Arctos's technology is a potential way to treat inherited retinal dystrophies (IRDs) and other diseases that involve photoreceptor loss, such as age-related macular degeneration (AMD).

Existing gene therapy treatments aim to correct a specific gene, so only a small number of patients can benefit, Novartis said. The Arctos technology is not limited to a specific gene, and can potentially address many forms of IRDs, it said.

IRDs affect more than 2 million people globally and often result in complete blindness. AMD, meanwhile, affects an estimated 170 million people globally, Novartis said.

The acquisition underscores its commitment to using optogenetics-based therapies to restore vision to patients with advanced blindness, the company said.

"Optogenetics is emerging as a promising therapeutic approach that might restore sight to patients who are legally blind," Jay Bradner, president of the Novartis Institutes for BioMedical Research, said in a statement.

(Reporting by John Revill; Editing by Christopher Cushing and Devika Syamnath)