Objectives: To demonstrate the visual improvement after skull base tumor surgery in Yemen; and to evaluate its relation with
different related parameters. Method: Data were obtained by retrospective chart review for a period of three years (1 January 2017
until 31 December 2019), in Al-Thawrah modern general hospital (TMGH) in Sana’a, Yemen. The data were analyzed using Statistical
Package for Social Sciences (SPSS). Significant results were indicated when the p-value was less than 0.05. Results: Fifteen patients
with visual deficit; ages [1-65 Years (mean=34 years ± 22 years)]; 8 males; 8 different surgical approaches of craniotomies were used
(but not endoscopic) for the management of 7 different brain space occupying lesions; 5(33.3%) showed postoperative visual
improvement only among Subfrontal approach (40%) and Pterional approach (75%), while 50.0% (1/2) for Suprasellar meningioma
after Subfrontal approach and Pterional approach. Five patients (33.3%) had post operative diabetes insipidus and 2 (13.3%) had CSF
leak. Visual improvement was directly proportional with the follow-up but inversely proportional with preparative duration.
Conclusion: The total post operative visual improvement was low (33.33%), but tends to be higher (50%) for suprasellar meningioma
after subfrontal approach or pterional approach. The shorter pre-operative duration and longer post operative follow-up, the betters
the visual improvement. Surgery by craniotomies but not by endoscopy was used.
Keywords: Skull base tumor surgery, Visual deficit, Visual improvement, Meningiomas, Retrobulbar tumour, 3rd ventricular colloid
cyst, Subfrontal approach, Pterional approach, CSF leak, Diabetes insipidus.