[The significance of surgical anatomy in lateral orbital wall decompression]

The article reviews data on the anatomical and topographic features of the lateral wall in the context of performing orbital surgery and presents a description of the surgical areas of the lateral wall that are most important for increasing the volume of the orbit: the lacrimal keyhole, the sphenoid door jamb, and the basin of the inferior orbital fissure. Particular attention is given to the topographic anatomy of the sphenoid door jamb as the most promising area for orbital decompression and transorbital access to the skull base.

[Tarsorrhaphy in rehabilitation of patients with thyroid eye disease]

PURPOSE

To evaluate the role of tarsorrhaphy and its effectiveness in the treatment of patients with thyroid eye disease (TED).

MATERIAL AND METHODS

The study identified the patients who required tarsorrhaphy for corneal lesions associated with TED among the total number of 457 patients who underwent tarsorrhaphy at the Research Institute of Eye Diseases over the past 20 years.

RESULTS

Overall, 477 tarsorrhaphy surgeries (457 patients) were performed, including temporary and permanent, partial and complete. The corneal involvement in TED was the indication for tarsorrhaphy in 81 patients (101 tarsorrhaphies). TED patients were divided depending on the date of operation, and it was found that 61 tarsorrhaphies were performed in the period from 2000 to 2009, and 40 similar interventions were performed in the period from 2010 to 2019.

CONCLUSION

The reduction in the number of tarsorrhaphy surgeries in patients with TED in the last decade due to improvement of techniques for bony decompression of the orbit and increase in the number of these operations allowed significant reduction of the degree of proptosis and, as a consequence, the exposure surface area of the eye. However, despite all the successes achieved in orbital surgery, tarsorrhaphy still remains an affordable technique that can always be used in case of corneal lesions in thyroid eye disease.

[Efficacy of transethmoidal orbital decompression in patients with dysthyroid optic neuropathy]

OBJECTIVES

To estimate efficacy and safety of endoscopic orbital decompression in patients with dysthyroid optic neuropathy (DON).

MATERIAL AND METHODS

19 patients aged 54.8±7.1 y.o. with DON were enrolled into the study.

RESULTS

Visual acuity was from counting fingers till 0.9 (0.4±0.28) before surgery, it increased till 0.7±0.2 (p<0.05) after surgery. The amount of correct Ishihara plates increased from 5.8±7 till 13.3±7.6 (p<0.05). Exophthalmos reduced by 1.7 mm (p<0.05). Significant reduce of orbital inflammation was noted as well.

CONCLUSIONS

This study is the first study of this kind in Russian Federation. Obtained results showed high efficacy and safety of endoscopic orbital decompression in patients with DON.

[Dysthyroid optic neuropathy: surgical treatment potential]

PURPOSE

To evaluate the effectiveness of bony orbital decompression in patients with dysthyroid optic neuropathy (DON).

MATERIAL AND METHODS

The study analyzed 255 patients with thyroid eye disease (TED) and bony orbital decompression. Those among them who had DON as an indication for surgery were investigated further. Patients underwent standard ophthalmological examination, computer perimetry, color vision assessment using Ishihara tables, relative afferent pupillary defect (RAPD), computed tomography (CT) of the orbit, and in some cases optical coherence tomography (OCT) of the optic nerve.

RESULTS

Final analysis included 31 patients (52 eyes). On 13 orbits, only lateral wall decompression was performed, and medial wall decompression was the only intervention in 7 orbits. In other cases, these techniques were performed either simultaneously - in 14 orbits, or alternately - in 18 orbits. In the postoperative period, all patients showed significant positive dynamics in terms of visual acuity, visual field, and proptosis. In all cases, decrease of the amount of orbital inflammation was observed. Exophthalmos significantly decreased after surgery and averaged 20.5±3.1 mm, which is 4.7 mm less than the initial one. All changes were statistically significant (p<0.01).

CONCLUSION

Bony orbital decompression is an effective and safe treatment option for DON resistant to high doses of glucocorticoids. In the vast majority of cases, this intervention is the only way to improve and stabilize visual function in this severe category of patients.

[Bony orbital decompression in the treatment of endocrine ophthalmopathy]

The article reveiws the problems of bony orbital decompression for thyroid-related orbitopathy. Indications for this kind of surgery and different approaches are discussed. Advantages and limitations of each method are analyzed. Special attention is paid to complications of different bony orbital decompression approaches, complication rate and its efficacy.