to find a central scotoma for color, and cases are on record in which the finding of such a scotoma proved to be the first step toward a correct diagnosis. To what an extent a periostitis is responsible for these symptoms we do not know, but when the retrobulbar space is greatly en- croached upon the exophthalmos usually is directly forward. Exophthalmos Due to Tenonitis A rather slight, acute exophthalmos, with more or less prostration and fever, an eyeball exquisitely tender to the touch and very painful whenever an attempt is made to move it, and a pale yellow chemosis, are the characteristic signs of a tenonitis, which may be either serous or purulent. In the serous form we usually are able to obtain a history of rheumatism, and the diagnosis is made certain if the symptoms subside in a few days under antirheumatic treatment. The symptoms are more violent in the purulent form, which may be caused by septic infection after an operation like one for strabismus, or of a wound that has opened Tenon’s capsule, but quite often it follows influenza. It may cause an optic neuritis, or a purulent iridocyclitis, or the latter disease may give rise to a purulent tenonitis. Exophthalmos Caused by Cerebral Disturbances An exophthalmos associated with the serious cerebral disturb- ances of sinus thrombosis is seldom seen, but when it occurs it usually indicates a septic thrombosis of the cavernous sinus. When the thrombosis is primarily of otitic origin an edema at the posterior margin of the mastoid aids in the diagnosis. Other ocular symptoms met with in thrombosis of the cavernous sinus are choked disk, optic neuritis, and pareses of the extrinsic muscles of the eye. Conjugate deviations are rare. Thrombosis of the longitudinal sinus sometimes occurs after debilitating diseases, but this produces exophthalmos only when the thrombus has extended to the cavernous sinus; then we may have conjugate deviations of the eyes, or spasmodic movements of them caused by the irritation of the cerebral cortex. The cavernous sinus is the one most apt to become thrombosed after erysipelas, and after diseases of the frontal and sphenoidal sinuses, so it is of practical importance for us to know that when the exophthalmos followed the grave cerebral symptoms the thrombosis is extending from within outward, while if the orbital symptoms appeared first a thrombo- phlebitis has spread from the orbit to the cavernous sinus, for such a thrombus may originate from an orbital cellulitis.<Callout type="warning" title="Warning">Severe exophthalmos can indicate serious underlying conditions like sinus thrombosis or cerebral disturbances.</Callout> <Callout type="important" title="Important">Always consider the patient's full medical history when diagnosing exophthalmos symptoms.</Callout>
Key Takeaways
- Examine for central scotomas to aid in diagnosis.
- Tenonitis can present with acute exophthalmos, fever, and chemosis.
- Cerebral disturbances like sinus thrombosis may cause exophthalmos.
Practical Tips
- Take a detailed medical history from the patient to identify potential causes of exophthalmos.
- Be vigilant for signs of septic infections or post-operative complications in patients with tenonitis.
- Look for associated symptoms like optic neuritis and pareses when diagnosing cerebral disturbances.
Warnings & Risks
Warning
Severe exophthalmos can indicate serious underlying conditions like sinus thrombosis or cerebral disturbances.
Incorrect diagnosis of tenonitis as a serous form may delay appropriate treatment if it becomes purulent. - Failure to recognize the signs of cavernous sinus thrombosis could lead to delayed intervention and worsened patient outcomes.
Modern Application
While the specific diseases discussed in this chapter are less common today, the principles of thorough diagnosis and considering a wide range of symptoms still apply. Modern emergency responders should be aware of these historical conditions as they may present similarly to other ocular or neurological issues.
Frequently Asked Questions
Q: What are the characteristic signs of tenonitis?
The characteristic signs of tenonitis include a rather slight, acute exophthalmos with more or less prostration and fever, an eyeball that is exquisitely tender to the touch and very painful when moved, and a pale yellow chemosis. The diagnosis can be confirmed if symptoms subside under antirheumatic treatment in the serous form.
Q: How does sinus thrombosis manifest as exophthalmos?
Sinus thrombosis, especially when septic in origin, can cause exophthalmos. This is usually a sign of a septic thrombosis of the cavernous sinus, which may also present with other ocular symptoms like choked disk and optic neuritis.
Q: What should a responder look for when diagnosing exophthalmos caused by cerebral disturbances?
When diagnosing exophthalmos associated with cerebral disturbances, responders should look for signs of serious conditions like sinus thrombosis. Other symptoms to consider include choked disk, optic neuritis, and pareses of the extrinsic muscles of the eye.