(1) It shall be the duty of the Director of Prisons to ensure that every prisoner-

(a) is regularly supplied with wholesome and nourishing food in quantities sufficient to maintain him in good health;

(b) is at all times kept supplied with clothing, soap, bedding and other necessaries in quantities sufficient to maintain his decency, cleanliness and good health;

(c) is at all reasonable times permitted access to washing and toilet facilities sufficient to keep himself clean and decent in his person;

(d) is permitted to take daily exercise outside his cell during the hours of daylight for a period not less than one hour in every day;

(e) is promptly supplied with all medicines, drugs, special diets or other things prescribed by a medical officer of health as necessary for the health of that prisoner.

(2) In calculating the quantities of food sufficient to maintain a prisoner in good health, regard shall be had to the nature of the work, if any, which he is required to perform, and to the condition of his health.

(3) No punishment shall be imposed on any prisoner which has the effect of-

(a) changing his diet;

(b) reducing the quantities of clothing, soap, bedding or other necessaries to be supplied to him;

(c) restricting or removing his access to washing or toilet facilities;

(d) restricting his daily exercise outside his cell to less than one hour in any day;

(e) preventing him from having access to such medicines, drugs, special diets and other things as may be prescribed by a medical officer of health as necessary for his health.

(4) No prisoner shall be deprived of, or restricted in his use of, dentures, hearing aids or spectacles in any circumstances.