RESUMEN
Background: Visual function is a group of specific properties of eye which are essential for comprehensive vision of an individual. Pathological myopia is the condition of eye in which axial length of eye is more than 24mm and refractive error is more than -6 D
Objectives: To evaluate the visual functions in patients with high myopia and to find the most common finding of fundus in pathological myopia
Methodology: This was a descriptive cross sectional study which was conducted on seventy five subjects. Samples were selected by using non probability purposive sampling technique. Visual functions were assessed by using i.e visual acuity by Snellen chart, contrast sensitivity by lea numbers, visual field by confrontation method, color vision by D-15, glare by BAT [brightness acuity test], funds finding by indirect ophthalmoscope. Results: Study was conducted on 75 subjects [150] eyes. Best corrected visual acuity [BCV] was 6/6 to 6/9, 6/9 to 6/12 and 6/9 to 6/18 in myopes with -6.00DS to -8.00DS, - 8.00DS to - 10.00DS,-11.00DS and in -15.00DS respectively. Visual field in myopes from -6.00DS to -8.00DS was normal, it was constricted in myopes more than -9.00DS. Contrast sensitivity [CS] of Myopes having refractive error of -6.00DS to -8.0DS, - 9.00DS to -14.00DS and ? -14.00 DS had 1.25%, 1.25%-2.50% and 5% contrast respectively. 55 subjects having refractive errors from -6.00 DS to -12.00 DS had normal color vision for more than -12.00DS refractive errors. Color vision was defective in 45% subjects specially for blue color. Glare was present in 15 myopes with refractive error more than -14.00DS. The most common fundus findings in pathological myopes were myopic crescent, temporal tilting of optic disc and posterior staphyloma in severe pathological myopes. Conclusion: Visual functions were reduced in high degree of myopia. Myopic crescent, temporal displacement of disc and posterior staphyloma are most common fundus findings in pathological myopes