Experimental Eye Research
Hyaluronic acid increased focusing movements in monkey eyes
Lens thickening during drug-triggered focusing increased by 0.24 millimeters compared with before injection, and the increased anatomical response lasted up to 16 months.Lens thickening during drug-triggered focusing increased by 0.24 millimeters compared with before injection, and the increased anatomical response lasted up to 16 months.

Animal studyHyaluronic acid
Who was studiedMonkeys with presbyopia, up to 16 months, against the same eyes before injection
What changedLens thickening during drug-triggered focusing increased by 0.24 millimeters compared with before injection
The catchEveryday near vision was not measured; focusing was experimentally triggered