Sentence examples for trial frame from inspiring English sources

Presenting distance visual acuity (VA) was measured at 4 and 1 m using a reduced logarithm of the minimum angle of resolution tumbling E chart and then with trial frame based on autorefraction.

The prescription providing best-corrected visual acuity at the test distance was placed into a trial frame, with the eye not being tested occluded.

To compute the performance score, we first measured the similarity (dot-product) of every test trial frame, with all expected population response vectors.

Myopia was induced by adding plus ophthalmic lenses of 1D, 2D, and 4D in a plastic trial frame for both eyes, and cortical responses were recorded for each condition in this order in all subjects.

Where prism treatment is being considered, obtain a prior measurement of the associated phoria, insert the prism to be prescribed into the trial frame and measure the associated phoria with the prism in situ.

Measurements were first made with habitual spectacle correction in place and were then repeated with +1 dioptre of optical defocus added to the participants' habitual correction using a trial frame.

The refraction measure recorded for each eye was mounted in the trial frames using trial lenses (rounded up or down to the nearest 0.25 diopters).

The vision task lasted for 7 min, and was performed four times: each time with different trial lenses mounted on trial frames.

If the corrected VA was less than 20/20 an objective refraction using a streak retinoscope, trial frames and lenses was performed by the same two ophthalmologists (SAS, EH).

In all cases, the abnormal results were explained by drooping eyelids, obstruction by spectacles or trial frames and subject error, which are common hazards of automated perimetry [ 32].

All participants wore trial frames with a refractive correction suitable for the viewing distance of 60 cm to ensure that any obstruction to the field of view caused by spectacle frames would be equivalent for everyone.