# Effects of wearing myopia glasses on eye movement and scleral blood supply

## TL;DR

Wearing myopia glasses reduces eye movement and may affect blood flow to the eye, potentially accelerating myopia.

## Contribution

This study shows that concave lenses limit eye movement and may impact scleral blood supply.

## Key findings

- Wearing -10.00 D glasses significantly reduced the range of eye movement compared to 0.00 D glasses.
- Restricted eye movement may affect vascular changes and blood flow to the eye's anterior segment and sclera.
- The findings suggest a potential link between wearing myopia glasses and accelerated myopia development.

## Abstract

The present study examined the effect of wearing myopia glasses on eye movement and scleral blood supply. For this purpose, a total of 30 individuals were recruited for the present self-control study. Under the same fixation distance, the individuals wore 0.00 D and -10.00 D glasses. The amount of eye movement generated when shifting from gazing at a central point to a point light source located at the left or right was measured and compared between the two glasses. The results revealed that the range of eye movement was significantly reduced after wearing -10.00 D glasses. When gazing at the right point light source from the central point, the difference between the rotation distances of the right eye when wearing the 0.00 D glasses and the -10.0 D glasses was 0.73±0.45 mm (t=8.93, P<0.01) and that of the left eye was 0.73±0.43 mm (t=9.34, P<0.01). Similar results were obtained when the left point light source was viewed from a shift in gaze from the central point. On the whole, the present study demonstrates that wearing concave lenses limits eyeball movement. Restricted eyeball movement can affect vascular changes within the extraocular muscles and blood flow, thereby affecting the blood supply to the anterior segment and sclera of the eye, potentially accelerating the development of myopia.