allowance

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allowance

 [ah-low´ans]
something permitted or allowed.
recommended daily allowance term popularly used as a synonym for recommended dietary allowance.
recommended dietary allowance (RDA) the amount of nutrient and calorie intake per day considered necessary for maintenance of good health, calculated for males and females of various ages and recommended by the Food and Nutrition Board of the National Research Council. See Appendices 4 and 5. Popularly called recommended daily allowance.

al·low·ance

(a'low-antz),
1. Permission.
2. An allotted portion.

allowance

The allocation of a thing on a routine basis.

al·low·ance

(a'low-ans)
1. Permission.
2. An allotted portion.

retinoscope 

An instrument for determining objectively the refractive state of the eye. It consists of a light source, a condensing lens and a mirror. The mirror is either semi-transparent or has a hole through which the retinoscopist can view the patient's eye along the retinoscope's beam of light. A patch of light is formed on the patient's retina and by moving that patch in a given direction and observing the direction in which it appears to move after refraction by the patient's eye, the retinoscopist can determine whether the patient's retina is focused in front of, at, or behind the retinoscope's sight hole. If the light reflected from the patient's fundus (called the retinoscopic reflex or light reflex) and observed in the patient's pupil through the retinoscope moves in the same direction as the movement of the mirror (this is referred to as a with movement), the eye is hyperopic. If the reflex moves in the opposite direction to that of the mirror (against movement), the eye is myopic. Sometimes it is impossible to see a clear movement one way or the other but only a bipartite reflex, showing opposite movements in the two sectors of the pupils (this is called a split reflex or a scissors movement). The refractive error is determined by placing lenses of various powers in front of the patient's eye until no movement is seen, i.e. the whole pupil is either illuminated or dark and the image of the patient's retina is then conjugate with the plane of the retinoscope's sight hole. When this phenomenon occurs the neutral point has been reached. The neutral point is measured for each principal meridian of the eye if it is astigmatic. To arrive at the patient's error of refraction the dioptric power corresponding to the distance between patient and retinoscope (called the working distance) is subtracted from the total lens power used to obtain neutralization. The amount of dioptric power subtracted is called the allowance. (Fig. R13) Syn. skiascope. See retinoscopic band; chromoretinoscopy; fundus reflex; velonoskiascopy.
spot retinoscope A retinoscope that projects a circular beam of light upon the patient's retina.
streak retinoscope A retinoscope that projects into the patient's eye an oblong streak, which can be adjusted in width and rotated in various meridians. It is more efficient than the spot retinoscope in determining astigmatism.
Fig. R13 Optical principle of a retinoscope (O, observers eye; P, patients eye; M, semi-silvered mirror)enlarge picture
Fig. R13 Optical principle of a retinoscope (O, observer's eye; P, patient's eye; M, semi-silvered mirror)
References in periodicals archive ?
A similar provision for enhancing salaries and allowances of chairman, deputy chairman, speaker and deputy speaker also exists in the law.
He explained that the different allowances included book allowance 'whose amount is discipline specific' and ranged between P 2 500 to P12 800 per student per academic year, stationary allowance amounting to P300 per academic year; attachment allowance amounting to P1 420 per month plus P20 per day for transport and P35.
The Punjab government has moved a summary to this effect to Chief Minister Shahbaz Sharif on the pretext that Khyber Pakhtunkhwa has early this month offered executive allowance to its PAS, PCS and PMS officers.
LAHORE -- Punjab government officers are still awaiting to get executive allowance unlike their counterparts in KP government who recently got the same commensurate to their workload.
But the national government insists the allowances were only meant for doctors employed by the Ministry of Health and the county governments.
He claimed that paramedical staff of Punjab, Khyber Pakhtunkhwa and Balochistan have already been receiving health and other allowances but Sindh government has reluctant to give allowances to the paramedics.
THE Audit Office has once again recommended to the foreign ministry to revise and reduce the "excessive" General Overseas Allowance (GOA) paid to ambassadors or chiefs of mission when serving abroad, that include an additional allowance for rent, housemaids and cars.
The taxpayer's PAYE code may indicate which allowance s/he is getting and the PAYE notice of coding, if s/he gets one, will show how her/his allowances have been worked out.
According to current report issued by Ministry of Food, dozens of officials are deputed in PARC and receives millions of rupees on account of research allowance.
The Pakistan government has notified a special increase in the pay, allowances and pension of its employees with effect from July 1, official sources said here.
The modified allowances approved by the Union Cabinet headed by Prime Minister Narendra Modi will increase the burden by Rs 1,448 crore to Rs 30,748 crore per annum.
New Delhi [India], June 29 ( ANI ): Hailing the announcement of increase in allowances by allowing recommendations of the Seventh Central Pay Commission (CPC) the Bharatiya Janata Party (BJP) on Thursday said that the new initiative will benefit lakhs of people.