Is it permissible for a woman to uncover her eyes unnecessarily?
Question

                My question has to do with niqab. I read on your website and many Islamic websites that the niqab is fard (obligatory) and women must wear niqab, but they can leave their eyes uncovered so that they can see where they are going.

What concerns me is: is it obligatory for us to cover our eyes if I am not walking and there is no need to see where I am going?.
Praise be to Allah.
    Firstly: 

    What the woman must do is cover her face because of a great 
    deal of shar‘i evidence which indicates that it is obligatory for the woman 
    to cover her face in front of non-mahram men. And she has two ways in which 
    she can cover: 

    Either she may lower down on her face something that will 
    cover it completely and not let anything of it show, and she can see through 
    that cover

    or she may wear the niqab (face veil) which is that which 
    covers the face but leaves the eyes uncovered. 

    In Saheeh al-Bukhaari (1838) it says: “The woman in 
    ihram should not wear niqab or gloves.” The fact that the woman in ihram is 
    forbidden to wear niqab indicates that it is permissible to wear it when not 
    in ihram. 

    Hence the fuqaha’ and scholars said that it is permissible 
    for a woman to wear niqab, but that is on condition that she does not go to 
    extremes in uncovering the eye socket or show too much of the cheeks. 

    Imam al-Ramli ash-Shaafa‘i (may Allah have mercy on him) 
    said: 

    It is haraam to look at a woman in niqab of whom nothing can 
    be seen except her eyes, especially if she is beautiful. How much fitnah may 
    be caused by looking at a woman’s eyes. End quote from Nihaayat 
    al-Muhtaaj, 6/188 

    It says in Fataawa al-Lajnah ad-Daa’imah: With regard 
    to the niqaab: Abu ‘Ubayd said, describing the niqab according to the Arabs: 
    it is that from which the eye appears.  It was known by other names, 
    including “burqa‘”. As for the ruling on it, it is permissible. 

    The source for that is the hadeeth narrated from Ibn ‘Umar 
    (may Allah be pleased with him), according to which the Prophet (blessings 
    and peace of Allah be upon him) said: “The woman in ihram should not wear 
    niqab or gloves.” Narrated by al-Bukhaari. The fact that he (blessings and 
    peace of Allah be upon him) forbade the woman in ihram to wear niqab 
    indicates that it is permissible when not in ihram. End quote from 
    Fataawa al-Lajnah ad-Daa’imah (vol. 1, 17/171). 

    Shaykh ‘Abd al-‘Azeez ibn Baz, Shaykh ‘Abd ar-Razaaq ‘Afeefi, 
    Shaykh ‘Abdullah ibn Ghadyaan, Shaykh ‘Abdullah ibn Qa‘ood. 
This has been 
    stated previously in the following answers:
    1496,
    8540,
    21134 and
    100719 

    Secondly: 

    Once the above becomes clear, we will realise that there is 
    nothing wrong with a woman wearing a niqaab from which only her eyes appear 
    through a narrow opening which does not uncover anything more than what is 
    needed in order to see. The ruling that this is permissible is not dependent 
    upon there being any need; rather it is generally applicable and it is 
    permissible for her to wear the niqab whether the woman needs to see where 
    she is going or not, and whether she is sitting in a car or walking down the 
    street. The evidence quoted above which indicates that it is permissible to 
    wear the niqab was narrated in a hadeeth of the Prophet (blessings and peace 
    of Allah be upon him), and the tafseer of Ibn ‘Abbaas is general in 
    application and is not restricted to cases of necessity. 

    And Allah knows best.