1. 70 patients with normal vision (NVG) with adequate literacy of written Greek language
2. 30 patients with low vision (LVG) with adequate literacy of written Greek language

These patients are tested on the printed Greek MNREAD

The same patients as those in the control group (NVG, LVG) are tested on the digital version of the Greek MNREAD (DeDART)

One randomly selected eye is included for each study participant. Participants respond to the near vision chart with defined environmental circumstances at 40cm viewing distance. All four parameters (RA, MRS, CPS and ACC) are evaluated.

The smallest print that the patient can read without making significant errors, and can be calculated by the following formula:

Acuity (in logMAR)= 1.4 - (sentences x 0.1) + (errors x 0.01).

The patient's reading speed when reading is not limited by print size , and is calculated by averaging the speed of the sentences with print size larger than the CPS. [(in words per minute (wpm)]

The smallest print size at which patients can read with their MRS, and is identified as the print size of the sentence fulfilling this criterion: all of the following sentences are read at a speed that is 1.96 times the standard deviation below the average of the larger preceding sentences (that is the MRS). In other words, it is defined as the smallest print size that yields 90% of the MRS [(in logMAR)]

The mean reading speed measured across the 10 largest print sizes (1.3 to 0.4 logMAR) of the MNREAD Acuity Chart at 40 cm normalized by 200 wpm, which was the mean value for a group of 365 normally sighted young adults aged 18 to 39 years old.

Level of agreement between the print and the digital version are evaluated by calculation of the ICCs for the 4 reading parameters (RA, MRS, CPS, ACC).