance is not as hazy. A reduction in visual acuity can occur followed neuroretinal breakdown.

Diagnosis of reactive arthritis (including the condition formerly called Reiter’s syndrome) is mainly clinical.  There are no validated diagnostic criteria, however some guidance for diagnosis is available. [18, 19, 20, 10]   In 1995, the Third International Workshop on Reactive Arthritis established criteria for diagnosing reactive arthritis.  The main criteria involve the pattern of joint involvement and the timing of the onset of the condition (such as soon after an infection).  Diagnosis of Reiter’s syndrome has essentially been replaced with diagnosis of the broader category in which it resides:  Reactive Arthritis.

During conventional pharmacologic dose corticosteroid therapy, ACTH production is inhibited with subsequent suppression of cortisol production by the adrenal cortex. Recovery time for normal HPA activity is variable depending upon the dose and duration of treatment. During this time the patient is vulnerable to any stressful situation. Although it has been shown that there is considerably less adrenal suppression following a single morning dose of prednisolone (10 mg) as opposed to a quarter of that dose administered every six hours, there is evidence that some suppressive effect on adrenal activity may be carried over into the following day when pharmacologic doses are used. Further, it has been shown that a single dose of certain corticosteroids will produce adrenal cortical suppression for two or more days. Other corticoids, including methylprednisolone, hydrocortisone, prednisone, and prednisolone, are considered to be short acting (producing adrenal cortical suppression for 1¼ to 1½ days following a single dose) and thus are recommended for alternate day therapy.

Nadia: Sorry for your troubles. You have just described the course of a steroid responder. Your pressure was fine for the first few weeks, but after being on a corticosteroid for several weeks your pressure began to rise. If inflammation is well controlled, most surgeons stop the steroid or switch to a weaker steroid if the pressure is hard to control. If you are on a non-steroidal anti inflammatory (NSAID), it makes it easer to get off of the steroid since these drops will still help control inflammation when the steroid is stopped. Sometimes it takes several months for the steroid pressure elevation to resolve. During that time, maximum medical management is attempted. If a patient already has weakened nerves from glaucoma, sometimes a glaucoma surgery must be used to lower the pressure and protect vision.
God Bless,
Gary Foster

* Mydriatics and cycloplegics. While certainly not a systemic medication, it is worth noting that topical tropicamide may cause increased IOP via mechanisms other than angle closure. After examining IOP fluctuations in children given mydriatics, researchers found an average increase of 2mm Hg; however, a potential increase or decrease of 8mm Hg was documented in many patients with open angles. 27 The investigators concluded that some alteration in aqueous dynamics occurred upon dilation and, because of the variable effect on IOP (even without the presence of anterior segment complications), all patients who use mydriatics require observation. 27

Steroid induced glaucoma after prk

steroid induced glaucoma after prk

Nadia: Sorry for your troubles. You have just described the course of a steroid responder. Your pressure was fine for the first few weeks, but after being on a corticosteroid for several weeks your pressure began to rise. If inflammation is well controlled, most surgeons stop the steroid or switch to a weaker steroid if the pressure is hard to control. If you are on a non-steroidal anti inflammatory (NSAID), it makes it easer to get off of the steroid since these drops will still help control inflammation when the steroid is stopped. Sometimes it takes several months for the steroid pressure elevation to resolve. During that time, maximum medical management is attempted. If a patient already has weakened nerves from glaucoma, sometimes a glaucoma surgery must be used to lower the pressure and protect vision.
God Bless,
Gary Foster

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