Astringency of eyes with dark shadows may be caused by physiological and pathological factors: common physiological factors include vitreous clouding, etc. Pathological factors include retinal detachment and macular degeneration. 1. Physiological factors: when there is physiological vitreous clouding, it will cause the difference of vitreous refractive interstitial quality, and the patient may have astringent eyes with dark shadows. 2. Pathologic factors: common pathologic factors include retinal detachment and macular degeneration. Retinal detachment refers to the retina crack, vitreous body into the crack and lead to retinal detachment, the patient will have astringent eyes, dark shadow situation; macular degeneration will affect the patient’s visual effect, so that astringent eyes, dark shadow situation. If you have astringent eyes with dark shadows, you should have an eye examination under the guidance of an ophthalmologist to find out the specific cause and deal with it positively.