Please tell me if the passage has any grammatical errors:
At present, the treatment options for DR are limited, invasive, expensive and most 
are focused on the advanced stages. And no available prevention treatment can be 
applied to prevent DR. As the microbiota-gut-retina axis contributes greatly to DR 
development, it is a promising target in prevention and treatment measures. 
Probiotics are live microorganisms, which are beneficial to the host if given in 
sufficient doses. for example, they improve the balance of gut microorganisms and 
stimulate the production of metabolites. Probiotics has became fashionable lately, 
because of their ability to improve human health and their preventive and curative 
effects on different diseases. At the same time, many studies suggest that probiotics are 
effective on the treatment of diabetes mellitus in animal models and human beings. 
However, studies on the effects of probiotics on DR are limited in the murine DR 
models, and relevant data in human beings are unavailable. Preclinical animal studies 
of giving probiotic feedings are being conducted in order to increase the possibility of 
using gut microbiota to treatment of DR (Table 4).
After administering the type 1 diabetes mice with Lactobacillus rhamnosus for 4 
months, weight and blood glucose levels decreased, and intraocular pressure also 
decreased[45]. NAME_1 et al.administered the recombinant angiotensin converting enzyme 
2 Lactobacillus paracasei to DR mice and found that the number of acellular capilla