The phrase "weaker eyes" is correct and usable in written English.
It can be used to describe eyes that have less strength or clarity, often in the context of vision impairment or fatigue.
Example: "After staring at the computer screen for hours, I noticed my weaker eyes struggled to focus on the text."
Alternatives: "diminished eyesight" or "impaired vision."
Often in the treatment of strabismus, the preferred ("better-seeing") eye is patched for a period of time to encourage the child to use the "weaker" eye and thereby improve the weaker eye's vision.
Fortunately, this outcome is usually avoidable or reversible during early childhood by promptly correcting the underlying eye problem (removing the cataract or prescribing eyeglasses) or forcing the use of the weaker eye, often by carefully covering the stronger eye with a patch.
As a young girl I wore an eye patch to strengthen my weaker eye.
Such conditions are typically treated in youth by covering the stronger eye with an eyepatch to help the weaker eye catch up, but that approach doesn't work for everyone.
As Alice Truong reports on Quartz, Blaha was born with strabismus and experimented with an Oculus Rift virtual reality headset by sending different images to each eye in an effort to improve the vision of his weaker eye.
The first year male resembles the adult male, but has a dark bill and weaker eye ring, and its folded wing is brown, rather than black like the body plumage.
The mean BCVA of the weaker eye was 0.48 LogMAR (snellen 6/19+1) with a range of -0.18 to 1.0 LogMAR.
In these cases, the measured Arden ratio from the better eye is enhanced at the expense of that from the weaker eye, which can in fact appear to have an Arden ratio of less than 1.0, solely due to interaction.
The robustness of the startle-associated eye blink provides a reliable index of relative emotional valence such that a stronger eye blink indicates a more negative or unpleasant current inner state, whereas a weaker eye blink indicates a more positive or pleasant inner state [ 41]. Figure 1 illustrates the simple apparatus used to collect the SRM data streams.
